HELP I DONT UNDERSTAND HOW TO DO THIS TYPE OF PROBLEM I FORGOT. please give a good explanation

Mathematics

1 answer:

Levart [38]2 years ago

7 0

Answer:

i have no idea sry man lol

Step-by-step explanation:

no idea

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Combine Like Terms. 7x - 5x

Nesterboy [21]

Answer:

Step-by-step explanation:

7x= 7*x

5x=5*x

Subtract.

7-5=2

2*x=2x

So 2x is the answer.

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3 years ago

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A motorcycle and a car leave an intersection at the same time. the motorcycle heads north at an average speed of 20 miles per h

satela [25.4K]

First, determine the distance of the motorcycle and the car from the start point. The distance could be determined using
$\boxed{d=v \times t}$
d stands for distance, v stands for speed, t stands for time

The car
d = 48 × t
d = 48t

The motorcycle
d = 20 × t
d = 20t

At the end of t hours, the car is 48t miles (east) from the start point and the motorcycle is 20t miles (north) from the start point.

Second, determine the distance between 48t miles at east and 20t miles at north using pythagoras
distance = $\sqrt{(48t)^{2}+(20t)^{2}}$
distance = $\sqrt{2304t^{2}+400t^{2}}$
distance = $\sqrt{2704t^{2}}$
distance = 52t

The expression for their distance apart at the end of t hours is 52t

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3 years ago

Which expression is equivalent to 5^10•5^5?

Tju [1.3M]

When we have exponents multiplied with the same base we add them so 5^5*5^10=5^15

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2 years ago

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the resendez family pays a monthy base charge for their electricity plus a charge for each kilowatt-hour used. In april, their e

IRISSAK [1]

Answer:

about $0.20 per kilowatt-hour. i hope this helps