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2 years ago

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Which expression should appear in Line 2?

1 answer:

kipiarov [429]2 years ago

8 0

Answer:

c.

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Help please..............

Alex777 [14]

The answer is rather symbol just combine the like terms! -2X^2 has no like terms for it is the only exponent so cancel out C because it doesn't start with -2X^2. Next we add all variables with X but no exponent so 3X and -5x Add those together to get 3X +-5X which is -2X because the + is cancelled out so ghe equation is 3X-5X which equals -2X so get rid of everything but B. Finally to confirm it is B add all the basic numbers so the five and three to get eight. So (f+g)(x) = -2X^2 -2X + 8. The answer is B. (You guys said it was A so I changed it but now I know I am right.)

5 0

3 years ago

Read 2 more answers

The sum of the square of a number and 34

telo118 [61]

<span>The sum of the square of a number and 34 = </span>x^2 + 34

hope it helps

6 0

3 years ago

Determine which of the given numbers are factors of the polynomial 8x^3-12x^2-6x+9

kotegsom [21]

Sqrt of 3 hope this helps

4 0

3 years ago

A farmer finds that if she plants 50 trees per acre, each tree will yield 80 bushels of fruit. She estimates that for each addit

pashok25 [27]

Answer:

28

Step-by-step explanation:

From the given information:

Let x be the number of trees.

F(x) = (50 +x) (20 - 3x)

F(x) = 1000 - 150x + 20x - 3x²)

F(x) = -3x² - 130x + 1000

Differentiating F(x) with respect to x;

$F'(x) = \dfrac{d}{dx}( -3x^2- 130x + 1000)$

$F'(x) = ( -3(2x)- 130(1) +0)$

F'(x) = -6x -130

Now; we set F'(x) to be equal to zero to determine the critical value;

-6x - 130 = 0

x = - 130/6

Differentiating F''(x) with respect to x

$F''(x) = \dfrac{d}{dx}( -6x- 130)$

$F''(x) = ( -6(1))$

F''(x) = -6 (<0)

Thus; by the second derivative, the revenue function F(x) is maximum when x = -130/6

Therefore, the number of trees she should plant per acre to maximize her harvest is:

50 + x = 50 - 130/6

= 85/3

$\simeq$ 28

Therefore, the number of trees per acre to maximize the harvest is 28

6 0

3 years ago

The average of the first 3 weights was 14 pounds. The average of the next 7 was 4 pounds. What was the overall average of the we

miskamm [114]

Answer:

$Average = 10$

Step-by-step explanation:

Given

$First\ Three = 14$ --- Average

$Next\ Seven= 4$ --- Average

Required

Determine the overall average

Represent the sum of the first three with x.

So:

$\frac{x}{3} = 14$

Solve for x

$x = 14 * 3$

$x = 42$

Represent the sum of the next seven with y.

So:

$\frac{y}{7} = 4$

Solve for y

$y = 4 * 7$

$y = 28$

The overall average is calculated as thus:

$Average = \frac{x + y}{7}$

$Average = \frac{42 + 28}{7}$

$Average = \frac{70}{7}$

$Average = 10$

7 0

3 years ago