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STALIN [3.7K]
3 years ago
9

If k = -3 what is the value of k + (2k - 10) ? A. –19 B. –7 C. 1 D. –14

Mathematics
1 answer:
gladu [14]3 years ago
3 0

Answer:

A

Step-by-step explanation:

We have the expression k+(2k-10)

We want to find the value when k is -3. So, substitute -3 for k and evaluate:

\Rightarrow (-3)+(2(-3)-10)

Multiply:

=-3+(-6-10)

Subtract:

=-3+(-16)

Add:

=-19

Therefore, our answer is A.

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PLEASE ITS DUE SOON HELP AGGGGGGGGGGG IM STRESSING
inna [77]

Answer:

B

Step-by-step explanation:

You have to add 7 to both sides to isolate the variable

4 0
3 years ago
50 POINTS + BRAINLIEST
Vedmedyk [2.9K]
X + 2y = 6
2y = -x + 6
  y = -1/2 x + 3 so slope = -1/2

parallel lines  has same slope = -1/2
perpendicular lines slope is opposite and reciprocal so slope = 2  
if slope not equal either -1/2 or 2 then neither.

y = -1/2 x - 5 ....m= - 1/2....  parallel

-2x + y = -4
          y = 2x - 4...m = 2 ....perpendicular

-x + 2y = 2
2y = x + 2
y = 1/2 x + 1 ...m = 1/2 ...neither

x + 2y = -2
2y = -x - 2
 y = -1/2 x - 1 ...m = -1/2 .....parallel

hope it helps
3 0
3 years ago
Read 2 more answers
20 points!!!
UkoKoshka [18]
150. 

You can read the uppermost point on the graph which is pretty much that point. 
4 0
3 years ago
Read 2 more answers
The number that, when increased by 30% equals 78
Arlecino [84]

Answer:

60

Step-by-step explanation:

x + 0.30x = 78

1.30x = 78

x = 60

3 0
3 years ago
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The question in the image.
GREYUIT [131]

Answer:

500 boxes

Step-by-step explanation:

<em>hey there,</em>

<em />

< Since "p" stands for profits, change "p" to 0 (since the question says 0 profits).

Here is how your equation would look like:

0 = -n^2 + 300n + 100000

Pretend like "n" is "x" since that is the variable we are trying to find here.

Solve for "n". Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

"n" actually ends up equaling 500, -200.

Obviously, negative can't be the answer because you can't have a negative amount of boxes. So 500 boxes would be your answer. 200 CAN'T be your answer <em>either </em>because it is a negative!! >

<u>Hope this helped! Feel free to ask anything else.</u>

6 0
3 years ago
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