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3 years ago

10

Which of these two expressions represent the phrase "five plus two times a number"? A. 5n+2n and 2n+5n B. 5+2n and 2+5n C. 2n+5

and 2n-5 D. 5+2n and 2n+5

1 answer:

Allushta [10]3 years ago

3 0

Answer:

It would be D because you are timing 2 by a number which would have n together

Hope this helped

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Which of the following is a factor of f(x) = 3x3 + 8x2 − 87x + 28? (5 points)

N76 [4]

Answer

(x - 4)

Step by step explanation

To find the factors, plug in the x values in the given equation and see which value of x makes the equation equal to zero.

Here (x - 4) is a factor.

Therefore, x = 4

when we plug in x = 4 in the given expression, we get zero.

Let's check it out.

3(4)^3 + 8 (4)^2 - 87(4) + 28

192 + 128 - 348 + 28

348 - 348

0

The answer is (x - 4)

Thank you.

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3 years ago

Brach and Larue is a home goods store chain, and it is about to introduce a new convection oven that’s expected to sell very wel

zvonat [6]

Answer:

$\$12,465$

Step-by-step explanation:

The functions for cost and revenue are given below:

$Projected \:Revenue,R(x)= -13.85x^2 + 1660x\\$Projected Cost, C(x)=55400 -279x\\Projected Profit = Revenue-Cost=R(x)-C(x)\\=-13.85x^2 + 1660x-(55400 -279x)\\=-13.85x^2 + 1660x-55400 +279x\\P(x)=-13.85x^2 + 1939x-55400$

The profit will be maximized at its <u>line of symmetry,</u> $x=-\dfrac{b}{2a}$ <u />

From P(x), a=-13.85, b=1939

<u>Line of symmetry,</u>

<u /> $x=-\dfrac{b}{2a}=-\dfrac{1939}{2(-13.85)}=70$ <u />

<u>The maximum profit that can be made will occur when x=70</u>

<u /> $P(x)=-13.85x^2 + 1939x-55400\\P(70)=-13.85(70)^2 + 1939(70)-55400\\=\$12,465$ <u />

The maximum profit that can be made form the sales of the oven is $12,465.

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3 years ago

Solve the equation 2/5x-1=9. Complete each step of the solution and check your solution

Fofino [41]

Answer:

x = 25

Step-by-step explanation:

2/5x - 1 = 9

Add 1 to both sides

2/5x = 10

Multiply by 5 on both sides

2x = 50

Divide by 2 on both sides

x = 25

Check the answer:

Plug in 25 for x

2/5(25) - 1 = 9

10 - 1 = 9

9 = 9

The answer is correct.

3 0

3 years ago

Help me solve for the right triangle

AleksAgata [21]

Answers:

B = 50

a = 10.9

c = 17.0

================================================

Explanation:

This is a right triangle, so the acute angles are complementary, meaning they add to 90

B+40 = 90

B+40-40 = 90-40

B = 50

Also, because this is a right triangle, we can use trig ratios to compute the missing sides

tan(angle) = opposite/adjacent

tan(40) = a/13

a = 13*tan(40)

a = 10.908

a = 10.9

cos(angle) = adjacent/hypotenuse

cos(40) = 13/c

c*cos(40) = 13

c = 13/cos(40)

c = 17.0

note: make sure your calculator is in degree mode

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3 years ago

I NEED CORRECT ANSWER

RUDIKE [14]

Answer:

Step-by-step explanation:

Activity 3

Q1) consistent, independent

Q2) inconsistent

Q3) consistent, dependent

Q4) consistent, independent

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3 years ago