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3 years ago

Use the distributive property to write an equivalent expression -3(2x + 11)

1 answer:

4 0

Multiply the -3 by everything inside so do -3 x 2x which would be -6x then do -3 x 11 which is -33 so the equation would be -6x-33

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Pls help me and i will know if it is wrong

DENIUS [597]

9514 1404 393

Answer:

90 miles

Step-by-step explanation:

Let d represent the distance to Grandma's house.

The speed going was ...

speed = distance/time

speed = d/2

The speed coming home was ...

speed = d/2.25

The difference of these speeds is 5 miles per hour:

d/2 -d/2.25 = 5

2.25d -2d = 5(4.50) . . . . . multiply by 4.50

0.25d = 22.5 . . . . . . . . . . .simplify

d = 90 . . . . . . . . . . . . . . . . multiply by 4

Grandma's house is 90 miles away.

8 0

3 years ago

Which is a solution to the equation 3x^2 + 2x − 20 = 2x^2 + 15?

pychu [463]

the answer is b)-7 or it could be 5

6 0

3 years ago

Maria consumed 1.75 gallons of water in one day. how many milliliters are equal to 1.75 gallons?

gregori [183]

Answer:

6624.471 millilitres

(btw i love the pfp)

5 0

3 years ago

Read 2 more answers

A rectangle on a coordinate plane has vertices Q(-1, 1), R(6,1), S(6,-8), and T(-1,-8). What are the dimensions of the rectangle

xeze [42]

Answer:

The length is 9.

The width is 7.

Step-by-step explanation:

A rectangle has two dimensions.

The width, which is the distance between the points who have the same value of y.

The length, which is the distance between the points who have the same value of x.

Distance between 2 points:

Points (a,b) and (c,d).

$D = \sqrt{(c-a)^{2} + (d-b)^{2}}$

Same value of x:

(-1,1), (-1-8) or (6,1), (6,-8)

The distance for both of them is the same, can calculate for only one.

$L = \sqrt{(6-6)^{2} + (-8 - 1)^{2}} = \sqrt{81} = 9$

The length is 9.

Same value of y:

(-1,1), (6,1) or (6,-8), (-1,-8)

$W = \sqrt{(6 - (-1))^{2} + (1 - 1)^{2}} = \sqrt{49} = 7$

The width is 7.

6 0

4 years ago

Read 2 more answers

The ratio of the side lengths triangle is 7:24:29 and it’s perimeter is 180 m. What are the side lengths of the triangle? Select

kakasveta [241]

Answer: Only 21:72:87

Explanation: We know that the side lengths are not simply 7, 24, and 29, as the sum of these is only 60.

Therefore, we need to find the scale factor they were multiplied by to have side lengths with a sum of 180.

We can use 7x+24x+29x=180.

This becomes 60x=180 and the scale factor is x=3.

7*3=21, 24*3=72, and 29*3=87.

6 0

3 years ago