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galina1969 [7]
4 years ago
15

Which power has a greater value? -3^2 or 2^3

Mathematics
1 answer:
sweet [91]4 years ago
4 0

-3^2 = 9

2^3 = 8

-3^2 has a greater value.

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the measure of one angle of an isosceles trapezoid is x and the angle opposite it is x+20,what is the value of x​
lakkis [162]

Answer:

X=80

Step-by-step explanation:

I suppose the graph will be like this:

Since isosceles trapezoid, red lines are parallel.

X+x+20= 180

2x+20=180

2x=160

X=80

5 0
3 years ago
Molly's basic cell phone plan charges $35.99 for service plus $0.21 per minute beyond the included 250 minutes in the plan. How
Ilia_Sergeevich [38]
The answer is $84.29

Let the number of minutes be x.
$35.99 is fixed price and does not depend on the number of minutes x. Each minute costs $0.21 so it depends on x and we have 0.21x in the function. However, 250 minutes are already included and should not be included in x. Therefore, the function that represents the monthly cost looks like this:
f(x) = 35.99 + 0.21 * (x - 250)

Now, let's calculate for x = 480 minutes:
f(480) = 35.99 + 0.21 * (480 - 250)
f(480) = 35.99 + 0.21 * 230
f(480) = 35.99 + 48.30
f(480) = 84.29
6 0
3 years ago
gina writes 2 pages per hour write an equation that shows the relationship between the hours spent writing x and the total pages
mart [117]

Answer:

y=2x

Step-by-step explanation:

6 0
3 years ago
Find the perimeter of the triangle shown.Simplify your answer.Show all your work.
VashaNatasha [74]
Answer: 12 sqrt(5)

Explanation:
First simplify:
= Sqrt(45)
= sqrt(9*5) sqrt of 9 is 3 so bring out 3
= 3sqrt(5)

= 2sqrt(20)
= 2sqrt(4*5) sqrt of 4 is 2 so bring that out and multiply it by 2
= 4sqrt(5)

= 5 sqrt(5) is already simplified

= 3sqrt(5) + 4 sqrt(5) + 5sqrt(5)
= 12 sqrt(5)
7 0
3 years ago
Which number is rational?
salantis [7]

The last one is rational because it is a terminating decimal.

8 0
4 years ago
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