Answer: C
Step-by-step explanation:
A rectangle has 90° angles. So, the diagonal cuts the rectangle into two right triangles where the length (base) and the width (side) are the legs of the right triangle and the diagonal is the hypotenuse. Thus, the Pythagorean Theorem can be used: (leg a)² + (leg b)² = (hypotenuse)²
14² + 6² = hypotenuse²
196 + 36 = hypotenuse²
232 = hypotenuse²
√232 = √hypotenuse²
15.23 = hypotenuse
A students cost for last semester at her community college was 2300 dollars. She spent 368 dollars of that on books. What percent of last semester college costs was spent on books
Answer:
16%
Step-by-step explanation:
To find this, we have to divide the amount spent on books by the total amount, then multiply by 100:
[tex]\frac{368}{2300} * 100 = 16[/tex]
So 16% was spent on books!
16% of last semester college costs was spent on books.
Explanation:To find the percent of last semester college costs spent on books, we need to divide the amount of money spent on books by the total cost of last semester and multiply by 100 to get a percentage.
Amount spent on books: $368
Total cost of last semester: $2300
Percentage spent on books: 368/2300 * 100 = 16%
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Before she rides her bike, Saima warms up for 12 minutes. On Tuesday, Saima rode her bike for 52 miles. If it takes Saima 6 minutes to ride each mile, how long did it take for Saima to warm up and ride her bike on Tuesday?
Answer:
324 minutes or 5 hours 24 minutes
Step-by-step explanation:
On Tuesday, Saima rode her bike for 52 miles. If it takes Saima 6 minutes to ride each mile, then it takes her
[tex]52\cdot 6=312[/tex]
minutes to ride all 52 miles.
Before she rides her bike, Saima warms up for 12 minutes.
Therefore, it takes Saima
[tex]12+312=324[/tex]
minutes to warm up and ride her bike on Tuesday.
Step-by-step explanation:
On Tuesday, Saima rode her bike for 52 miles. If it takes Saima 6 minutes to ride each mile, then it takes her
minutes to ride all 52 miles.
Before she rides her bike, Saima warms up for 12 minutes.
Therefore, it takes Saima
minutes to warm up and ride her bike on Tuesday.
50 points if you can help me !
A student says that the function
f(x)-=(1/0.5)^x is an exponential decay function. Explain the students error
Answer:
The base is greater than 1, making it an exponential growth function.
Step-by-step explanation:
The student's mistake is that an exponential decay function can only have the base as less than 1, but because 1/0.5 = 2, it's an exponential growth function.
Answer:
Step-by-step explanation:
f(x)=(1/0.5)^x
Lets simplify what is in the parentheses
1 / .5 = 2
f(x)=(2)^x
Since 2 > 1
This function grows
How many real roots does [tex]x^4-x^3-9x^2+7x+14=0[/tex] have?
A) 1
B) 2
C) 3
D) 4
Answer: D) 4
Step-by-step explanation:
x⁴ - x³ - 9x² + 7x + 14 = 0
possible rational roots are: ±{1, 2, 7, 14}
Try x = -1
-1 | 1 -1 -9 7 14
| ↓ -1 2 7 -14
1 -2 -7 14 0 ← remainder is 0 so x = -1 is a root
Let's try x = 2 with the factored polynomial
2 | 1 -2 -7 14
| ↓ 2 0 -14
1 0 -7 0 ← remainder is 0 so x = 2 is a root
Factored polynomial x² - 7 can be factored to:
(x - √7) (x + √7)
⇒ x = √7 and x = -√7
The roots are x = {-1, 2, √7, -√7) which are all real numbers.
Use the diagram and the Pythagorean Theorem to find the EXACT area of square ABCD
A) 23
B) 24
C) 25
D) 26
Find the value of x.
3
2
12
6
Answer:
x=3
Step-by-step explanation:
Since this is an isosceles trapezoid
The angles at the top have to equal each other
112 = 30x + 11y
The sides also have to equal each other.
12 = 2x+3y
Divide each side by 3
12/3 = 2x/3 + 3y/3
4 = 2/3 x +y
Subtract 2/3 x from each side
4 -2/3 x =y
Substitute this into the first equation
112 = 30x + 11y
112 = 30x +11(4-2/3x)
112 = 30x +44 -22/3 x
Subtract 44 from each side
112-44 = 30x +44-44 -22/3 x
68 = 30x -22/3 x
Get a common denominator on the right of 3
68 = 90/3x -22/3 x
68 = 68/3 x
Multiply each side by 3/68
68 * 3/68 = 68/3 * 3/68 x
3 =x
The population of a town increased by 15% in 2016, and decreased by 5% in 2017. If the population of the town was 60,000 in the beginning of 2016, then what was it at the end of 2017?
Answer:
The population of the town at the end of 2017 was 65,550.
Step-by-step explanation:
The population of the town was 60,000 in the beginning of 2016.
In 2016, the total population is increased by 15%.
[tex]60,000\times\frac{15}{100}=9000[/tex]
Therefore the population is increased by 9000 and the population of the town at the end of 2016 was
[tex]60,000+9000=69,000[/tex]
In 2017, the total population is decreased by 5%.
[tex]69,000\times\frac{5}{100}=3450[/tex]
Therefore the population is decreased by 3450 and the population of the town at the end of 2017 was
[tex]69,000-3450=65,500[/tex]
Therefore the population of the town at the end of 2017 was 65,550.
16. Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.
y= -1/4 x + 8
-2x + 8y = 4
Answer:
Given equation are:
[tex]y = -\frac{1}{4}x+8[/tex] ......[1]
[tex]-2x+8y = 4[/tex] .....[2]
The two lines are parallel lines then their slopes will be equal.When two lines are perpendicular then, the slope of lines are the negative reciprocals of each other.Now, Equation of a line is in the form of y =mx+b where m is the slope of the line.
Slope[tex](m_1)[/tex] of equation of line in [1] is;
[tex]y = -\frac{1}{4}x+8[/tex]
then;
[tex]m_1= -\frac{1}{4}[/tex]
Slope[tex](m_2)[/tex] of equation of line in [2];
[tex]-2x+8y = 4[/tex]
Add both sides 2x we get;
-2x + 8y + 2x = 2x + 4
Simplify:
8y = 2x +4
Divide both sides by 8 we get;
[tex]y = \frac{1}{4} x + \frac{1}{2}[/tex]
then;
[tex]m_2 = \frac{1}{4}[/tex]
Therefore, the given two lines are neither parallel nor perpendicular.
Your keys drop from the top of the tower and fall straight to the ground. You want to know how far from the base of the keys landed. Draw a right triangle that will help you solve the problem. Label each triangle with the information you know
Answer:
Δ ABC is the required triangle.
Step-by-step explanation:
Since the person is standing at the top of tower.
let the height of tower be 'h' and 'b' be the distance from base of tower to the point where keys are dropped.
Consider, ABC be the right angled triangle with AB be the tower and A be the point where person is standing and C denotes the point where keys dropped finally.
Alpha (α) be the angle at which keys is dropped.
BC denotes the distance from foot of tower to the keys.
If you apply the changes below to the absolute value parent function, f(x) = |x|, what is the equation of the new function?Shift 4 units left.Shift 2 units up
A.g(x)=|x-4|+2
B.g(x)=|x+2|+4
C.g(x)=|x+4|+2
D.g(x)=|x+2|-4
Got the answer its C.
Answer: C
Step-by-step explanation:
The general form of the equation is: g(x) = a|x - h| + k ;
"a" represents the vertical stretch (or shrink)"h" represents the x-coordinate of the vertex (left and right)"k" represents the y-coordinate of the vertex (up and down)4 units left means h = 4
2 units up means k = 2
--> g(x) = |x - 4| + 2
Option: C is the correct answer.
C. [tex]g(x)=|x+4|+2[/tex]
Step-by-step explanation:The parent function f(x) is given by:
[tex]f(x)=|x|[/tex]
Now, we know that for any parent function f(x) the transformation of the type:
f(x) → f(x+k)
is a translation of the function f(x) k units to the right if k<0
and k units to the left if k<0
and the transformation of the type:
f(x) → f(x)+k
is a translation of a function f(x) k units upward if k>0
and k units downward if k<0
Now here it is given that:
The function f(x) is shifted 4 units left and 2 units up.
Hence, the transformed function g(x) is given by:
[tex]g(x)=f(x+4)+2\\\\i.e.\\\\g(x)=|x+4|+2[/tex]
Jim drank 2/5 of his water bottle and John drank 3/10 of his water bottle. How much did the both boys drink?
Jim and John drank a combined total of 7/10 of their water bottles, with Jim drinking 2/5 (converted to 4/10 for the common denominator) and John drinking 3/10.
To determine how much water Jim and John drank from their water bottles, we can add the fractions of the water they each drank. Jim drank 2/5 of his water bottle, while John drank 3/10 of his. To add these fractions, we need a common denominator, which in this case is 10. Convert 2/5 to 4/10 by multiplying the numerator and denominator by 2. Now, we can add 4/10 (Jim's consumption) and 3/10 (John's consumption) together.
The total amount of water drank by both boys is: 4/10 + 3/10 = 7/10
Thus, together, Jim and John drank 7/10 of their water bottles combined.
Triangles TAM is congruent to triangle HAM using the ASA postulate. Which two sides are congruent?
Answer:
[tex]\overline{AM}\cong \overline{AM}[/tex]
Step-by-step explanation:
Given that triangle TAM is congruent to the triangle HAM.
We know that corresponding sides of congruent triangles are equal so we can write:
TA = HA
AM = AM
TM = HM
comparing these with given choices we see that, (AM = AM) is the only matching answer.
Hence final answers is the first choice [tex]\overline{AM}\cong \overline{AM}[/tex].
please help ill give brainliest
Answer:
[tex]m=\frac{-10}{4}[/tex], [tex]\frac{-5}{4}=m+\frac{-15}{4}[/tex] and [tex]m+2=-0.5[/tex]
Step-by-step explanation:
We solve for m in the equation to find the value.
[tex]\frac{3}{4}+m=\frac{-7}{4} \\\frac{3}{4}-\frac{3}{4}+m=\frac{-7}{4}-\frac{3}{4}\\m=\frac{-10}{4}[/tex]
We now look for expressions which are [tex]m=\frac{-10}{4}=-2.5[/tex] or whose expressions solve to the same.
The following are equivalent [tex]m=\frac{-10}{4}[/tex], [tex]\frac{-5}{4}=m+\frac{-15}{4}[/tex] and [tex]m+2=-0.5[/tex].
Andrei's grandfather offered to give him a gift at 50% of the amount of money he saved in one year. Andrei saved $120 dollars. How much did his grandfather give him as a gift?
Answer:
$60
Step-by-step explanation:
$120/2(half) = $60
Answer: The amount given by his grandfather to him = $60.
Step-by-step explanation:
Given : Andrei's grandfather offered to give him a gift at 50% of the amount of money he saved in one year.
The amount saved by Andrei = $ 120
Then, the amount given by his grandfather to him will be
50% of ( amount saved by Andrei )
= (0.50) x ($120) [When we convert a percent into decimal we divide it by 100]
= $60
Therefore , the amount given by his grandfather to him = $60.
helpppppppppppppppp pleaseeeeeeeeeeee
Answer:
48, 11, and 90 from top to bottom
Step-by-step explanation:
Hi! You again!
so for every adult, there are 6 children
8+8+8+8+8, or 8x6, is 48
15+15+15+15+15+15, or 15x6 is 90
and the middle is where it's a bit tricky, since we have to divide instead of multiply.
we're trying to find out what times 6 is 66.
11+11+11+11+11+11 is 66.
Answer:
8-48
11-66
15-90
Step-by-step explanation:
make a table start from 1 and work your way down.
Without rotating the letters 360 degrees which letters do not exhibit rotational symmetry for any amount of rotation?
How do i even do this ? plz help smarties
x = number of messages sent or received
y = total cost per month
Plan A costs $30 per month plus $0.10 per text message. So the cost for plan A is y = 0.10*x + 30. The portion 0.10*x represents just the cost of the 10 cents per message, and then we add on the fixed cost of $30 to get the total cost.
In a similar fashion, plan B's cost is y = 60. There is no cost per message, so we don't have to include x in the picture. The cost is a flat fee, which leads to a flat horizontal line graph (as shown in the attachment below)
Our two equations are: y = 0.10x+30 and y = 60. Let's use substitution to find x
y = 0.10x + 30
60 = 0.10x + 30 ... replace y with 60 (works because y = 60)
60-30 = 0.10x
30 = 0.10x
0.10x = 30
x = 30/0.10
x = 300
If you send or receive 300 messages, then both plans will cost the same. We can see this on the graph below where the two lines cross at (300,60). Note how plugging x = 300 into the first equation simplifies to y = 60.
Jerome has 1/4 of thw group's video games at his house. Mario has 2/5 of the group's video games at his house. What fraction of the group's video games is either at jeromes house or marios house
Answer:
[tex]\frac{13}{20}[/tex] of the group's video games is either at Jeromes house or Marios house.
Step-by-step explanation:
Given the statement: Jerome has 1/4 of the group's video games at his house.
Also,Mario has 2/5 of the group's video games at his house.
⇒ Jerome has group's video games at his house(J) = [tex]\frac{1}{4}[/tex]
and
Mario has group's video games at his house(M) = [tex]\frac{2}{5}[/tex]
To find the fraction of the group's video games is either at Jerome house or Mario house.
Between two they have = [tex]J+M[/tex] = [tex]\frac{1}{4} + \frac{2}{5} = \frac{5+8}{20} =\frac{13}{20}[/tex] of the group's video games.
What is the value of the discriminant, b^2-4ac, for the quadratic equation 0=-2x^2-3x+8, and what does it mean about the number of real solutions the equation has?
Answer:
Value of D=73
D is positive that means the roots are real and distinct.
Step-by-step explanation:
We have been given a quadratic equation:
[tex]2x^2-3x+8[/tex]
We have to find its dicsriminant which is [tex]D=b^2-4ac[/tex]
Here, a=-2 , b=-3 and c=8 on comparing with the general equation [tex]ax^2+bx+c=0[/tex]
On substituting the values in the formula of discriminant we get:
[tex]D=(-3)^2-4(-2)(8)[/tex]
[tex]\Rightarrow D=9+64=73[/tex]
Value of D=73
If D is positive that means the roots are real and distinct.
A spinner is divided into 3 sections: red, blue, and green. Belinda spins the spinner 10 times. The spinner lands on red 2 times. What is the experimental probability that the spinner lands on red?
Answer:
The experimental probability of red is 20%.
Step-by-step explanation:
When calculating out the experimental probability, you ignore the actual probability of the action taking place. In this case, you only look to what actually did take place. In this case it was 2 out of 10 times, so we complete that math.
2/10 = 20%
Answer:
The experimental probability of it landing on red is 2/10 or 1/5
Step-by-step explanation:
engenuity 2020
The sum of 1/2 and four times a number is equal to 5/6 subtracted from five times the number. Find the number.
An equation is formed of two equal expressions. The number is 4/3.
What is an equation?An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
Let the unknown number be represented by x.
The given phrase can be written in the form of an expression "The sum of 1/2 and four times a number is equal to 5/6 subtracted from five times the number" as,
The sum of 1/2 and four times a number → (1/2) + 4x5/6 subtracted from five times the number → 5x - (5/6)Now, we can write the equation by equating the expressions together and then solving it for x,
(1/2) + 4x = 5x - (5/6)
(1/2) + (5/6) = 5x - 4x
x = (1/2) + (5/6)
x = (3/6) + (5/6)
x = 8/6
x = 4/3
Hence, the number is 4/3.
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A geometric sequence is shown below.
2, – 6, 18, – 54, 162, ...
Part A:
Write a recursive relationship for this sequence. Explain how you determined your answer.
Part B:
Write an explicit formula for this sequence.
[tex]a_1=2;\ a_2=-6;\ a_3=18;\ a_4=-54;\ a_5=162;\ ...[/tex]
-----------------------------------------------------
A recursive rule for a geometric sequence:
[tex]a_1\\\\a_n=r\cdot a_{n-1}[/tex]
[tex]r=\dfrac{a_{n+1}}{a_n}\to r=\dfrac{a_2}{a_1}=\dfrac{a_3}{a_2}=\dfrac{a_4}{a_3}=...\\\\r=\dfrac{-6}{2}=-3[/tex]
Therefore [tex]\boxed{a_1=2;\qquad a_n=-3a_{n-1}}[/tex]
-----------------------------------------------------
The exciplit rule:
[tex]a_n=a_1r^{n-1}[/tex]
Substitute:
[tex]a_n=2(-3)^{n-1}=2(3)^n(3)^{-1}=2(3)^n\left(\dfrac{1}{3}\right)\\\\\boxed{a_n=\dfrac{2}{3}\left(-3)^n}[/tex]
Please help! Will mark brainliest!
Jason has 15 birdhouses to sell at a craft fair. Which inequality represents the number of birdhouses, b, he can sell at the craft fair?
b≤15
b<15
b≥15
b>15
Answer:
b≤15
Step-by-step explanation:
If he only has 15 birdhouses in stock, then he can only sell 15 or less birdhouses. He cant sell more birdhouses, simply because he doesnt have more than 15.
Final answer:
The inequality representing the number of birdhouses Jason can sell, given he has 15, is b≤15 since he cannot sell more than he has.
Explanation:
The inequality that represents the number of birdhouses, b, Jason can sell at a craft fair, given he has 15 birdhouses, is b≤15. This is because the number of birdhouses he can sell cannot exceed the number he has, which is 15. The inequality b≤15 means that Jason can sell no more than 15 birdhouses, he could sell exactly 15, or he could sell less, depending on the demand at the craft fair.
This constraint ensures that Jason operates within the bounds of his available stock, preventing him from overselling. It implies that Jason can sell up to 15 birdhouses, including the possibility of selling exactly 15 or selling fewer, depending on the demand at the craft fair. This inequality serves as a practical guideline for Jason to manage his sales effectively, aligning his offerings with the limitations of his inventory.
In ΔABC, AD and BE are the angle bisectors of ∠A and ∠B and DE ║ AB . Find the measures of the angles of ΔABC, if m∠ADE: m∠ADB = 2:9.
Answer: ∠ A = ∠B= 48° and ∠ C = 84°
Step-by-step explanation:
Here, m∠ADE: m∠ADB = 2:9
Let m∠ADE = 2x and m∠ADB = 9x
Where x is any value.
By joining the points D and E (construction)
Since, Here DE ║ AB.
⇒ ∠DAB = 2 x
⇒ ∠ A = 4x ( because AD is the angle bisector so, ∠DAB=∠DAE = 2x )
Now, Let O is the intersection point of angle bisectors AD and BE.
Then, By the property of angle bisctor.
O is the circumcenter of the triangle ABC.
Therefore, OA = OB
⇒ ∠DAB = ∠EBA = 2 x
But BE is the angle bisceor,
Therefore, ∠EBA = ∠EBC=2 x
But, ∠B = ∠EBA + ∠EBC
⇒ ∠B = 4x
Now, since BD is the same transversal on the parallel lines AB and ED,
⇒ ∠B = ∠ EDC
⇒ ∠ EDC = 4x
Since, ∠ADB + ∠ADE + ∠EDC = 180°
⇒ 9x + 2x + 4x = 180°
⇒ 15x = 180°
⇒ x = 12°
Thus, the measures of the angles of ΔABC are,
∠ A = 4x =4×12 = 48°
∠ B = 4x =4×12= 48°
⇒ ∠ C = 180° - 48°- 48°= 84°
The question is about finding the angles of a triangle given certain conditions. We use the Angle Bisector Theorem and other geometric principles related to angle bisectors. We set up an equation based on these principles and solve for the angles.
Explanation:The given scenario is about triangle ABC, with AD and BE acting as angle bisectors of ∠A and ∠B respectively. Also, provided is the ratio of m∠ADE to m∠ADB, which is 2/9. Given these conditions, we are to find the measures of the angles of ΔABC.
First, we can make use of the Angle Bisector Theorem, which states that an angle bisector of an angle of a triangle divides the opposite side in a ratio equal to the ratio of the other two sides. From this theorem, we see that m∠ADE / m∠ADB = AD / DB.
We know from the given that m∠ADE/m∠ADB = 2/9.
Since DE is parallel to AB, angle ∠ADE is equal to angle ∠BAC and angle ∠ADB is equal to angle ∠ABC by the corresponding angles postulate.
As ∠ADE and ∠ADB are part of a straight angle ∠ADA, then ∠ABC + ∠BAC = 180° - ∠ADB. We can use these relationships to create an equation, solve for the angles, and find the measures of the angles of ΔABC.
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10 POINTS AND BRAINLIEST
URGENT MATH QUESTION SEE PICTURE
The point-slope form:
[tex]y-y_1=m(x-x_1)[/tex]
[tex]m[/tex] - slope
[tex](x_1,\ y_1)[/tex] - point
We have the point [tex](3,\ -2)\to x_1=3,\ y_1=-2[/tex] and the slope [tex]m=\dfrac{2}{3}[/tex]
Substitute:
[tex]y-(-2)=\dfrac{2}{3}(x-3)\\\\\boxed{y+2=\dfrac{2}{3}(x-3)}[/tex]
HELP NOW!!!!! now please
Answer:
first answer is -10
second answer is 10
third answer is -2
fourth answer is 2
Step-by-step explanation:
Explanation to get the answers:
you plug in the b c d and a
depending on what your abc and d are will depend on how the equation goes
like for example if the equation is
a x (c) - (-d) + b
and a=5, b=8, c=10, d=15
then you plug 5 where a is
plug in 10 where c is
plug 15 where d is as a negative
and lastly plug 8 where b is
if you have a calculator/graphing calculator i would use it to help answer these equations
a graphing calculator solves it for you without doing all the extra work like you would on a regular calculator
i use the graphing calculator to help solve equations like this specific one and it works very well
i hope my answers and explanation helps you :)
The second deposit that apex savings bank received was $12,700. If apex savings bank was required to keep $571.50 on reserve, what was the reserve rate at the time? How much was it free to loan out?
The Apex Savings Bank was required to keep a reserve of 4.5% of the deposit. The bank was free to loan out the remaining 95.5% which equaled $12,128.50.
Explanation:The reserve rate is the percentage of the deposit that the bank must keep, in this case, Apex Savings Bank. To calculate the reserve rate, we divide the reserve by the deposit and multiply by 100%. Therefore, ($571.50 / $12,700) * 100% = 4.5%. This means the bank had a reserve rate of 4.5% at that time.
Moving on towards the second question about how much Apex Savings Bank was free to loan out. Since the bank must keep 4.5% of the deposit, it is free to loan out the rest, which is 100% - 4.5% = 95.5%. By applying this percentage to the deposit, we see that Apex Savings Bank was free to loan out 95.5% of $12,700, or $12,128.50.
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Triangles ?ABC and ?DEF are similar. Find the lengths of the sides of ?DEF, if AB=2 cm, BC=3 cm, CA=4 cm, DE=1.5 cm.
The lengths of the sides of triangle DEF are DE = 0.75 cm, EF = 1.125 cm, and DF = 1.5 cm.
Explanation:Triangles ABC and DEF are similar, which means their corresponding angles are equal. In similar triangles, the ratio of the lengths of corresponding sides is constant. To find the lengths of the sides of DEF, we can use the ratio of the corresponding sides of ABC and DEF.
Let x be the length of DE in triangle DEF. Since DE corresponds to AB, we have the ratio x/2 = 1.5/4, which simplifies to x = 0.75 cm. Similarly, for EF corresponding to BC, y/3 = 1.5/4, giving y = 1.125 cm. Finally, for DF corresponding to CA, z/4 = 1.5/4, yielding z = 1.5 cm.
Therefore, the lengths of the sides of triangle DEF are DE = 0.75 cm, EF = 1.125 cm, and DF = 1.5 cm. This result is consistent with the idea that in similar triangles, the ratio of corresponding sides remains constant.
The calculation involved setting up and solving simple proportions based on the given lengths of the sides of triangle ABC and using them to find the lengths of the sides of triangle DEF.
Which expression has a solution of 56, if r = 8?
6r
7r
8r
9r
The required expression that has a solution of 56 is 7r. Option B is correct.
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
In order to determine the expression that has a solution of 56 when r = 8, lets inverse the expression, to determine the exact expression,
Now,
Let the constant value be x,
xr = 56
Put x = 8
8x=56
x = 56/8
x = 7
So the expression can be given as 7r = 56
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Find the sin(Θ) of an angle in standard position if the terminal side passes through the point (4, -8).
Note: Answer choices are attached below
Answer:
B) -2/√5
Step-by-step explanation:
see attached