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FrozenT [24]
4 years ago
15

Find the value of 4x^2 - 3x + 5 when x = -2

Mathematics
1 answer:
salantis [7]4 years ago
3 0

4(-2)^2 - 3(-2) + 5

4(4) - (-6) + 5

16 + 6 + 5

22 + 5

<h3>27</h3><h3>The value of 4x^2 - 3x + 5 when x = -2 is 27.</h3>
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goldfiish [28.3K]

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Soloha48 [4]
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4 years ago
Aidan has 20 ft of fence with which to build a rectangular dog run. What is the maximum area he can enclose? Enter your answer i
irina1246 [14]
<h2>Maximum area is 25 m²</h2>

Explanation:

Let L be the length and W be the width.

Aidan has 20 ft of fence with which to build a rectangular dog run.

         Fencing = 2L + 2W  = 20 ft

                     L + W = 10

                      W = 10 - L

We need to find what is the largest area that can be enclosed.

     Area = Length x Width

      A = LW

       A = L x (10-L) = 10 L - L²

For maximum area differential is zero

So we have

      dA = 0

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        L = 5 m

      W = 10 - 5 = 5 m

Area = 5 x 5 = 25 m²

Maximum area is 25 m²

7 0
3 years ago
The members of the basketball team ordered 5 tuna sandwiches at $3.99 each, 5 fish tacos at $2.75 each, 3 salads at $2.70 each,
Oliga [24]

Firstly, $3.99 × 5 = $19.95

Second, $2.75 × 5 = $13.75

Third, $2.70 × 3 = $8.1 (Since it is just $8.1 that won't make sense so we'd add a 0 so It's $8.10.)

Then we do the last one which is 13 × $0.89 = $11.57.

So now since we are done multiplying we can add it all up.

The answer is $53.37 when we finish adding it up.

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7 0
3 years ago
R=10(a+b) solve for b?
IrinaVladis [17]

Answer:

b=r/10 -a

Step-by-step explanation:

7 0
3 years ago
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