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MrRissso [65]
2 years ago
10

Solve for a. 7a-2b=5a+b

Mathematics
2 answers:
velikii [3]2 years ago
7 0
8.5b.
7a= 5a +3b
-5a -5a
2a = 3b
/2
a= 1.5b
Solve by substitution and you get;
8.5b=8.5b
Because of the lack of constants in the equation there isn't a definite answer.
almond37 [142]2 years ago
4 0

Answer:

a = 3/2b

Step-by-step explanation:

 7a - 2b = 5a +   b

<u>       +2b          + 2b</u>

 7a = 5a + 3b

<u>-5a    -5a </u>

2a  =  3b

<u>/2      /2</u>

a = 3/2b

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KonstantinChe [14]
In order to find a fraction, We know that a percentage is out of a 100. This means we can now place our fraction as:

38/100

In order to find the actual fraction, we will want to simplify. Lets find our least common factor and work down from there. Since we know that 2 can go into both of them, lets reduce by 2.

This means our fraction will now look like: 

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Since 19 is a prime number and cannot be divided by anything but 1 and itself, we know that this is our simplified form. 

This means:

19/50 is the fraction equivalent to 38%. 
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3 years ago
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Select the correct answer.<br> How can you write the expression 2 − (p + 6) in words?
ololo11 [35]

The written form of the mathematical expression as given in the task content; 2 − (p + 6); is; the difference between 2 and the sum of p and 6.

<h3>What is the written form of the mathematical expression given in the task content?</h3>

It follows from the task content that the expression given is; 2 − (p + 6).

Since, the expression in the parentheses can be expressed in words as the sum of; p and 6.

Hence, it follows that the whole expression can be expressed as the difference between 2 and the sum of p and 6.

Read more on expression in words;

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1 year ago
What is 6.55 rounded to the nearest tenth
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6.6 is the answer to that
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3 years ago
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Shen borrowed $8000 at a rate of 17%, compounded quarterly. Assuming he makes no payments, how much will he owe after 6 years?​
nevsk [136]
224,640
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7 0
2 years ago
6.
larisa86 [58]

A. Every month Population will increase by a factor of 0.84%.

B.  Every 3 months Population will increase by a factor of 2.5%.

C. Increase in population in every 20 months is 10% + 6.72% = 16.72%.

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

Here, we have  number of employees in a company has been growing exponentially by 10% each year. So , If we have population as x in year 2019 , an increase of 10% in population in 2020 as  x + \frac{x}{100}\times10 which is equivalent to \frac{11x}{10}.

<u>A.</u>

For each month: We have 12 months in a year and so, distributing 10% in 12 months would be like \frac{10}{12}  = 0.84 . ∴ Every month Population will increase by a factor of 0.84%.

<u>B.</u>

In every 3 months: We have , 12 months in a year , in order to check for every 3 months  \frac{12}{3} = 4 and Now, Population increase in every 3 months is \frac{10}{4}  = 2.5.  ∴ Every 3 months Population will increase by a factor of 2.5%.

<u>C.</u>

In every 20 months: We have , 12 months in a year in which increase in population is 10% . Left number of moths for which we have to calculate factor of increase in population is 20-12 = 8. For 1 month , there is 0.84% increase in population ∴ For 8 months , 8 × 0.84 = 6.72 %.

So , increase in population in every 20 months is 10% + 6.72% = 16.72%.

5 0
3 years ago
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