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Andrews [41]
3 years ago
6

John builds a square dog pen that has an area of 81 square feet. He then builds a

Mathematics
1 answer:
Fiesta28 [93]3 years ago
8 0

Answer:

21.0%

Step-by-step explanation:

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Please help me with these questions and show how u got them, i will mark you brainliest !
lianna [129]

Answer: 1) 25b   2) ac   3)ba

1) Since b is unknown, your answer will be 25b

2) Since both variables, a and c, are unknown, your answer will be ac

3) Since both are unknown here, it will be ba!

4 0
3 years ago
For her phone service, Lisa pays a monthly fee of $27, and she pays an additional $0.05 per minute of use. The least she has bee
Sergio [31]
The equation to find the amount of money spent is 27 + 0.05m. This equation, in this case, needs to be larger or equal to 90.70. So our inequality would be:

27 + 0.05m >= 90.70

Now we can solve this equation for m.

27 + 0.05m >= 90.70
0.05m >= 63.70
m >= 1274
4 0
3 years ago
Evaluate x^-2 for x = -3.
Hitman42 [59]

Hey there!

If x = -3 then replace "x" with -3

New equation: -3^-2

(-1 × 3)^-2

(-1 / 3 )× 3

3 × 3 = 3^3 = 9 (Solving for your denominator)

(-1/3)^2

= (1/9)

This your answer is: 1/9

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

3 0
3 years ago
8(x - 6) +10 = 8x - 37 pls help answer
kirill115 [55]

Answer:

Its a no solution problem.

3 0
3 years ago
Read 2 more answers
Solve the second equation.<br>2x - y = 8<br>First, solve for (-y).<br>--y =<br>​
kicyunya [14]

Answer:

-y=-2x+8\\y=2x-8

Step-by-step explanation:

To solve, first subtract 2x from both sides.

2x-y=8\\-y=-2x+8

You appear to want the solution for -y, so I've included it. Given that you also want the solution for y, divide both sides by -1.

-y=-2x+8\\y=2x-8

5 0
3 years ago
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