3 years ago

What is the value of 4 2/3 divided by 2/5

Mathematics

1 answer:

Nitella [24]3 years ago

6 0

4 2/3 /2 /5
14/3 / 2/5 cross multiply
7/3 / 1/5 multiply 7 and 5 and 3 and 1
35/3 simplify
11 2/3

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What integer describes a decrease of seven? (A. 7 / B. -7 / C. 0 / D. 1/7)

Pie

Answer:

I thin B -7 cause its negative and negative goes down.

Step-by-step explanation:

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3 years ago

if a halloween shop in the us buys 20,000 trump masks for $5 each and sells each for $20 each how much money will they make in p

Komok [63]

300,000 dollars

20-5= 15
15 × 20,000 = 300,000

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3 years ago

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4. ____________________ is an equation that states a relationship between one quantity and one or more other quantities. *

telo118 [61]

8. I think it’s parallel lines.

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3 years ago

Solve the equation 15x=60

Tcecarenko [31]

Answer:

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Step-by-step explanation:

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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