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Crank
3 years ago
15

Find the value of the expression 4a^4-2b^2+40 when a = 2 and b=7

Mathematics
1 answer:
Sonbull [250]3 years ago
6 0

6 would be your answer

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Write the equation of a line that is parallel to y = --x + 7 and that passes through the point (-4,1).
nordsb [41]

Answer:

slope: -1

y - 1= -(x + 4)

y - 1 = -x - 4

y = -x - 3

6 0
3 years ago
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In 2007, there were more than 8.14 million cars for sale. Over the next 3 years, the number of cars decreased by 23%. Write an e
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Answer:

c = 8.14 million×(0.9166)^t

4.83 million  

Step-by-step explanation:

Data:

  t = y - 2007

c₀ = 8.14 million

c₃  = 23 % less than c₁

Part 1. Calculate c₃

c₃ = c₀(1 - 0.23) = 0.77c₀

Part 2. Calculate r

      c₃ = c₀r^t

0.77c₀ = c₀r³

   0.77 = r³              Divided each side by c₀

         r = 0.9166     Took the cube root of each side

The explicit decay model is c = 8.14 million×(0.9166)^t

Part 3. Prediction

t = 2013 - 2007 = 6

c = c₀r^t = 8.14 million×(0.9166)⁶ = 8.14 million × 0.5929 = 4.83 million

The model predicts that there will be 4.83 million cars for sale in 2013.

7 0
3 years ago
How would you graph this??<br><br> need help fast
statuscvo [17]

Answer:

There is no graph .... Please next time add one :)

Step-by-step explanation:

8 0
3 years ago
If f(x) = 3x2 – 4 and g(x) = 2x - 6, what is g(f(2))?
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Answer:

10

Step-by-step explanation:

find out f(2)

f(2)= (3×2×2) - 4= 8

then g(8) = 16 - 6= 10

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3 years ago
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