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g100num [7]
2 years ago
9

What is the answer for 2a x -a?

Mathematics
1 answer:
Verizon [17]2 years ago
6 0

Answer:

-2a²

Step-by-step explanation:

The question is  2a × -a

This means 2a(-a)

= -2×(a×a)

=-2(a²)

=-2a²

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Agata [3.3K]

Answer:

when the 9x moved to the other side he didnt change the sign

Step-by-step explanation:

-8x +32 = 9x-9

-9x - 8x + 32 = 9

5 0
2 years ago
Graph AB¯¯¯¯¯¯¯¯ with endpoints A(−6, −1) and B(−5, 3) and its image after the composition.
Alona [7]

Answer:

<h3>-10⇜</h3>

Step-by-step explanation:

AB=-6×-5÷-1×3

AB= 30÷-3

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7 0
2 years ago
Subtract 16 L 18 CL 9 ml from 85 L
harkovskaia [24]

Answer:

  (1)  68.811 L

Step-by-step explanation:

The amount being subtracted is ...

  16 + 0.18 + 0.009 = 16.189 . . . . liters

The difference is ...

  85.000 -16.189 = 68.111 . . . liters

__

<em>Additional comment</em>

cL is the SI unit "centiliters." The prefix "centi-" mean 1/100 or 0.01 units. Then 18 cL = 18 × 0.01 L = 0.18 L.

mL is the SI unit "milliliters." The prefix "milli-" means 1/1000 or 0.001 units. Then 9 mL = 9 × 0.001 L = 0.009 L.

8 0
2 years ago
Ming has 15 quarters, 30 dimes, and 48 nickels. He wants to group his money so that each group had the same number of each coin.
Colt1911 [192]
Find the greatest common factor. In this case it is 3. Divide each group by 3.
15÷3=5 quarters
30÷3=10 dimes
48÷3=16 nickels
Next count them by the coin's value:
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10 × 0.10 = $1
16 × 0.05 = $0.80
Add them up:
= $3.05 in each group and there are three groups.

So, the greatest number of groups that he can make is 3; there will be 5 quarters, 10 dimes, and 16 nickels in each group, which is worth $3.05 in each group.
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3 years ago
Is table salt an Electrolyte?​
STatiana [176]

Answer:

v

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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