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docker41 [41]
4 years ago
10

How to do problem with variable on both sides

Mathematics
1 answer:
Sauron [17]4 years ago
7 0
Example problem:
2x+58=5x-2

First we need to get the variable on one side so we can do that by subtracting 2x from both sides.

58=3x-2

Then we need to isolate our variable to make it by itself on one side. We can do that by adding 2 to both sides.

60=3x

Finally divide each side by 3 and you end up with x=30.
(If you end up with something like 30=30 that means there are infinite solutions. If you end up with something like 24=30 there are no solutions.)

I hope this helps! If you have any questions you can reply and I will try to get back as soon as possible.

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Options 1,2,3 or4?<br><br> Help!<br> Last one I swear!
lapo4ka [179]

Answer:

option 3 = 3.75

Step-by-step explanation:

x is 3.75

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8 0
3 years ago
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PLEASE HELP LAST PROBLEM I NEED HELP ON (Homework Help)
V125BC [204]

Answer:

a

Step-by-step explanation:

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3 years ago
A library has 12,500 fiction books and 19,000 nonfiction books.
valentina_108 [34]

Answer:

1,260 books (or C)

Step-by-step explanation:

1. 2/5 of fiction (12,500) are out, so 5,000 are out

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3. Total books checked out are 12,600

4. 1/10 of checked out books are due this week, so 1,260 books (10%)

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3 years ago
The average number of mosquitoes in a stagnant pond is 80 per square meter with a standard deviation of 12. If 36 square meters
svp [43]

Answer:

a) 18.4%

Step-by-step explanation:

Assuming a normal distribution, the z-score (z) for the probability of the average of the mosquitoes count being 'X'  is given by:

z(X)=\frac{X-\mu }{\frac{\sigma}{\sqrt{n}}}

Where 'μ' is the distribution mean, 'σ' is the standard deviation and 'n' is the number of square meters chosen.

For X = 81.8 and n=36:

z(X)=\frac{81.8 - 80}{\frac{12}{\sqrt{36}}}\\z(X)= 0.9

A z-score of 0.9 is equivalent to the 81.59 th percentile in a normal distribution.

Therefore, the probability (P) that the average of those counts is more than 81.8 mosquitoes per square meter is:

P= 100\% - 81.59\%\\P=18.41\%

8 0
3 years ago
Please help me with this it’s due today .
USPshnik [31]

For question 1:

Since each person is going to eat 1/4 of pizza and there are two of them, there are going to be 8 slices. There are 5 people eating, that's 5 slices gone, leaving 3.

It would be <u>D.) 3/4 pizza</u>

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three people order the same meal. Now, if I'm correct, the meal total is AFTER the coupons were used. so that would bring total cost up to $30.75.

Divide that by 3 for all three friends:

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7 0
3 years ago
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