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3 years ago

Which expression forms an equation with the given expression? 8 • 7 – 4 = ___________ ?

Mathematics

1 answer:

Assoli18 [71]3 years ago

7 0

First find the answer to the original equation: 8*7-4 = 56-4 = 52

A. = (2+9)*2 = 11*2 = 22

B. = 10*3-6 = 30-6 = 24

C. = 9*5+7 = 45+7 = 52

D. = (12/2) = 6

The correct answer would be C.

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Explain the expression -8 times 7

xz_007 [3.2K]

Answer:

well technically it is -8x7 because it has the word times and most of the time times means multiplication

Step-by-step explanation:

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3 years ago

Using words, explain all steps of dimensional analysis when converting 6.7 hectometers to meters.

inessss [21]

6.7 hectometers = 670 meters.

Solution:

Given 6.7 hectometers.

To convert hectometers into meters:

Conversion unit:

1 hectometer = 100 meters

We have 6.7 hectometers.

So multiply 6.7 by 100, we get

6.7 hectometers = 6.7 × 100 meters

= 670 meters

Hence 6.7 hectometers = 670 meters.

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4 years ago

Explain roller coaster steps potential and kinetic energy

DiKsa [7]

Answer:

Step-by-step explanation:

Potential energy=stored energy so say when the roller coaster stops somewhere they are storing energy.

In then when they just go down there would now be using kinetic energy.

Hope this helps have a great afternoon:)

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2 years ago

Can you please help me because I can’t do it right

Dovator [93]

12% growth

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20% decay

22% growth

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3 years ago

What is the quotient in simplified form ? Need help please

Gre4nikov [31]

Answer:

$-\dfrac{4a^{12}b^8}{5}$

Step-by-step explanation:

The applicable rules of exponents are ...

$\dfrac{1}{a^{-b}}=a^b\\\\a^ba^c=a^{b+c}$

Your ratio simplifies to ...

$\dfrac{-8a^8b^{-2}}{10a^{-4}b^{-10}}=-\dfrac{4}{5}a^{8-(-4)}b^{-2-(-10)}\\\\=-\dfrac{4a^{12}b^8}{5}$

_____

Please note that simplifying the constants, -8/10 to -4/5, eliminates half the answer choices. Since exponents are only multiplied when a power is raised to a power, you can pretty much eliminate the second choice as being unreasonable. ((a^b)^c = a^(bc))

8 0

4 years ago