13 = 2f + 5
i don't know how to solve this

Answers

Answer 1

Answer: Simplifying13 = 2f + 5
Reorder the terms:13 = 5 + 2f
Solving13 = 5 + 2f
Solving for variable 'f'.
Move all terms containing f to the left, all other terms to the right.
Add '-2f' to each side of the equation.13 + -2f = 5 + 2f + -2f
Combine like terms: 2f + -2f = 013 + -2f = 5 + 013 + -2f = 5
Add '-13' to each side of the equation.13 + -13 + -2f = 5 + -13
Combine like terms: 13 + -13 = 00 + -2f = 5 + -13-2f = 5 + -13
Combine like terms: 5 + -13 = -8-2f = -8
Divide each side by '-2'.f = 4
Simplifyingf = 4

SO, f = 4

13 = 2 × 4 + 5

Hope I helped:P

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Two glasses together contain 280 mLof water. The first glass contains 80 ml more than the second glass. How much water does the first glass contain?

Answers

x - 1st glass
y - 2nd glass

$x+y=280\n x=y+80\n\n y+80+y=280\n 2y=200\n y=100\hbox{ ml}\n\n x=100+80\n x=180\hbox{ ml}$

Suppose a population has a doubling time of 25 years. By what factor will it grow in 25 years? 50 years? In 100 years?

Answers

Answer:

2,4, and 8.

Step-by-step explanation:

If the population has a doubling time of 25 years, that means that in 25 years the population will double. So for 25 years, the factor will be 2. For 50 years, the factor would be 2x2, which is 4. For 100 years, it is 4x2 which is a scale factor of 8.

What is 83,640,000 in scientific notation

Answers

$83,640,000 = 8.364 * 10^7$

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Answer:

83.64 × 10^6

Step-by-step explanation:

10^6 = 1,000,000

83.64 × 1,000,000 = 83,640,000

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What is 0.689 in word form

Answers

six hundred eighty nine thousandths

HELP ME PLSSSSSSS!!!!!!

Answers

Answer:

Step-by-step explanation:

the answer would be C, or y = 0.125x + 625 because in the problem, it says that the store would require an upfront payment of $25 PLUS $50 a month, then 12.5% interest at the end of the year, then it asks what the equation would be after 12 months. SO we know that is a year (since there are 12 months in a year) so we would multiply that by number by the $50 we would have to pay a month which would look like this: 12 months x $50 a month = $600. then, we would add the initial $25 dollars, which would give us a total of $625 which we'd add to the equation. next, if we look at 12.5% and then at our answer choices, we can see that they converted the percent to a decimal. 12.5% is equivalent to 0.125, therefore our final answer is C!

i hope this helps :D

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