MATHEMATICS MIDDLE SCHOOL

Direct Variation: If y = 6, when x = -2, find y when x = 18.

Answers

Answer 1
Answer:

Answer:

The answer is -54. Please mark as brainliest :)

Step-by-step explanation:

Y is directly proportional to x. So....

Finding the value of constant k.

y=kx

6=-2k

-3=k.

Finding y when x is 18

y=-3*18

y=-54.

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How do I solve 8x - 4x - 60 = -12
A used book sale charged $7.50 for hardcovers and $1.25 for paperbacks. During the sale, 15 hardcovers were sold and the sale earned $166.25. Write and solve an equation to determine the number of paperbacks, p, that were sold. 20 points i think
(2x^3+4x^2-3)+(6x^3+4x-4)​
The figure shows a smaller square within a larger square. A point is chosen at random inside the larger square. What is the probability that this point is in the shaded area? Write the answer as a decimal.

Which expression is the lcd of these fractions 4/x^2y 20/xy

Answers

LCD of      4       and   20
              (x^2)y           xy

Without any mathematical operations involved, ask yourself how many common variables are in the denominators.   x^2 is the same as (x)(x)

so we have           4              and             20      
                        (x)(x)(y)                          (x)(y)

So what we have in common is one (x) and one (y).

The LCD is xy
    
The answer is x^2y. i just took this quiz and this is 100% the correct answer!

UwWhich triangle's area would be calculated using the trigonometric area formula?
А
12
10
7100
290
40°
X
250
C
6
L
, B
R
5
D
7
F
Intro
Done

Answers

The required,  any triangle that has two sides and the included angle between them given can have its area calculated using the trigonometricarea formula.

What is the triangle?

The triangle is a geometricshape that includes 3 sides and the sum of the interior angle should not be greater than 180°

The trigonometric area formula can be used to calculate the area of a triangle when we know the lengths of two sides and the included angle between them. The formula is:

Area = 1/2 * a * b * sin(C)

where a and b are the lengths of the two sides, and C is the angle between them.

Therefore, if we are given the lengths of two sides and the angle between them, we can use the trigonometric area formula to calculate the area of the triangle. This formula is particularly useful when we do not know the height of the triangle or cannot easily calculate it using other methods.

So, any triangle that has two sides and the included angle between them given can have its area calculated using the trigonometric area formula.

Learn more about triangles here:
brainly.com/question/2773823

#SPJ7

Answer:

ITS THE SECOND ONE

Step-by-step explanation:

Sarah walks 3.1 kilometers on Monday and 1.35 kilometers on Tuesday. On Wednesday she walks 2.4 times as far as she walked on the previous two days combined. How far does Sarah walk on Wednesday?

Answers

Answer:10.68

Step-by-step explanation:

3.1 + 1.35 = 4.45 4.45 × 2.4 = 10.68

Answer:

10.68

Step-by-step explanation:

i worked it out on a piece of paper but this is my answer

2(5x-7)=2x+10 what Is the distributive property

Answers

Answer:x = 3

Step-by-step explanation:

2(5x-7)=2x+10

distribute 2(5x-7)

=2*5x - 2*7

  ∨       ∨

  10x - 14

10x - 14 = 2x + 10

add 14 to both sides

10x-14=2x+10

    +14      +14

simplify

10x=2x+24

subtract 2x to both sides

10x=2x+24

-2x -2x

simplify

8x=24

divide both sides by 8

 8x=24

÷8x ÷ 8x

x = 3

Alder is ordering invitations for a holiday party. The invitations cost $3.75 each, plus an additional $5.00 fee for printing.Which table represents the cost of the invitations?

Answers

let the number of invitations be x.
3.75x + 5 = cost of invitations..

Carl takes a random sample of 100 students in his school and finds that 72% of the sample prefers pizza over burgers there are 1,500 students in the school based on the sample proportion how many students in the school would be expected to prefer pizza over burgers \\\\ either 72,100,1080,1500

Answers

Out of the 100 people in the sample, 72% said they preferred pizza. That 72% should be the same for the whole school.

1500 × .72 = 1080

about 1080 students in the school prefer pizza

Answer:

it would be 1080
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