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Annette [7]
3 years ago
12

"!MATH!" How do you solve x+2=3x-4? Please explain step-by-step.

Mathematics
1 answer:
ki77a [65]3 years ago
8 0
I will give you my solution down here
3x-x=2+4
2x=6
x=3

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If Lisa earns $45 in 7.5 hours, find her unit rate in dollars per hour.
MakcuM [25]

Answer: lisa earns 6 dollars per hour

Step-by-step explanation:

45 divided by 7.5 =6

5 0
3 years ago
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​$4000 is deposited in an account that pays an APR of 8.4​% compounded annually. How long will it take for the balance to reach
patriot [66]

Answer: number of years that it will take for the balance to reach ​$120,000 is 42 years

Step-by-step explanation:

Initial amount deposited into the account is $4000. This means that the principal is $4000

P = 4000

It was compounded annually. This means that it was compounded once in a year. So

n = 1

The rate at which the principal was compounded is 8.4%. So

r = 8.4/100 = 0.084

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A = P(1+r/n)^nt

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30 = 1.084^t

t = 42 years

8 0
3 years ago
What expression is equivalent to 5(a + a + a )
Alecsey [184]

Answer:

15a

Step-by-step explanation:

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3 years ago
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The number of feet in an unknown
Vlad [161]

There are 3feet in one yard.

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3 0
2 years ago
Please help fast geometry !!
kotegsom [21]

Answer:

1733.28

Step-by-step explanation:

we want to find the surface area of the cylinder

We are given:

diameter = 12in

height = 40in

formula to find surface area of a cylinder: SA = 2πr^2 + 2πrh (where h = height and r = radius)

in order to find the SA of a cylinder we need to know the radius

we are given that the diameter is 12

we can acquire the measure of the radius by dividing the diameter by 2 ( this is because the radius is equal to half of the diameter )

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now to find the surface area,

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SA = 2πr^2 + 2πrh

r = 6

h = 40

( note it says use 3.14 for π )

substitute values

SA = 2(3.14)(6)^2 + 2(3.14)(6)(40)

if you plug this into a calculator you get that the surface area is 1,733.28

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2 years ago
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