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2 years ago

Answer the following about estimating 5,392/7.

Mathematics

2 answers:

saul85 [17]2 years ago

5 0

Answer:

5600/7

It is an overestimate

Anuta_ua [19.1K]2 years ago

3 0

The answer is
5,392/7 = 770.29

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3 years ago

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Who is Albert Einstein?

madreJ [45]

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3 years ago

The following exchange rate is given: £1 = 1.12 euros. Convert £9 into euros.

raketka [301]

Answer:

10.08 Euro's

Step-by-step explanation:

Given that we know,

£1 = 1.12 Euro's.

To Simply convert it to Euro's you would multiply, 1.12 x 9 in order to find out what £9 is worth in Euro's.

Thus giving you,

10.08 Euro's

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3 years ago

Write the square or cube fit each number.

ruslelena [56]

Answer and Step-by-step explanation:

1) 12*12 = 144

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3 years ago

A rocket is launched from the top of a 55-foot cliff with an initial velocity of 138 ft/s.

melisa1 [442]

For this case we have that the equation that describes the height is:

$h = -16t ^ 2 + vt + c$

Where,

v: initial speed

c: initial height

Substituting values we have:

$h = -16t ^ 2 + 138t + 55$

Then, to find the time, we use the quadratic formula:

$t =\frac{-b +/-\sqrt{b^2 - 4ac} }{2a}$

Substituting values we have:

$t =\frac{-138 +/-\sqrt{138^2 - 4(-16)(55)} }{2(-16)}$

Rewriting:

$t =\frac{-138 +/-\sqrt{19044 + 3520} }{-32}$

$t =\frac{-138 +/-\sqrt{22564}}{-32}$

$t =\frac{-138 +/-150.21}{-32}$

We discard the negative root because we want to find the time.

We have then:

$t =\frac{-138 -150.21}{-32}$

$t =\frac{-288.21}{-32} \\t=9$

Answer:

D. $0 = -16t^2 + 138t + 55; 9 s$

3 0

3 years ago