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3 years ago

13

I really need help with this and I looked up how to this with a lots of websites and I looked up youtube so if u know how to do

this please help???

1 answer:

nikitadnepr [17]3 years ago

6 0

If you are trying to solve for X the answer is -9

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Solve the system by substitution.<br> - 2x – 10y = -2<br> -4y = x

mihalych1998 [28]

Answer:

x = -4 and y = 1

Step-by-step explanation:

hope this helps please like and mark as brainliest

4 0

3 years ago

The Great Pyramid of Giza is a square pyramid located by El Giza, Egypt. The height of the pyramid is currently 455.4 feet. The

jonny [76]

V = a²h/3

Plugging values in we get 8.67X10^7, or 86,700,000

3 0

3 years ago

What is (y-10)(4y+2)?

AleksandrR [38]

Answer:

4y²−38y−20

Step-by-step explanation:

(y−10)(4y+2)

=(y+−10)(4y+2)

=(y)(4y)+(y)(2)+(−10)(4y)+(−10)(2)

=4y²+2y−40y−20

=4y²−38y−20

please mark me brainliest!

8 0

3 years ago

Read 2 more answers

Solve the proportion below. 7/x=19

alexgriva [62]

Answer:

The value of x is approximately 0.3684.

Step-by-step explanation:

Given:

$\frac{7}x}=19$

We need to solve the proportion.

Solution:

Now we can see that;

In given equation one number is fraction and other number is whole number.

Now To make whole number into fraction we will divide by 1.

hence the whole number will be equal to;

$19=\frac{19}{1}$

Now the new equation will be;

$\frac{7}{x}=\frac{19}{1}$

Now by cross multiplication we get;

$7\times1=19\times x\\\\7=19x$

Now dividing both side by 19 we get;

$\frac{7}{19}=\frac{19x}{19}\\\\x\approx0.3684$

Hence the value of x is approximately 0.3684.

6 0

4 years ago

A maps key shows that every 5 inches on the map represents 200 miles of actual distance. Suppose the distance between two cities

ryzh [129]

Hello there, and thank you for posting your question here on brainly.

Short answer: 280 miles.

Why?

You can find this out by finding out how much 1 in is by dividing 200 by 5. (200 / 5 ==> 40) So 1 in = 40 miles. Now, we multiply that by 7, so we can find out how much 7 in would be. (7 * 4 ==> 280) 7 inches on the map represents 280 miles.

Hope this helped you! ♥

3 0

3 years ago