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Tanzania [10]
2 years ago
14

5a²-44=81 what are the solutions to the equation? A. ± 25 B. -5 C. ± 5 D. ± 125

Mathematics
1 answer:
Masteriza [31]2 years ago
6 0

Answer:c

Step-by-step explanation:

Add 44 to both sides and divide by 5 (on both sides) then apply the square root

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Semmy [17]

Answer:

D

Step-by-step explanation:

using the definition of nP_{r} = \frac{n!}{(n-r)!}

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here n = 7 and r = 4, hence

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7P_{4} = 7 × 6 × 5 × 4 = 840 → D


4 0
2 years ago
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Need help on this one
Advocard [28]

Answer:a

Step-by-step explanation:

That’s one cracked screen

3 0
3 years ago
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PLEASE HElp asap <br> Solve for x.<br> x = [?]<br> X + 19<br> 7x + 9
Bess [88]
X + 19 + 7x + 9 = 180
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3 0
3 years ago
David was trying to sleep one night but there was too much noise around him? His clock ticked every 5 seconds , a tap was drippi
Monica [59]

Answer:

A) 420 seconds = 7 minutes

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Step-by-step explanation:

A) After how many second would all three things happen together again?

Solution:

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7 0
3 years ago
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4 x 5 - 3

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3 years ago
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