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kenny6666 [7]
3 years ago
13

4a+11-a=2 what does a equal solve and check

Mathematics
2 answers:
kirza4 [7]3 years ago
7 0
4a+11-a=2. You're going to now subtract a from 4a and you get 4a+11=2.

Next, subrtact 11 from 2 and you get 4a=-9.

Divide 9 by for and you get a=9/4 or 1 3/4.
8_murik_8 [283]3 years ago
6 0
You would first simplify the question. 4a-a=3a
3a+11=2
Then you would subtract 11 from both sides.
3a=-9
Then divide 3 on both sides.
a=-3.
You can check by putting it in the equation.
4(-3)+11-(-3)=2
-12+11+3=2
2=2
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The value V of a Porsche 718 Cayman that is t years old can be modeled by V(t) = 420,000(0.965)t (a) What would be worth the car
nordsb [41]

Answer:

<u>A. V (2) = $ 391,114.50</u>

<u>B. t = 7.2 years (rounding to the next tenth) or approximately 7 years, 2 months and 12 days  </u>

Step-by-step explanation:

Given formula:

V(t) = 420,000 * (0.965)^t

A. What would be worth the car′s worth in 2 years?

V(t) = 420,000 * (0.965)^t

We replace t by 2, as follows:

V(2) = 420,000 * (0.965)²

V(2) = 420,000 * 0.931225

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B. In how many years will the car be worth $325,000?

V(t) = 420,000 * (0.965)^t

We replace V(t) by 325,000, as follows:

325,000 = 420,000 * (0.965)^t

325,000/420,000 = (0.965)^t

0.77381 =  (0.965)^t

t = log 0.965(0.7738)  

t = log 0.7738/log 0.965  

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0.4 months = 0.4 * 30 = 12 days

7 0
3 years ago
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