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lana [24]
3 years ago
11

Which monomials are factors of -21a^2?

Mathematics
2 answers:
pickupchik [31]3 years ago
8 0
There are many pairs you could do, but I'm going to choose this one:
(-3a)(9a)

You can multiply them together, and get (that's how you know if they are factors):
(-3a)(9a) = -21a^2

Hope this helped!
Neporo4naja [7]3 years ago
8 0

Answer:

the answer is 3a^2

Step-by-step explanation:

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Move triangle ABC so it lies on top of triangle DEF, triangle GHI, and triangle JKL. How many units do you have to move triangle
dusya [7]

Answer:

See explanation

Step-by-step explanation:

The question is incomplete, as the diagram of coordinates of the three triangles are not given.

A general explanation is as follows:

First, record the coordinates of the corresponding points of the three triangles.

For instance; In triangles ABC, DEF and GHI; A, D and G are corresponding points.

Now, assume the coordinates are:

A = (1,1)

D = (1,5)

G= (-2,1)

Point D is 4 points to the right of A;

i.e.

D =(1,1+4) = (1,5)

Hence, ABC will be moved 4 units right to lie on DEF

Similarly, point G is 3 units down of A

i.e.

G =(1-3,1) = (-2,1)

Hence, ABC will be moved 3 units down to lie on GHI.

5 0
3 years ago
If x=9 and y=−3, evaluate the following expression:20−5y+2x
pentagon [3]

Answer:

53

Step-by-step explanation:

20-5y+2x

20-5(-3)+2(9)

20--15+18

cancel out the negative signs

20+15+18

=53

4 0
3 years ago
Read 2 more answers
A farmer will divide a 1/4 acre plot of land into three equal-sized sections what will be the size of each section?
Natalija [7]
1/4:3= 1/4•1/3=1/12acre - size of each section

1/2•1/5=1/10yard
8 0
3 years ago
Read 2 more answers
Help me please thank you
vfiekz [6]

First one reflection

Second rotation

Third ?

Fourth translation

3 0
3 years ago
Read 2 more answers
Plz tell me how u got it and hurry please
Studentka2010 [4]
Because the shape is a cube, we know that all sides must be 5cm. To find the area of a side, you do base × height, so 5 × 5 = 25. If you look at the net, you'll notice that there are 6 faces, which means you have to do 25 × 6 = 150cm^2. I hope this helps!
8 0
3 years ago
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