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vladimir2022 [97]
3 years ago
13

What is the answer to this question

Mathematics
1 answer:
stich3 [128]3 years ago
4 0

Answer:

A

Step-by-step explanation:

Given the exponential function

f(t) = 228(0.975)^{t} ← where t is time in years

Substitute t = 20 into f(t), that is

f(20) = 228 × (0.975)^{20} = 228 × 0.60268.... ≈ 137 → A

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Read 2 more answers
Rewrite the equation below so it does not have fractions
S_A_V [24]
<h3>Answer:  4x + 42 = 5</h3>

==========================================================

Explanation:

The fractions we want to eliminate are 2/3 and 5/6. The lowest common denominator (LCD) is 6.

If we multiply both sides by the LCD, then we'll cancel out the fractions. This is because

6*(2/3) = (6/1)*(2/3) = (6*2)/(1*3) = 12/3 = 4

6*(5/6) = (6/1)*(5/6) = (6*5)/(1*6) = 30/6 = 5

So in short, the (2/3)x becomes 4x and the 5/6 becomes 5 after we multiply both sides by the LCD 6.

------------

This is what the steps could look like

\frac{2}{3}x + 7 = \frac{5}{6}\\\\6*\left(\frac{2}{3}x + 7\right) = 6*\frac{5}{6}\\\\6*\left(\frac{2}{3}x\right) + 6*\left(7\right) = 6*\frac{5}{6}\\\\4x + 42 = 5\\\\

6 0
3 years ago
How to solve 2d÷4+6=5+4​
Mars2501 [29]
So, first you’re going to combine any like terms. So, add 4 and 6 and you get 10. Then you do the other side which is 5 plus 4 and you get 9. So now it is 2d÷10=9. Now you can put 2d over 10 multiplied by d in a fraction. A fraction represents division. So it would be 2/10b=9. You can simplify it to 1/5b=9.Now you have to get rid of the fraction so you multiply by its opposite to get rid of it. So multiply by 5 on both sides so you get b=45.
5 0
4 years ago
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