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3 years ago

How many solutions does this equation have? a+3+2a=-1+3a+4

1 answer:

6 0

Let's start by cleaning up this equation to make it easier to read by putting all the variables on one side and everything else on the other side using subtraction and addition. Then simplify.
1) Original equation
<span>a + 3 + 2a = -1 + 3a + 4

2) Subtract 3 from both sides
a + 2a = -3 - 1 + 3a + 4

3) Subtract 3a from both sides
a + 2a - 3a = -3 - 1 + 4

4) Simplify
3a - 3a = -4 + 4
0 = 0

Since 0 = 0 is always true, this equation as an unlimited number of solutions. No matter what you put in for the variable a, it will all cancel out, and you'll get 0 = 0!

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Answer: Infinite number of solutions

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Find the 8th term of the geometric sequence: 1/3, -1, 3

olga55 [171]

Step-by-step explanation:

a= 1/3

common ratio = -3

the 8th term is given by,

$a {r}^{7} = \frac{1}{3} \times {( - 3)}^{7}$

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4 years ago

An airplane's altitude changes -378 feet over 7 minutes. What was the mean change of altitude in feet per minute?

Sveta_85 [38]

<h2>Answer:</h2>

<u>The mean altitude will be</u><u> -54 per minute</u>

<h2>Step-by-step explanation:</h2>

We are given with altitude change as -378 feet over 7 minutes

Now

We need feet per minute

So -378 / 7 will give us the altitude change per minute

-378 / 7 = -54

Therefore the mean change of altitude in feet per minute is -54 per minute

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4 years ago

One day of the week is selected at random. To the nearest tenth of percent, what is the probability that the chosen day is Satur

andriy [413]

Answer:

Step-by-step explanation:

=1/7 X 100

=14.3

I hope this helps a bit

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3 years ago

A sales clerk sold 3 times as many T-shirts as hats last week. The number of belts she sold was 15 more than 1/4 the number of h

artcher [175]

Answer:

777 fewer belts

Step-by-step explanation:

288/4 = 72

72 + 15 = 87

288*3 = 864

864 - 87 = 777

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3 years ago

If you know the answer your a genius at math^

nirvana33 [79]

Answer: I think its B

Step-by-step explanation: hoped this helped :)

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3 years ago