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zmey [24]
3 years ago
15

Evaluate 3x^2+2x-5 when x=4

Mathematics
2 answers:
pickupchik [31]3 years ago
7 0
3x4 is 12x12=144+
2x4=8
8-5=3
144+3
147
Please mark me as brainlest
RUDIKE [14]3 years ago
4 0
But I could be around
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X/-5=-20<br><br> A -100 or 100<br> B -4 or 4<br> C 100<br> D no solution
alexgriva [62]

Move the negative sign to the left

-x/5 = -20

Multiply both sides by 5

-x = -20 × 5

Simplify 20 × 5 to 100

-x = -100

Multiply both sides by -1

<em>x = 100</em>

<u>C. 100</u>

4 0
3 years ago
Read 2 more answers
What are the solutions of this quadratic equation ? x ^ 2 = 16x - 65 Substitute the values of a and b to complete the solutions
Karo-lina-s [1.5K]

Answer:

x = 8 + \sqrt{58} or x = 8 − \sqrt{58}

Step-by-step explanation:

Hope This Helps

Please Mark Brainliest if correct

I do Not Have Time To Explain I'm SO Sorry

5 0
3 years ago
The manufacturer of a weight-training bench spends $15 to build each bench and sells them for $32. The manufacturer also has fix
nasty-shy [4]

Answer:

Step-by-step explanation:

C(x) = 15x + 25,500....cost function

R(x) = 32x .....revenue function

break even point (when they are equal)....so set them equal and solve for x

15x + 25,500 = 32x

25,500 = 32x - 15x

25,500 = 17x

25,500 / 17 = x

1500 = x.......so the break even point is when 1500 benches are sold

15x + 25,500 =                                   32x =

15(1500) + 25,500                              32(1500) =

22,500 + 25,500                                48,000

48,000

and after selling 1500 benches, they will both equal $48,000

7 0
3 years ago
How many 1/5 liter glasses can fill with 1 1/2 liter bottle of water?
levacccp [35]

Answer:

7 glasses/bottles :)

6 0
3 years ago
Find the surface area of the pyramid. The side lengths of the base are equal.
Pachacha [2.7K]

Answer:

A = 177.46

Step-by-step explanation:

A = lw + l\sqrt{(\frac{w}{2})^{2} + h^{2}} + w \sqrt{(\frac{l}{2})^{2} + h^{2}

A = 6*6+6root((6/2)^2+11.4^2)+6root((6/2)^2+11.4^2)

A = 177.46

4 0
2 years ago
Read 2 more answers
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