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4 years ago

What is 5x + 5= -15 A -4 B -9 C -2 D -1

1 answer:

6 0

The correct answer is a || move the constant over (5x=-15-5), combine like terms (5x=-20), divide both sides by 5 to get x alone (x=-20/5), solve (x=-4) || please mark brainliest

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Find the area of the circle<br> a-21.98 m2<br> b-153.86 m2<br> c-14 m2<br> d-483.13 m2

Fantom [35]

Answer:

B) $153.86 meters^{2}$

Step-by-step explanation:

The formula for the area of a circle is : $\pi *radius^{2}$

The radius of a circle is the length from one side to the centre.

To work this out you would have to multiply pi by the radius of 7 squared, this gives you 153.94, however if using pi as in 3.14, then the answer is 153.86.

1) Multiply pi by 7 squared.

$\pi *7^{2} =153.86 meters^{2}$

6 0

4 years ago

Read 2 more answers

1 2.5.3 Quiz: Factoring and Graphing

SashulF [63]

C. X= 7 only

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7 0

3 years ago

How many mL are there in 3,700 microliters?

rewona [7]

Answer:

3.7 mL

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Please help! No links please! Will give brainliest to correct person!!

____ [38]

Answer:

About 50.14 Centimeters

Step-by-step explanation:

The formula for the volume of a cylinder is:

$\pi(r^2)h$

Now, let's plug in the values. (We'll use 3.14 for pi.)

$3.14(r^2)76 = 600,000$

All we do now, is solve for r. Divide 76 on both sides...

$3.14(r^2) = 7894.74$

Divide 3.14 on both sides...

$r^2 = 2514.25$

Lastly, find the square root on both sides.

$\sqrt{r^2} = \sqrt{2514.25}$

$r = 50.14$

Therefore, the r, or the radius, is around 50.14 centimeters. Hope this helps!

7 0

3 years ago

Solve the following system of linear equations.

andrey2020 [161]

To solve a problem like this, you will need to use substitution or elimination. For the sake of an example I will solve this using substitution.

First, solve one of the equations for x or y:
3x-5y=-39
3x=-39+5y
X=(-39+5y)/3

Then substitute for the value of x in the second equation:
6x+2y=-42
6((-39+5y)/3)+2y=-42

Solve for y:
-78+10y +2y=-42
-78+12y=-42
12y=36
Y=3

Once you've solved for y, you can plug in it's value to find x:
X=-39+5(3)/3
X=-24/3
X=-8

So, we can conclude that the correct answer is B. (-8,3)

6 0

3 years ago

Read 2 more answers