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3 years ago

12

Please help me with all of them

1 answer:

Natali5045456 [20]3 years ago

5 0

Answer:

first is B second is C and Third is E

Step-by-step explanation:

because it's right

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Solve <br><br> 2k(-3k + 4) + 6(k2 + 10) =k(4k + 8) - 2k(2k + 5). <br><br> Check your solution.

Artist 52 [7]

Answer:

$k=\frac{-52}{18} \approx -2.89$ (2dp)

Step-by-step explanation:

$2k(-3k + 4) + 6(k^2 + 10) =k(4k + 8) - 2k(2k + 5)$

Expand brackets:

$-6k^2+8k+6k^2+60=4k^2+8-4k^2-10k$

simplify:

$8k+60=8-10k$

Collect terms:

$18k=-52\\$

Rearrange for k:

$k=\frac{-52}{18}$

4 0

3 years ago

Find the product.<br><br> -4x(x2+8)<br><br> PLEASE HELP!!! ASAP!!!

Paraphin [41]

Answer:

$-4x^3 - 32x$

Step-by-step explanation:

We can multiply -4x by both terms inside the parentheses.

$-4x \cdot x^2 = -4x^3$

$-4x \cdot 8 = -32x$

Hope this helped!

7 0

4 years ago

Read 2 more answers

I need to know number one

vlada-n [284]

I hope this helps you

6 0

4 years ago

What is the slope of the line given by the equation y = -5x? Enter your answer as an integer or fraction in lowest terms. BTW ca

faust18 [17]

Answer:

slope = - 5

Step-by-step explanation:

given the equation of a line in the form

y = mx ← m is the slope

y = - 5x is in this form with slope m = - 5

7 0

3 years ago

The two figures are proportional. Find the value of x.

Dmitriy789 [7]

Answer:

C. 30in

Step-by-step explanation:

$\frac{36}{12} = \frac{x}{10}$

x = 30

4 0

3 years ago