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3 years ago

Help me please lots of points

Mathematics

2 answers:

lapo4ka [179]3 years ago

8 0

Answer:

i sory i need points

Step-by-step explanation:

leva [86]3 years ago

3 0

7. -40
14. 200

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Solve 2k(-3k + 4) + 6(k2 + 10) =k(4k + 8) - 2k(2k + 5). 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:

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

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3 years ago

PLEASE HELP ILL GIVE BRAINLIEST SHOW WORK

Marina CMI [18]

Answer:

choice 1) $21.90

Step-by-step explanation:

30% of $72.99 = 0.3(72.99) = $21.90

4 0

3 years ago

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Solve log2(6-2x)-log2x=3

Elenna [48]

Assuming you have log in base 2.

Join logarithms (always):

log2(6-2x)-log2(x) = log2( (6-2x/x) )

Then get rid of it! :)

(6-2x)/x = 2^3=8,

Solve the equation:

6-2x=8x ---> 10x=6 ---> x = 3/5.

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3 years ago

What is the slope of the equation y- 5=-X?

tatyana61 [14]

Answer:

-1

Step-by-step explanation:

y-5 =-x

change it to y=mx+b form

y= -x+5 (m is slope = -1)

-1 is your slope

5 0

3 years ago

Which could be the function graphed below?

iren [92.7K]

9514 1404 393

Answer:

(a) f(x) = √x -2

Step-by-step explanation:

The square root function has no horizontal shift, so the expression under the radical is simply x with no added terms. There is only one such answer choice, which also shows the necessary translation downward by an added negative constant.

$f(x)=\sqrt{x}-2$

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3 years ago

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