The graph of a linear equation contains the points (4,1) and (-2,-11). Which point also lies on the graph?
A. (1,1)
B.(1,-5)
C.(1,-2)
D.(1,-7)
Answer:
Option B is correct.
(1 , -5) lies on the graph.
Step-by-step explanation:
Given the points (4,1) and (-2 , -11)
First find the linear equation for the given points.
Equation of line for two points [tex](x_1, y_1)[/tex] and [tex](x_2, y_2)[/tex]
is given by: [tex]y-y_1 = (\frac{y_2-y_1}{x_2 - x_1}) (x-x_1)[/tex]
Substitute the given points (4,1) and (-2 , -11) in above equation to find the equation of line:
[tex]y-1=(\frac{-11-1}{-2-4})(x-4)[/tex]
or
[tex]y-1=(\frac{-12}{-6})(x-4)[/tex]
or
[tex]y-1=2(x-4)[/tex]
Using distributive property on RHS ( i.e, [tex]a\cdot (b+c) = a\cdot b+ a\cdot c[/tex] )
we have;
y -1 = 2x-8
Add 1 to both sides of an equation;
y-1+1 = 2x-8+1
Simplify:
y = 2x -7
Therefore, the equation of line for the given point is: y =2x - 7 ....[1]
To find which points lies on the graph ( i.e, Line)
Substituting the given options in equation [1] we have;
A . (1,1)
Put x =1 and y =1
[tex]1 = 2\cdot 1 -7 = 2-7[/tex]
1 = -5 which is not true.
Similarly
B. for (1, -5)
[tex]-5= 2\cdot 1 -7 = 2-7[/tex]
-5 = -5 which is true.
C. for (1, 2)
[tex]2= 2\cdot 1 -7 = 2-7[/tex]
2 = -5 which is not true.
And
D. For (1 , -7)
[tex]-7= 2\cdot 1 -7 = 2-7[/tex]
-7 = -5 which is also not true.
Therefore, the only point which lies on the line graph [1] is; (1 ,-5)
Collinear points are not necessarily coplanar.. true or false
The given statement is a false statement.
Step-by-step explanation:Collinear Points--
Two or more points are said to be collinear if they lie on a straight line.
Coplanar--
Set of points are said to be coplanar if they lie on the same plane.
If the set of points are collinear then we may get a line such that it will contain all these points and as we know that line always lie in a plane also there may be infinite number of planes which may contain the same line.
So, all the points on the line will also lie in the same plane.
Yes, collinear points are necessarily coplanar.
What is 5.75% of $6,000? (Express answer as dollars as cents.)
Answer:
The answers are:
345 dollars
34500 cents
Step-by-step explanation:
In order to determine the answers, we have to know about the percentage notation. For any "x" value that is expressed as x%, it is the same that:
x%=[tex]\frac{x}{100}[/tex]
So, first we determine the value in dollars and then we determine the value in cents, where:
1 dollar=100 cents
In dollars $:
=5.75%*$6000
=[tex]\frac{5.75}{100}[/tex]*$6000
=$345.00
In cents c:
=5.75%*6000*100
=[tex]\frac{5.75}{100}[/tex]*6000*100
=34500.00 cents
The figure shows the location of 3 points around a lake. The length of the lake, BC, is also shown. (Figure is not drawn to scale.) A picture of a right triangle ABC with right angle at B is shown. The length of the side AC is labeled as 9 miles. The length BC of the triangle is labeled as 6 miles. This length BC is also the length of an irregular gray shaded shape. Which of the following options is closest to the distance (in miles) between points A and B? 6.71 miles 7.35 miles 8.66 miles 10.82 miles.
Answer:
6^2 + x^2 = 9^2
36 + x^2 = 81
81-36= 45
square root of 45 is approximately 6.71 miles
Step-by-step explanation:
Using the theram theroy is very important to know the fulma and steps
A store is having a sale on jelly beans and trail mix. For 3 pounds of jelly beans and 2 pounds of trail mix, the total cost is $14. For 5 pounds of jelly beans and 6 bounds of trail mix, the total cost is $28. Find the cost for each pound of jelly beans and each pound for trail mix.
(-3,1) perpendicular to y=2/5x-4
Jessica deposits $2000 into an account that pays simple interest at a rate of 3% per year. How much interest will she be paid in the first 2 years?
Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule.
A(n) = 12 + (n – 1)(3)
A.12, 21, 39
B. 0, 9, 27
C. 12, 24, 42
D. 3, 24, 27
Kwamee created a coffee blend for his cafe by mixing Kona beans and Fuji beans.Kona beans cost $11 per pound and Fuji beans cost $7.50 per pound.He bought a total of 23 pounds of coffee beans and it cost $197. Write a system of equations that can be used to determine how many pounds of Kona and Fuji beans Kwamee bought.
determine whether the sequence converges or diverges. if it converges give the limit.
48, 12, 3, 3/4, ...
Final answer:
The provided sequence is a geometric sequence that converges to 0 because its common ratio's absolute value is less than 1.
Explanation:
The sequence provided is 48, 12, 3, 3/4, suggesting a pattern where each term is divided by 4 to get the next term (this is a common ratio r = 1/4). This type of sequence is known as a geometric sequence, and to determine if it converges, we can apply the ratio test.
In a geometric sequence, successive terms approach zero if |r| < 1. Since the absolute value of the common ratio here is less than 1, the terms of the sequence will get progressively smaller and approach zero. Therefore, we can conclude that this geometric sequence converges, and the limit is 0.
Thirty pounds of a salt-water solution contains fifteen percent salt. How much salt is in the water?
1.5 lb
3 lb
4.5 lb
(I came up with 2 answers and I need someone with the same answer, the two options that I came up with is 1.5 lb. or 4.5lb.
True or false the difference of two numbers is less than either of those two numbers
How many different pizzas can be ordered if the restaurant offers 15 different toppings and there is no limit to
the number of toppings on the pizza?
Final answer:
Using the formula for combinations with repetition, with 15 different toppings and no limit on the number of toppings per pizza, we find that there can be 32,768 different possible pizzas.
Explanation:
The question you're asking relates to combinations with repetition, a topic in combinatorics, a branch of mathematics. Given 15 different pizza toppings and the possibility of choosing any number of these toppings for a single pizza (including the possibility of a pizza with no toppings at all), we're essentially looking at how many different pizzas can be created.
To calculate the total number of different pizzas that can be ordered, we use the formula for combinations with repetition, which is (n+r-1)C(r), where 'n' is the number of toppings to choose from (15 in this case), 'r' is the number of toppings chosen, and 'C' represents the combination function. Since there's no limit to the number of toppings, 'r' can vary from 0 (a pizza with no toppings) to 15 (a pizza with all the toppings). However, because the question allows any number of toppings and we consider repetitions, the calculation simplifies to 2ⁿ, where n is the number of toppings.
Therefore, calculating this gives us 2¹⁵, which equals 32,768 different possible pizzas. This includes every combination from no toppings at all to a pizza with all 15 toppings.
What information can be used to compare linear relationships?
Sample Response:
Linear relationships can be compared using their initial values, or y-intercepts, and their rates of change, or slopes. Initial values can tell you which relationship started with a greater value. Comparing slopes can tell you which relationship is rising or falling faster.
How to solve and why the answer is (A)
A fantasy board game makes use of four dice. The first is a standard 6-faced die, the second die has 4 faces, and the other two have 10 faces each. If all the dice are thrown together and their combination dictates a certain outcome of the game, how many possible outcomes exist?
Answer:
2400
Step-by-step explanation:
Given : The first is a standard 6-faced die, the second die has 4 faces, and the other two have 10 faces each.
To Find: If all the dice are thrown together and their combination dictates a certain outcome of the game, how many possible outcomes exist?
Solution:
No. of faces of first die = 6
No. of faces of second die = 4
No. of faces of third die = 10
No. of faces of fourth die = 10
Now we are supposed to find the the number of possible outcomes exist.
So, Number of possible outcomes if all the dice are thrown together :
= [tex]6 \times 4 \times 10 \times 10[/tex]
=[tex]2400[/tex]
Hence there are 2400 possible outcomes if all the dice are thrown together and their combination dictates a certain outcome of the game.
What is the measure of (arc) BC?
A. 55
B. 110
C. 48
D. 96
Answer:
(D)[tex]96^{\circ}=(arc)BC[/tex]
Step-by-step explanation:
It is given from the figure that m∠BAC=48° and arcAC=110°.
The Inscribed Angle Theorem states that the measure of an inscribed angle is half the measure of its intercepted arc.
Now, using the above property, we have
[tex]m{\angle}BAC={\frac{1}{2}}(arc)BC[/tex]
Substituting the given values, we get
[tex]48^{\circ}=\frac{1}{2}(arc)BC[/tex]
[tex]96^{\circ}=(arc)BC[/tex]
Thus, the measure of the arc BC is 96 degrees.
Hence, option D is correct.
Suppose that some country had an adult population of about 50 million, a labor-force participation rate of 60 percent, and an unemployment rate of 5 percent. how many people were unemployed?
Based on the labor force participation rate, the number of unemployed people is 1.5 million people.
The unemployed rate is based on the labor force participation rate and not the adult population.
The labor force is 60% and in absolute value this is:
= 60% x 50 million people
= 30 million people
The unemployment rate is 5% of this:
= 5% x 30 million
= 1.5 million people
In conclusion, there are 1.5 million unemployed people
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Consider the system of linear equations.
7x+16y=-2
9x-4y=22
To use the linear combination method and addition to eliminate the y-terms, by which number should the second equation be multiplied?
A. -4
B. -1/4
C. 1/4
D. 4
To use the linear combination method and addition to eliminate the y-terms, the second equation should be multiplied by 4.
What is equation?An equation is like a relationship between two or more variables. It is expressed in equal to form. Equation of two variables looks like: ax+ by=c.
It is solved to find the value of variables.
How to solve equation?The given equations are 7x+16y= -2 and 9x-4y=22 and we have to solve using linear combination method.
First we have to change -4y to -16y because after we have to do addition so we will multiply the second equation by 4 which makes the equation as under:
36x-16y=88
Adding equation 1 and 2
7x+16y+36x-16y=-2+22
42x=20
x=20/42
x=10/21
Put the value of x in 7x+16y=-2
7(10/21)+16y=-2
10/3+16y=-2
16y=-2-10/3
16y=-16/3
y=-1/3
Hence to solve the equations we need to first multiply second equation by 4 which is option D.
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Which of the following represents the set of possible rational roots for the polynomial shown below 2x^3+5x^2-8x-20=0
The possible rational roots are given by the ratio of the constant term to the leading coefficient. That is [tex]\pm[/tex]1/1, [tex]\pm[/tex]1/2, [tex]\pm[/tex]1/5, [tex]\pm[/tex]1/10, [tex]\pm[/tex]1/20, and so on and this can be determined by using the arithmetic operations.
Given :
Polynomial Equation -- [tex]2x^3+5x^2-8x-20=0[/tex]
The following steps can be used in order to determine the rational roots of the given polynomial equation:
Step 1 - Write the given polynomial equation.
[tex]2x^3+5x^2-8x-20=0[/tex]
Step 2 - The coefficient of [tex]x^3[/tex] is 2. So the factors of 2 are [tex]\pm[/tex]1, [tex]\pm[/tex]2.
Step 3 - The constant term of the given polynomial is -20 and the factors of the constant term are [tex]\pm[/tex]1, [tex]\pm[/tex]2, [tex]\pm[/tex]5, [tex]\pm[/tex]10, [tex]\pm[/tex]20.
Step 4 - The rational roots are given by the ratio of the constant term to the leading coefficient. That is,
[tex]\pm[/tex]1/1, [tex]\pm[/tex]1/2, [tex]\pm[/tex]1/5, [tex]\pm[/tex]1/10, [tex]\pm[/tex]1/20, and so on.
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https://brainly.com/question/12254880
Two angles are supplementary one angle measure 12 more than the other find the measures
Determine whether the conjecture is true or false. Give a counterexample for any false conjecture. Given: ∠F ∠ F is supplementary to ∠G ∠ G and ∠G ∠ G is supplementary to ∠H ∠ H . Conjecture: ∠F ∠ F is supplementary to ∠H ∠ H .
How to factor:
x^3-216=0
WILL GIVE A BRAINLIEST!!
Find the range of the parent function below.
y=1/x
A.
all real numbers
B.
all real numbers except 0
C.
all positive numbers
D.
all negative numbers
LeRon draws an orange counter from one bag and a red counter from another bag. Which statement is true?
if y varies inversely as x, and y=20 as x=3, find y for the x value 4
The number of new cars purchased in a city can be modeled by the equation where C is the number of new cars and t is the number of years since 1958. C = 26t^2 + 168t + 4208. In what year will the number of new cars reach 15,000? a. 2026 b. 1993 c. 1970 d. 1976 Solve using the quadratic formula. HELP PLZ!
Final answer:
To determine when the number of new cars reaches 15,000, the quadratic equation 26t^2 + 168t + 4208 = 15,000 is solved for t and then added to 1958.
Explanation:
To find the year when the number of new cars reaches 15,000, we need to set the equation C = 26t^2 + 168t + 4208 equal to 15,000 and solve for t, where t is the number of years since 1958.
First, set up the equation: 15,000 = 26t^2 + 168t + 4208.
To solve for t, we subtract 15,000 from both sides to get the quadratic equation: 0 = 26t^2 + 168t - 10,792.
Next, we use the quadratic formula [tex]t = (-b \pm \sqrt{b^2 - 4ac}) / (2a)[/tex], where a = 26, b = 168, and c = -10,792.
Plugging the values into the quadratic formula, we get the two possible solutions for t. After calculating the roots, we discard any negative value as it would not make sense in the context of time since 1958. The positive year will give us the answer we need.
Adding the positive value of t to 1958, we obtain the year in which the number of new cars purchased will reach 15,000.
In a hospital ward, there are 12 nurses and 4 doctors. 3 of the nurses and 2 of the doctors are male. If a person is randomly selected from this group, what is the probability that the person is female or a doctor? @IMStuck @TheSaint905621 @Compassionate @phi @math&ing001 @acxbox22
Answer:
[tex]\bf \textbf{Probability that the person is female or a doctor = }\frac{13}{16}[/tex]
Step-by-step explanation:
Number of nurses in the hospital = 12
Number of doctors in the hospital = 4
Number of male nurses = 3
Number of male doctors = 2
Number of male persons = 5
So, Number of female persons = 16 - 5 = 11
Number of female doctors = 4 - 2 = 2
So, Probability that the person is female or a doctor = Probability that a person is female + Probability that a person is doctor - Probability that a person is female doctor
[tex]\implies\text{Probability that the person is female or a doctor = }\frac{11}{16}+\frac{4}{16}-\frac{2}{16}\\\\\implies\bf \textbf{Probability that the person is female or a doctor = }\frac{13}{16}[/tex]
George plans to cover his circular pool for the upcoming winter season. The pool has a diameter of 20 feet and extends 12 inches beyond the edge of the pool. A rope runs along the edge of the cover to secure it in place.
a.
What is the area of the pool cover?
b.
What is the length of the rope?
Answer:
Given the data, the pool has a diameter of 20 feet, so, R=10ft.
The pool cover expands 12 inches beyond the pool, so, 12in.= 1 foot
Therefore, the radius of the pool cover will then be: 10+1= 11ft.
ANSWER A (pool cover)) r² π = 11² π = 121 π ft²
A.)= 121 π ft²
ANSWER B (rope)) l = 2 r π = 2 · 11 π = 22 π ft.
B.)= 22 π ft
Step-by-step explanation:
I got a 100% on it on founders edtell