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3 years ago

PLS HELP WILL MARK BRAINLIEST

Mathematics

2 answers:

KengaRu [80]3 years ago

6 0

12 meters i just did this yesterday in class

Lynna [10]3 years ago

3 0

Answer:

63 meters

Step-by-step explanation:

144-81=63

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What is the area of the moon?

nataly862011 [7]

The moon is roughly a sphere, with an average radius of 1,738 kilometers.

The area of a sphere is 4 pi R² .

Area of the moon = (4 pi) (1,738 km)² =

(12.566) (3,020,644 km²) = 3.796 x 10⁷ km²

3 0

3 years ago

PLEASE HELPP

agasfer [191]

Answer:

The solution to the system of equations be:

$x=3,\:y=-1$

Hece, option B is correct.

Step-by-step explanation:

Given the system of equations

$\begin{bmatrix}x-3y=6\\ 2x+2y=4\end{bmatrix}$

Multiply x − 3y = 6 by 2: 2x-6y=12

$\begin{bmatrix}2x-6y=12\\ 2x+2y=4\end{bmatrix}$

$2x+2y=4$

$-$

$\underline{2x-6y=12}$

$8y=-8$

so the system of equations becomes

$\begin{bmatrix}2x-6y=12\\ 8y=-8\end{bmatrix}$

Solve 8y = -8 for y

$8y=-8$

Divide both sides by 8

$\frac{8y}{8}=\frac{-8}{8}$

$y=-1$

$\mathrm{For\:}2x-6y=12\mathrm{\:plug\:in\:}y=-1$

$2x-6\left(-1\right)=12$

$2x+6=12$

subtract 6 from both sides

$2x+6-6=12-6$

$2x=6$

Divide both sides by 2

$\frac{2x}{2}=\frac{6}{2}$

$x=3$

Therefore, the solution to the system of equations be:

$x=3,\:y=-1$

Hence, option B is correct.

6 0

3 years ago

Read 2 more answers

Solve. −0.65p − 4 = 0.35p The solution is p =

Nuetrik [128]

Answer:

Step-by-step explanation:

Solution,

p=-4

If you found my answer useful then please mark me brainliest.

6 0

3 years ago

Picture of the questions are below.

Zigmanuir [339]

Step-by-step explanation:

Look at the picture below

6 0

3 years ago

Read 2 more answers

Sedaia [141]

21 students; 3/4 ; Possible explanation: 75% corresponds to 21 students.

So, 21 students met their reading goal. The fraction 75/100 represents 75%.

Therefore, 75/100, or 3/4, of 28 students met their reading goal.

Please mark Brainliest!

7 0

3 years ago

Read 2 more answers