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2 years ago

Use the distributive property to expand -4 (-2/5 + 3 x). Which is an equivalent expression?

Mathematics

1 answer:

Brrunno [24]2 years ago

7 0

Answer:

8/5-12x.

Step-by-step explanation:

To distribute, you simply need to multiply each of the terms inside of the parenthesis by -4. This will give you:

=-4( $\frac{-2}{5}$ )-4(3x)

=8/5-12x. This is your answer!

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Evaluate the expression when a=7 and b=4<br><br> 36/b+a

Rus_ich [418]

36/7+4
36/11
36÷11=3.27272727.... Repeating

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3 years ago

There are20 keys on a keychain. One of the keys starts a car. If a key is randomly chosen what is the probability that it starts

pogonyaev

The answer is 5%........

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3 years ago

Calculate the value of the exterior angle

aev [14]

What we know is that the sum of a triangle's internal angles are 180º, and a straight angle makes 180º.

first, we have to find the third internal angle(let's call it n) so that we can use it to find the exterior angle.

(3x + 20) + (4x + 5) + n = 180

simplify:

7x + 25 + n = 180

7x + n = 155

n = 155 - 7x

Now we can add it to the external angle to find x.

(155 - 7x) + (8x + 15) = 180

simplify:

170 + 8x - 7x = 180

170 + x = 180

x = 10

Now we can substitute it to the external angle.

8 x 10 + 15 = 95

the exterior angle is 95º.

8 0

3 years ago

Idk sooo please help

borishaifa [10]

Answer:

20 points

Step-by-step explanation:

Points:

21, 13, 14 and x for the last game

Average:

(21+13+14+x) / 4 = 17
48 + x = 4*17
48 + x = 68
x = 68 - 48
x = 20

They must score 20 points

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3 years ago

What do you call a female bug that floats math worksheet answer key?

Elena L [17]

Answer to this problem will depend upon the set of questions given with the worksheet or page having question "What do you call a female bug that floats math worksheet answer key?".

You haven't provided the set of questions but i can explain about how to get the answer of the name of bug in that sheet.

Look at the sample picture of similar problem that is attached with the answer. You have to solve the given set of problem and fill the correct matching answer in the blank box.

Say answer of first problem is choice named "T" then fill the letter "T" in the blank box numberd "1".

Same way solve other problem and fill correct name of the letter in each blank boxes.

Now rearrange letters in your answer box in increasing order of numbers 1 to 15. The resulting name will be the final answer for the name of the bug.

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2 years ago