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VMariaS [17]
3 years ago
7

1/2 (4a + 10b) = c solve for b Can someone help me on this

Mathematics
2 answers:
Butoxors [25]3 years ago
7 0
Here is the answer I got: B=c/5 - 2a/5
Artyom0805 [142]3 years ago
7 0

1/2 (4a + 10b) = c

Remove the 1/2 by multiplying both sides by 2:

4a + 10b = 2c

Subtract 4a from both sides:

10b = 2c -4a

Divide both sides by 10:

b = (2c-4a)/10

SImplify by the fraction:

b = (c - 2a)/5

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Answer:

66%(technically 0.66 repeating)

Step-by-step explanation:

We need to figure out what percentage of 69 equates to 46. In other words, we need to figure out what percentage <u>times</u> 69 equals 46:

percentage*69 = 46

Now that we formed this equation, we can solve for the percentage as if it was x.

First lets simplfy:

percentage*69 = 46 -- > 69percentage = 46

Now we can solve for x just by getting x alone, which means we must remove the coefficent. We can do this by dividing both sides of the equation by 69:

percentage = \frac{46}{69}

=

percentage=0.66

Putting this into the form of percentage, we must multiply by 100. Since, the percentage form of a decimal is 100 times bigger(moved up 2 decimal places):

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Hope this helps! :3

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3.7

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3 years ago
List the common multiple of 42 and 14 . Help plzzzz 
Alborosie
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3 years ago
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7 0
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