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Sever21 [200]
2 years ago
11

Help please I don’t know what to do

Mathematics
2 answers:
Zepler [3.9K]2 years ago
6 0

Answer:

B

Step-by-step explanation:

Combine Like terms

sammy [17]2 years ago
5 0

Answer:

The answer is letter B

Step-by-step explanation

Simply combine like terms in which

-2x^2 + 7x^2 = 5x^2

8x + 4x = 12x

-9 + 2 = 7

So we come up with the answer of the option letter B

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I AM SO STESSED ILL GIVE 13 POINTS FOR THE RIGHT ANSWER!!!!!!!
Blizzard [7]

The coordinates of the midpoint are (-6,3)

6 0
3 years ago
Math help pls, thank you :3
timurjin [86]

Answer:

- question 2 answer is C. (-1,7) and (6,28)

- question 3 answer is A. it is possible for a system of equations composed of linear function and a quadratic function to have 3 solutions.

- question 4 answer is (1,6)

P.s. if any question is wrong then I'm sorry. :(

Step-by-step explanation:

question 4

y=2x^2-5x+9

y= 2x^2+5x-1

y= 2x^2-5x+9=2x^2+5x-1

x=1

y= 2×1^2+5×1-1

y=6

7 0
3 years ago
Find the perimeter of the following shapes.
DerKrebs [107]

Answer:

4. (a) = 12 m

   (b) = 27 cm

   (c) = 24 mm

   (d) = 18 km

   (e) = 10 m

   (f) = 36 cm

Step-by-step explanation:

Perimeter is sum the distance round a figure.

if a shape has those, they signify that the shape has two side that are equal

a)  4 + 4 + 2 + 2 = 12. The top part is equal to the bottom part signified by those two lines. And the left is equal to the right .

b)  10 + 10 + 7 = 27

c) 5 + 5 + 8 + 6 = 24

d)  3 + 3 + 6 + 6 = 18

e) 2.5 + 2.5 + 2.5 + 2.5 = 10

f) 12 + 7 + 7 + 5 + 5 = 36

If you need any clarification or more explanation pls do mention in the comment section. i would like to help more.

Hope this helps and if it does pls mark as branliest answer thx.

6 0
3 years ago
What is the total of the interior angles of a nonagon?
Naddik [55]

Answer:

the answer is 1260 degrees

pleases mark me the brainliest!

8 0
3 years ago
Read 2 more answers
Need Help With this question
Sidana [21]

Answer:

Area of ΔDEF = 12 in²

Step-by-step explanation:

Since they are similar, we have to find the scale factor

Scale Factor = \frac{Side OfDilated Triangle}{Side of Original Triangle}

Scale Factor = 4/2

Scale Factor = 2

<u><em>This means The area of ΔABC is 2 times the area of ΔDEF</em></u>

So,

ΔABC = 2(ΔDEF)

Where Area of ΔABC = 24 in²

24 = 2(ΔDEF)

Dividing both sides by 2

=> Area of ΔDEF = 12 in²

4 0
3 years ago
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