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yaroslaw [1]
3 years ago
6

Please help these are not easy for me

Mathematics
1 answer:
Pavel [41]3 years ago
7 0

Answer:

12a^2 - 9a + 5

Step-by-step explanation:

(5a^2 - 6a - 4) - (-7a^2 + 3a - 9)

5a^2 + 7a^2 = 12a^2

-6a - 3a = -9a

-4 + 9 = 5

12a^2 - 9a + 5

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Answer:

12:15

Step-by-step explanation:

girls:boys

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comment if u need me to explain more :)

6 0
3 years ago
Identify the angle relationship. Which equation can be used to solve for x?<br> (4x + 1)<br> 170
Mice21 [21]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
Please help me with this question​
mash [69]

Answer:

angle AOD = 90⁰

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now

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7 0
3 years ago
At a bus station, buses depart at a rate of 3 every 10 minutes. At this rate, how many buses would you expect to depart in one h
Tom [10]

Answer:

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5 0
4 years ago
Read 2 more answers
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Ad libitum [116K]

Answer:

0.0008228 to standard form =

8.228 x 10^-4

4 0
4 years ago
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