A recursive rule for an arithmetic sequence is a1=-2; an=an-1 -9
What is an explicit rule for this sequence?
Answers
The explicit rule for the given arithmetic sequence is an = -2 + (n - 1) * (-9)
Explanation:An arithmetic sequence is a sequence of numbers in which each term is found by adding a common difference to the previous term. In this case, the recursive rule for the arithmetic sequence is given as a1 = -2 and an = an-1 - 9.
To find the explicit rule for this sequence, we need to find a formula that directly calculates the nth term of the sequence. We can do this by examining the pattern in the sequence:
First term: a1 = -2Second term: a2 = a1 - 9 = -2 - 9 = -11Third term: a3 = a2 - 9 = -11 - 9 = -20Fourth term: a4 = a3 - 9 = -20 - 9 = -29...From the pattern, we can see that each term is obtained by subtracting 9 from the previous term. So, the explicit rule for this arithmetic sequence is given by:
an = a1 + (n - 1) * d
where a1 is the first term, n is the term number, and d is the common difference. Plugging in the values, we have:
an = -2 + (n - 1) * (-9)
Simplifying this equation gives the explicit rule for the sequence.
Final answer:
The explicit rule for the arithmetic sequence is an = -2 + (n-1)(-9).
Explanation:
An explicit rule for an arithmetic sequence is given by the formula:
an = a1 + (n-1)d
Where:
an is the nth term of the sequence
a1 is the first term of the sequence
n is the position of the term in the sequence
d is the common difference between consecutive terms
In this case, the first term (a1) is -2 and the common difference (d) is -9. Therefore, the explicit rule for this sequence is:
an = -2 + (n-1)(-9)
Related Questions
There were 27 balloons at the beginning of a party. By the end of the party, c of them had popped. Using c , write an expression for the number of balloons that were left.
Answers
Answer: 27-c =x
Step-by-step explanation:
We'll use c to represent the amount taken away (subtracted) and x to represent the amount left (the answer).
We begin with 27 balloon, and take away c amount to make x.
27-c =x
The number of balloons left after c balloons have popped from an initial number of 27 balloons can be represented by the mathematical expression 27 - c.
Explanation:In order to determine the number of balloons that were left after some of them had popped, we can use a simple mathematical expression. If there were initially 27 balloons and c balloons popped, then the number of balloons left would be the initial number of balloons minus the number popped.
Mathematically, this can be represented by the expression: 27 - c.
The variable c is used to represent the number of balloons that popped during the party. By subtracting this from the total number of balloons, we're left with the number of balloons that survived the party.
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What do you need to know?
Answers
Answer:
Math
Step-by-step explanation:
Answer:
D. 51%
Step-by-step explanation:
what is the name of the angle formed by the rays please show the work
Answers
Answer:
∠RQP
Step-by-step explanation:
or it may just be angle rqp and it's just me reading to much into it
Evaluate the expression: (–2)2 + (–42) + (18 – 23).
A. –19
B. 19
C. –17
D. 3
Answers
Answer:
The correct answer is for the given expression is -43.
Step-by-step explanation:
We are given the following expression and we are supposed to evaluate it:
[tex](-2)^2 + (-42) + (18 - 23)[/tex]
Solving the terms inside the brackets first, following the order of operations to solve a mathematical expression to get:
= 4 + (-42) + (-5)
Further adding and subtracting the terms to get:
= 4 - 42 - 5
= -38 - 5
= -43
Answer:
-17
Step-by-step explanation:
Evaluate the expression: (–2)^2 + (–4^2) + (18 – 23) = -17
Triangles △GJI and △PKH are similar, and m∠G+m∠P=50°, and m∠I=48°. What are the measures of all the angles of these triangles ?
Answers
If ΔGJI and ΔPKH are similar, then ∡G≅∡P, ∡J≅∡K and ∡I≅∡H.
We have m∡G + m∡P = 50°, therefore m∡G = m∡P = 50° : 2 = 25°.
m∡I = 48° therefore m∡H = 48°.
We know, the sum of the measures of the angles of a triangle is equal 180°.
Therefore we have the equation:
m∡G + m∡J + m∡I = 180°
25° + m∡J + 48° =180°
73° + m∡J = 180° subtract 73° from both sides
m∡J = 107° → m∡K = 107°.
Answer: ΔGJI and ΔPKH: 25°, 107°, 48°The measures of all the angles of these triangles are: [tex]\rm 25^\circ,\;48^\circ\;and \; 107^\circ[/tex] and this can be determined by using the properties of the triangle.
Given :
Triangles △GJI and △PKH are similar.m∠G + m∠P = 50°, and m∠I = 48°.Given that triangle GJI and triangle PKH are similar therefore:
[tex]\rm \angle G = \angle P[/tex]
[tex]\rm \angle J = \angle K[/tex]
[tex]\rm \angle I = \angle H[/tex]
The sum of the interior angles of the triangle is [tex]180^\circ[/tex].
[tex]\rm \angle G + \angle I + \angle J = 180^\circ[/tex]
[tex]\rm 25^\circ + 48^\circ + \angle J = 180^\circ[/tex]
[tex]\rm 73^\circ + \angle J = 180^\circ[/tex]
[tex]\rm \angle J = 107^\circ = \angle K[/tex]
The measures of all the angles of these triangles are: [tex]\rm 25^\circ,\;48^\circ\;and \; 107^\circ[/tex].
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In an arithmetic series t6 = −4, t10 = −12. Find S10.
Answers
Answer:
[tex]S_{10}[/tex] = - 30
Step-by-step explanation:
For a given arithmetic sequence the n th term formula is
[tex]t_{n}[/tex] = [tex]t_{1}[/tex] + (n - 1)d
where d is the common difference and [tex]t_{1}[/tex] the first term
We have to find d and [tex]t_{1}[/tex]
from the given information we can write 2 equations and solve for d and [tex]t_{1}[/tex]
[tex]t_{6}[/tex] = [tex]t_{1}[/tex] + 5d = - 4 → (1)
[tex]t_{10}[/tex] = [tex]t_{1}[/tex] + 9d = - 12 → (2)
subtract (1) from (2) term by term
4d = - 8 ⇒ d = - 2
substitute d = - 2 in (1)
[tex]t_{1}[/tex] - 10 = - 4 ⇒ [tex]t_{1}[/tex] = - 4 + 10 = 6
The sum to n terms of an arithmetic sequence is
[tex]S_{n}[/tex] = [tex]\frac{n}{2}[/tex][2[tex]t_{1}[/tex] + (n - 1)d ], hence
[tex]S_{10}[/tex] = 5[(2 × 6) + (9 × - 2) ] = 5(12 - 18) = 5 × - 6 = - 30
There are 3.79 L in every gallon how many liters of gas does a 13.6 gallon tank hold
Answers
Answer:
51.544 L in our tank
Step-by-step explanation:
We have a 13.6 gallon tank
Our conversion factor is 3.79 L = 1 gallon. We want liters on top since that is where we want to end up
3.79 L /1 gallon is what we want to use
13.6 * 3.79L/1 gallon = 51.544 L in our tank
Solve algebraically please URGENT
y=5x−7
−6x−4y=−24
Answers
[tex]\left\{\begin{array}{ccc}y=5x-7\\-6x-4y=-24&\text{divide both sides by (-2)}\end{array}\right\\\left\{\begin{array}{ccc}y=5x-7&(*)\\3x+2y=12&(**)\end{array}\right\\\\\text{substitute }\ (*)\ \text{to}\ (**):\\\\3x+2(5x-7)=12\qquad\text{use distributive property}\\\\3x+(2)(5x)+(2)(-7)=12\\\\3x+10x-14=12\qquad\text{add 14 to both sides}\\\\13x=26\qquad\text{divide oth sides by 13}\\\\\boxed{x=2}\\\\\text{Put the vaalue of x to}\ (*):\\\\y=5(2)-7\\\\y=10-7\\\\\boxed{y=3}\\\\Answer:\ \boxed{x=2\ and\ y=3\to(2,\ 3)}[/tex]
Drea and Sajini both worked at a local ice cream shop over the summer. Together, they earned a total of $425. Drea earned $25 more than Sajini. Write a system of two equations with two variables to model this problem. Use an algebraic method (substitution or linear combination) to solve the system. Graph both equations. Be sure to include the solution on your graph. How much did each person earn?
ps i can graph it myself i guess i just need the rest
Answers
Answer:
The money earned by Drea was [tex]\$225[/tex]
The money earned by Sajini was [tex]\$200[/tex]
Step-by-step explanation:
Let
x------> money earned by Drea
y------> money earned by Sajini
we know that
[tex]x+y=425[/tex] -----> equation A
[tex]x=y+25[/tex] ----> equation B
substitute equation B in equation A
[tex](y+25)+y=425[/tex]
solve for y
[tex]2y=425-25[/tex]
[tex]y=400/2=\$200[/tex]
Find the value of x
[tex]x=y+25[/tex] ----> [tex]x=200+25=\$225[/tex]
using a graphing tool
solve the system of equations
Remember that the solution of the system of equations is the intersection point both graphs
The intersection point is [tex](225,200)[/tex]
see the attached figure
Answer:
Drea: $225
Sajini: $200
Step-by-step explanation:
D + S = 425
D = S + 25
S + 25 + S = 425
2S = 400
S = 200
D = 200 + 25 = 225
how to factorised quadratics
in simple form thank you
Answers
Answer:
ax²+ bx + c = 0
Step-by-step explanation
Multiplying (x+4) and (x−1) together (called Expanding) gets x2 + 3x − 4 :
expand vs factor quadratic
So (x+4) and (x−1) are factors of x2 + 3x − 4
Just to be sure, let us check:
(x+4)(x−1) = x(x−1) + 4(x−1)
= x2 − x + 4x − 4
= x2 + 3x − 4 yes
Yes, (x+4) and (x−1) are definitely factors of x2 + 3x − 4
To factorise a quadratic equation, express it in the standard form ax² + bx + c = 0, identify coefficients a, b, and c, and then apply the quadratic formula.
To factorise quadratics in their simplest form, you need to express them in the standard quadratic form, which is ax² + bx + c = 0. For example, if you are given the equation x² + 4x - 21 = 0, you should identify a = 1, b = 4, and c = -21. Then you can apply the quadratic formula:
'x' equals minus ‘b’, plus-or-minus the square root of ‘b’ squared minus four ‘a’ ‘c’, all over two 'a' (x = [tex]\frac{-b \pm \sqrt{b^2- 4ac} }{2a}[/tex])
If you are given an equation like 3x +3 + x² + x = 24, first rearrange it into the standard quadratic form by combining like terms. Use the quadratic formula if you cannot factor the quadratic easily.
Keep in mind that the quadratic formula can only be used if the equation is a true quadratic with powers confined to the second, first, and zeroth (constant term). If other powers or roots are present, then alternative methods must be used.
A rectangular flowerbed at a city park has an area of 126 sou area meters the width of the flowerbed is 3 meters what is the perimeter of the flowerbed
Answers
Answer: The Perimeter is 90 meters
Step-by-step explanation:
Area = 126
Width = 3
Length = L
3 x L = 126
3 x L / 3 = 126/3
L = 42
Check:
3 x 42 = 126
126 = 126
Perimeter = L2 + W2
P = 42 x 2 + 3 x 2
P = 84 + 6
P = 90
Write Y=x^2+18x+90 In vertex form
Answers
Answer:
y = (x + 9)² + 9
Step-by-step explanation:
the equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
given a parabola in standard form : ax² + bx + c : a ≠ 0
the the x-coordinate of the vertex is
[tex]x_{vertex}[/tex] = - [tex]\frac{b}{2a}[/tex]
y = x² + 18x + 90 is in standard form
with a = 1, b= 18 and c = 90
[tex]x_{vertex}[/tex] = - [tex]\frac{18}{2}[/tex] = - 9
to find the corresponding y-coordinate substitute x = - 9 into the equation
y = (- 9)² + 18(- 9) + 90 = 81 - 162 + 90 = 9
⇒ y = (x + 9)² + 9 ← in vertex form
A problem states: "There are 9 more pencils than pens in a container. There are 25 writing utensils in the container in all. How many pens are there in the container?" Let p represent the number of pens. Which equation represents the situation?
Answers
Answer:
the answer is 16
Step-by-step explanation:
25-9=16 pens
Answer:25-9= 16 pens
Step-by-step explanation:
Find the sum of the geometrical equation -3 , 18 , -108 , if there are 7 terms
Answers
Hello from MrBillDoesMath!
Answer:
Sum = -119,962 ( I hope!)
Discussion:
Let's determine the pattern.
first term: -3
2nd term: (-3) * (-6) = 18 (multiply first term by -6)
3rd term: (18) * (-6) = -108 (multiply 2nd term by -6)
4th term : (-108)*(-6) = 648 ( etc)
5th term : (648)*(-6) = -3888 (etc)
6th term : (-3888)*(-6) = 23328 (etc)
7th term: (23328)*(-6) = -139967 (etc)
Sum = -119,962
A simpler way to do this is to use the formula for the sum of a geometric series to n terms. The series is
-3 Sum ( -6)^n n = 0, 1, 2, 3, 4, 5, 6
Regards,
MrB
P.S. I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!
Find the number if: 4% of it is 31% of 16.4
Answers
Answer:
The number (x) is 127.1
Step-by-step explanation:
4% of a number (x) is equal to;
31% of 16.4
i.e 0.04x = 5.084
x = [tex]\frac{5.084}{0.04}[/tex] = 127.1
The number (x) is 127.1
Answer:
x = 127.1
Step-by-step explanation:
Let x be the unknown number.
It is given that 4% of the number is 31% of 16.4
4% of x = 31% of 16.4
[tex]x\times \dfrac{4}{100}=16.4\times \dfrac{31}{100}[/tex]
[tex]\dfrac{4x}{100}=\dfrac{508.4}{100}[/tex]
Multiply both sides by 100.
[tex]\dfrac{4x}{100}\times 100=\dfrac{508.4}{100}\times 100[/tex]
[tex]4x=508.4[/tex]
Divide both sides by 4.
[tex]x=\dfrac{508.4}{4}[/tex]
[tex]x=127.1[/tex]
Therefore, the unknown number is 127.1.
Mindy opens a bank account with $55 and start saving five dollars per week. Sean’s grandma gives him $100 for his birthday, but he spends $10 every week. After how many weeks would they have the same amount of money, how much will that be?
Answers
Answer:
3 weeks, $45
Step-by-step explanation:
So we can make an equation!
55+5x=100-10x
So solving for x,
X=3
Final answer:
After solving the equations, Mindy and Sean will have the same amount of money, which is $70, after 3 weeks.
Explanation:
The question is about finding after how many weeks Mindy and Sean would have the same amount of money and how much that amount would be. Let's denote the number of weeks as w. For Mindy, who starts with $55 and saves $5 per week, her amount of money as a function of weeks is 55 + 5w. For Sean, who starts with $100 and spends $10 every week, his amount of money as a function of weeks is 100 - 10w.
To find out after how many weeks they would have the same amount of money, set the two expressions equal to each other:
55 + 5w = 100 - 10w
Add 10w to both sides and subtract 55 from both sides to solve for w:
15w = 45
Therefore, w = 45 / 15 = 3
To find out how much money they would have, substitute w = 3 into one of the original equations:
Mindy: 55 + 5(3) = 70
So, after 3 weeks, both Mindy and Sean will have $70
which has less water a swimming pool that is 5/10 full or a glass that is 9/10 full
Answers
Answer: A swimming pool that is 5/10 full.
A jar of 50 sour ball candies contains only 3 flavors. If there are 18 orange, 12 lemon, and 20 cherry sour balls, what is the probability that a randomly selected sour ball will be lemon or cherry? A. 3/125 B. 12/ 125 C. 16/25
Please show solution. Thanks in advance!
Answers
Option B. 12/ 125 is the answer.
Explanation
Total umber of sour ball candies = 50
Number of lemon candies = 12
Hence the probability to get a lemon candy is = 12/50
Number of cherry sour balls = 20
So, the probability to get a cherry sour ball = 20/50
So, to get the joint probability for a random selection to either get a lemon or cherry candy, we will multiply both the probabilities.
[tex]\frac{12}{50}*\frac{20}{50}[/tex]
= [tex]\frac{12}{125}[/tex]
What graph represents the system of linear inequalities? 4x+y>1 y≤32x+2
Answers
Answer:
The graph in the attached figure
Step-by-step explanation:
we have
[tex]4x+y>1[/tex] -----> inequality A
The solution of the inequality A is the shaded area above the dashed line
The equation of the dashed line is [tex]4x+y=1[/tex]
The slope of the dashed line is negative
The y-intercept of the dashed line is the point [tex](0,1)[/tex]
The x-intercept of the dashed line is the point [tex](0.25,0)[/tex]
[tex]y\leq \frac{3}{2}x+2[/tex] -----> inequality B
The solution of the inequality B is the shaded area below the solid line
The equation of the solid line is [tex]y=\frac{3}{2}x+2[/tex]
The slope of the solid line is positive
The y-intercept of the solid line is the point [tex](0,2)[/tex]
The x-intercept of the solid line is the point [tex](-1.33,0)[/tex]
using a graphing tool
The graph in the attached figure
a door frame is 80 inches tall and 36 inches wide, what is the length of diagonal of the door frame? round to the nearest 10th
Answers
To find the diagonal of a door frame, use the Pythagorean theorem. Substitute the door's height and width into the formula, then find the square root of the sum. Round your answer to the nearest tenth.
Explanation:To find the length of the diagonal of the door frame, we can use the Pythagorean theorem, which states that the square of the hypotenuse (the long side, or in this case, the diagonal) is equal to the sum of the squares of the other two sides (height and width of the door).
So, the formula becomes: Diagonal = √((Height)^2 + (Width)^2)
Substitute the given values of the height and width into the equation: Diagonal = √((80 inches)^2 + (36 inches)^2) = √(6400 + 1296) = √7696
The square root of 7696 is about 87.7 inches. So, the length of the diagonal of the door frame, rounded to the nearest tenth, is 87.7 inches.
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To calculate the length of the diagonal of the door frame, use the Pythagorean theorem by squaring the width and height, adding the squared values, and then taking the square root. The length of the diagonal is approximately 87.9 inches.
Explanation:To calculate the length of the diagonal of the door frame, we can use the Pythagorean theorem. The Pythagorean theorem states that in a right triangle, the square of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides. In this case, the width and the height of the door frame form the legs of the right triangle, and the diagonal is the hypotenuse. Using the Pythagorean theorem, we can calculate the length of the diagonal as follows:
Therefore, the length of the diagonal of the door frame is approximately 87.9 inches, rounded to the nearest 10th.
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Matthew jogged to his friend’s house 12 miles away and then got a ride back home. It took him 2 hours longer to jog there than ride back. His jogging rate was 25 mph slower than the rate when he was riding. What was his jogging rate?
Answers
Answer:
The jogging rate of Matthew is 5 mph.
Step-by-step explanation:
Let the jogging rate of Matthew be x mph.
It is given that his jogging rate was 25 mph slower than the rate when he was riding. So, the riding rate is (x+25) mph.
The distance between Matthew and his friend's house is 12 miles.
[tex]Speed=\frac{Distance}{Time}[/tex]
[tex]Time=\frac{Distance}{Speed}[/tex]
The time taken by Matthew in jogging is [tex]\frac{12}{x}[/tex] and the time taken by Matthew in riding is [tex]\frac{12}{x+25}[/tex].
It took him 2 hours longer to jog there than ride back.
[tex]\frac{12}{x}=\frac{12}{x+25}+2[/tex]
[tex]\frac{12}{x}-\frac{12}{x+25}=2[/tex]
[tex]\frac{12(x+25)-12x}{x(x+25)}=2[/tex]
[tex]12x+300-12x=2x(x+25)[/tex]
[tex]300=2x^2+50x[/tex]
[tex]0=2x^2+50x-300[/tex]
[tex]0=x^2+25x-150[/tex]
[tex]0=x^2+30x-5x-150[/tex]
[tex]0=(x+30)(x-5)[/tex]
Equate each factor equal to 0.
[tex]x=5,-30[/tex]
The speed cannot be negative, therefore the jogging rate of Matthew is 5 mph.
Answer:
the answer is D
Step-by-step explanation:
The cost of a car rental is twenty-five dollars a day plus ten cents a mile. What is the total cost, in dollars, if the car is rented for three days and driven a total of six hundred and sixty miles? A) 86 B) 91 C) 97 D) 141
Answers
Answer:
The total cost is D) $141
Step-by-step explanation:
To solve we can use the equation: [tex]y=25d+0.10m[/tex]
d= number of days m= number of miles
We know both of these values so we can plug them in and solve.
y= 25(3) + 0.10(660)
y= 75 + 66
y = 141
The product of two numbers is 48 and one of the numbers is 12 what is the other number
Answers
Answer:
4
Step-by-step explanation:
On Monday,it took Helen 3 hours to do a page of science homework exercises.The next day she did the same number of exercises in 2 hours. If her average rate on Monday was p exercises per hour what was her average rate the next day .In terms of p?
Answers
Answer:
It's 3/2p!
Step-by-step explanation:
Because Helen do the same number of exercises on 2 days, the time to do and the average rate are inversely proportional!
So, if on Monday, Helen's average rate is p then on the next day, her average rate is:
p × 3 ÷ 2 = [tex]\frac{3p}{2}[/tex]
=3/2p
Brainliest?
Which inequality is represented by the number line graph?
A) x > -6
B) x < -6
C) x ≥ -6
D) x ≤ -6
Answers
The correct answer is option (D).
What is inequality?Inequality shows relation between two expression which are not equal to each others.
The graph shows an open circle at -6,
which implies that -6 is not a solution to the inequality.
The shaded arrow on all values shows that values are smaller than -6 and x < -6 is the inequality that represented on the line graph.
The required inequality is x < -6.
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Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers. Find the area of a regular hexagon with the given measurement. 48-inch perimeter A = sq. in.
Answers
Answer:
Step-by-step explanation:
It is given that the perimeter of the regular hexagon is 48 inch. Thus,
Perimeter of the regular hexagon = 48
⇒[tex]Sum of all the sides=48[/tex]
⇒[tex]6x=48[/tex]
⇒[tex]x=8inch[/tex]
Thus, the side of the regular hexagon is 8 inch.
Now, [tex]area of the regular hexagon=\frac{3\sqrt{3}}{2}(x)^2[/tex]
⇒[tex]A=\frac{3\sqrt{3}}{2}(8)^2[/tex]
⇒[tex]A=\frac{3\sqrt{3}}{2}(64)[/tex]
⇒[tex]A=96\sqrt{3}[/tex]
⇒[tex]A=166.03 sq inches[/tex]
Thus, the area of the regular hexagon is 166.03 sq inches.
The area of the regular hexagon that's given will be 166.03 inches².
How to calculate the area of the hexagonFrom the information, it was stated that the regular hexagon has a perimeter of 48 inches.
Therefore, the length of each side will be:
= 48/6
= 8 inches
The area of a regular hexagon calculated as:
= 3✓3/2 × x²
= 3✓3/2 × 8²
= 96✓3
= 166.03
In conclusion, the area is 166.03 inches².
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I need help with #7 ?!!!
Btw #6 is correct
Answers
Choice C for problem 6 is correct. The two angles (65 and 25) add to 90 degrees, proving they are complementary angles.
===========================================
The answer to problem 7 is also choice C and here's why
To find the midpoint, we add up the x coordinates and divide by 2. The two points A(-5,3) and B(3,3) have x coordinates of -5 and 3 respectively. They add to -5+3 = -2 which cuts in half to get -1. This means C has to be the answer as it's the only choice with x = -1 as an x coordinate.
Let's keep going to find the y coordinate of the midpoint. The points A(-5,3) and B(3,3) have y coordinates of y = 3 and y = 3, they add to 3+3 = 6 which cuts in half to get 3. The midpoint has the same y coordinate as the other two points
So that is why the midpoint is (-1,3)
What is the diameter of a circle that has a circumference of 56.52 feet? Round your answere to the nearest whole number
Answers
Diameter = 2 * radius
Circumference = pi * diameter
56.52 = pi * diameter
56.52/pi = (pi * diameter)/pi
18 = diameter
Answer:
18 = diameter
Step-by-step explanation:
Sam drives his car at a constant speed. He travels a distance (d) of 15 miles with 12 of a gallon of gas (g). Write an equation in the form of d=rg that represents the relationship between distance (d) and the number of gallons of gas (g), where r is the constant of proportionality.
Answers
Answer:
[tex]d =30g[/tex]
Step-by-step explanation:
Sam drives his car at a constant speed. He travels a distance (d) of 15 miles with 1/2 of a gallon of gas (g)
Distance d= 15
Gallons of gas (g)= 1/2
Equation is d= rg
Now plug in the values
15 = r* 1/2
Now we divide by 1/2 on both sides
[tex]r=\frac{15}{\frac{1}{2}}=15 * \frac{2}{1}= 30[/tex]
r=30
Now we replace the value of 'r' in the equation d=rg
[tex]d = 30g[/tex]
An airplane can ascend at a rate of 52 1/2 meters in 2/3 of a second how many meters can the airplane ascend in one second.
A. 34 1/3
B. 39
C. 51 1/2
D. 77 1/4