2 years ago

PLZ WRITE AN EQUATION

Mathematics

2 answers:

Marrrta [24]2 years ago

8 0

6.25x+7.50=26.25 x is for each round played

zalisa [80]2 years ago

3 0

The answer should be 6.25x+7.50=26.25!

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8 times what equals 48

Vera_Pavlovna [14]

6 be cause 8 times 6 equals 48

7 0

3 years ago

Read 2 more answers

Complete each ordered pair so that it is a solution of the given linear equation. x - 3y=4;(.-3), (-11, ) The first ordered pair

AURORKA [14]

Answer:

Step-by-step explanation:

x - 3y = 4

x - 3(-3) = 4

x + 9 = 4

x = -5

(-5, -3)

-11 - 3y = 4

- 3y = 15

y = -5

(-11, -5)

I don't see how (0, -3) could be a solution to the equation.

3 0

2 years ago

The perimeter of a semicircle is 5.14 feet. What is the semicircle’s area?

hammer [34]

$\bf \textit{circumference of a semi-circle}\\\\
C=\pi r\qquad 
\begin{cases}
r=radius\\
-----\\
C=5.14
\end{cases}\implies 5.14=\pi r\implies \boxed{\cfrac{5.14}{\pi }=r}\\\\
-------------------------------\\\\
\textit{area of a semi-circle}\\\\
A=\cfrac{\pi r^2}{2} \implies A=\cfrac{\pi }{2}r^2\implies A=\cfrac{\pi }{2}\left( \boxed{\cfrac{5.14}{\pi }} \right)^2
\\\\\\
A=\cfrac{\pi }{2}\implies \cfrac{5.14^2}{\pi ^2}\implies A=\cfrac{26.4196}{2\pi }\implies A=\cfrac{13.2098}{\pi }$

5 0

2 years ago

Nelson finds a video game for $38.50. The game is on sale for $31.57. What is the percent of discount on the game?

Zigmanuir [339]

38.50 = 100%
31.57 = ?

Multiply: 31.57 x 100 = 3,157

Divide: 3,157 ÷ 38.50 = 82%
100-82= 18% discount

8 0

3 years ago

4x−2y=14 y=12x−1 solve by substitution

Tatiana [17]

Answer:

x= -3/5

Step-by-step explanation:

4x-2y=14

y=12x-1

4x-2(12x-1)=14

4x-24x+2=14

4x-24x=12

-20x=12

×= -12/20

x= -3/5

8 0

3 years ago