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nikdorinn [45]
2 years ago
12

I need help with 21 22 23.

Mathematics
2 answers:
olasank [31]2 years ago
8 0
Find the square root of the area and yiull get the answer
N76 [4]2 years ago
4 0

Since each one is a square, each side has to be the same length. I know that 12×12 is 144, so for the first square, each side is 12 inches. Then, use the formula to determine the perimeter. 4×12=48, so the first perimeter is 48 inches. For the second, I know that 9×9=81, so each side is 9. 4×9=36, so the perimeter is 36. For the last, each side is 18 inches. 4×18=72, so the perimeter is 72 inches.

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A homeowner uses a $10 bill to pay a neighbor for cutting his lawn. The
timama [110]

Answer:

c

Step-by-step explanation:

It has a constant value.

7 0
3 years ago
Consider the parabola given by the equation: f(x) = 2x2 + 14.0 – 4
Softa [21]

Answer:

Step-by-step explanation:

f(x)  = 2x² + 14x - 4

= 2(x² + 7x) - 4

= 2(x² +7x + 3.5²) - 2(3.5²) - 4

= 2(x+3.5)² - 28.5

vertex (3.5, -28.5) = (7/2, -57/2)

The vertical intercept is the y-intercept, i.e., f(0) = -4.

The x-intercepts are the values of x for which y=0.

2x² + 14x - 4  = 0

x = [-14±√(14²-4(2)(-4))]/[2(2)] = [-7±√57]/2 ≅ -7.27, 0.27

5 0
2 years ago
Solve for x (geometry)
vitfil [10]
I got 3.75. not sure if it’s right but hope i helped
6 0
3 years ago
Read 2 more answers
Julia sells subs for $6 each. How many subs will she need to sell to break even each month based on the costs listed below?
andrey2020 [161]

Answer:

2777.7777... subs

Step-by-step explanation:

11000+400+1300+300=13000

6-1.32=4.68

13,000/4.68

=2777.777777...

3 0
1 year ago
Helppppppppp fasttttttt pleaseeeeeee!!!!!!!
Daniel [21]

Answer:

(3x⁷)⁴ = 3⁴x²⁸ = 81x²⁸

because (3x⁷)⁴ = cx^n

=> c = 81

n = 28

7 0
3 years ago
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