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3 years ago

Use the distributive property to rewrite the expression –2(6 – x) without parentheses.

Mathematics

2 answers:

Gala2k [10]3 years ago

8 0

The formal would be a(b + c) = ab + ac
plug in your numbers and you'll have your answer (:
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Mandarinka [93]3 years ago

6 0

-12+2x hope this helps :)

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The dimension of a rectangular prism are 5cm, 5 cm, and 2 cm determine the surface area

kakasveta [241]

Answer:

A 50

Step-by-step explanation:

Multiply 5 x 5 to get 25. Then multiply 25 x 2 to get 50 as the surface area!

Hope this helps! Pls mark brainliest!

6 0

3 years ago

B is the midpoint of AC. What is the length of AB? AB is 9x+7 and BC is -3x+20

ahrayia [7]

<h3>Answer:</h3>

$AB = \frac{67}{4}\\$

<h3>Step-by-step explanation:</h3>

If $B$ is the midpoint of $\overline{AC}$ then $AB$ is just half of $AC$ and also, $BC$ is just half of $AC$ . This means that $AB$ must be equal to $BC$ . Essentially, $9x +7 = -3x +20$ and we can solve for the of $x$ from that equation.

$9x +7 = -3x +20 \\ 9x +7 +3x = -3x +20 +3x \\ 12x +7 = 20 \\ 12x +7 -7 = 20 -7 \\ 12x = 13 \\ \frac{12x}{12} = \frac{13}{12} \\ x = \frac{13}{12}$

Now we can solve for $AB$

$AB = 9(\frac{13}{12}) +7 \\ AB = 3(\frac{13}{4}) +7 \\ AB = \frac{39}{4} +7 \\ AB = \frac{39}{4} +\frac{28}{4} \\ AB = \frac{67}{4}$

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3 years ago

Two trains leave stations 546 miles apart at the same time and travel toward each other. One train travels at 95 miles per hour

Ira Lisetskai [31]

<u>Answer:</u>

It will take 2 hours 36 minutes for the two trains to meet.

<u>Step-by-step explanation:</u>

The distance between the two trains is decreasing by $95+115= 210$ miles per hour, which can be written as $\frac{210 miles}{1 hour}$ .

So at this rate, the distance between the trains will be reduced to zero in:

$\frac{546 miles}{\frac{210 miles}{1 hour} } = 476 miles * \frac{1 hour}{210 miles}$

$= \frac{546}{210} = 2.6 hours$

Changing 2.6 hours to hours and minutes:

$2 hours + 0.6 hours = 2 hours + (0.6 * 60) = 2 hours + 36 minutes$

Therefore, it will take 2 hours 36 minutes for the two trains to meet.

6 0

3 years ago

One of the largest pumpkins ever grown weighed about 3 over 4 ton. How many pounds did the pumpkin weigh???

Naily [24]

Since a ton is 2000 pounds, 2000/4=500. 500*3=1500 The pumpkin weighs 1,500 pounds.

You can also just do 2000*3/4=6000/4=1,500

6 0

4 years ago

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what is the image of the point ( -4, 8) after a rotation of 90° counterclockwise about the origin

lesya [120]

Answer:(-8,-4)

Step-by-step explanation:

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3 years ago