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Mathematics

1 answer:

Katarina [22]3 years ago

5 0

the students took math and physics = 55

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Use 1% or 10% to estimate 93% of 149 A. 169.5 B. 13.5 C. 112 D. 135

irakobra [83]

93% of 149

10% of 149 = 14,9

93% of 149 > 90% of 149

93% of 149 > 149 - 14,9 ≈ 149-15≈134
> 134
⇒ the answer is D

5 0

3 years ago

The function h(t) = -4.9t² + 19.6t is used to model the height of an object projected in the air where h(t) is the height (in me

goblinko [34]

Answer:

Step-by-step explanation:

when h(t)=0

-4.9 t²+19.6t=0

4.9t(-t+4)=0

either t=0 or t=4

so domain is 0≤t≤4

for range

h(t)=-4.9t²+19.6t

=-4.9(t²-4t+4-4)

=-4.9(t-2)²+19.6

so range is 0≤h≤19.6

5 0

3 years ago

Read 2 more answers

Predict the next three numbers in the pattern. 4 comma 2 comma 1 comma one half comma one fourth ,

kolbaska11 [484]

I think that the next numbers are 1/3, 1/5 and 1/6

4 0

3 years ago

What is the leading coefficient that would be used for scientific notation of this number? (12,500,000,000)

SIZIF [17.4K]

Answer:

1.25 would be the leading coefficient

Step-by-step explanation:

Leading coefficients in scientific notation have to be more than 1, and less than 10. Therefore, 12.5 or 0.125 would not be correct answers as they do not fit the criteria. Only 1.25 would work as the leading coefficient.

4 0

2 years ago

Problem PageQuestion Working together, two pumps can drain a certain pool in hours. If it takes the older pump hours to drain th

gizmo_the_mogwai [7]

Answer:

10.5 hours.

Step-by-step explanation:

Please consider the complete question.

Working together, two pumps can drain a certain pool in 6 hours. If it takes the older pump 14 hours to drain the pool by itself, how long will it take the newer pump to drain the pool on its own?

Let t represent time taken by newer pump in hours to drain the pool on its own.

So part of pool drained by newer pump in one hour would be $\frac{1}{t}$ .

We have been given that it takes the older pump 14 hours to drain the pool by itself, so part of pool drained by older pump in one hour would be $\frac{1}{14}$ .