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Pani-rosa [81]
3 years ago
10

HELPPPP ASAPPP MARKING BRAINLIEST

Mathematics
1 answer:
Sloan [31]3 years ago
8 0

Answer:

1) a

2) c

3) a

Step-by-step explanation:

1) Subsitute

2.14x - 42.9 = ?

2.14(22.4) - 42.9 = ?

47.936 - 42.9 = ?

= 5.036

2) Factor out

6y^2 + 27y

both have 3 and y in common so ...

3y(2y + 9)  

3) Distribute

12m(m - 3n)

12m * m = 12m^2

12m * -3n = -36mn     the only reason -3 is NOT a positive is b/c it has subtraction sign b4 the number

put it in order:

12m^2 - 36mn

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624,612 rounded to the nearest hundred is
lord [1]

Answer:

624,600

Step-by-step explanation:

624,612

612 rounds to 600

624,600

8 0
3 years ago
Read 2 more answers
Charges competition fees of $250 plus $75 per week for classes. What is the
Nimfa-mama [501]

Answer:

$3,250

Step-by-step explanation:

You take the initial fee of 250 then add 75x40

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3 years ago
Solve pls brainliest
Murrr4er [49]

Answer:

-1, -24

Step-by-step explanation:

-9-(-8)

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-9+8=-1

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6 0
2 years ago
What is BE ?<br> Please explain it in full dont just give me an answer
posledela
There are two methods to solve this problem. One of them is the typical method and the other one is the short-cut. I will explain the shortcut

Short-cut: 
This method is quick and easy, and works with ALL triangles, which is why I suggest you use this. You make proportions. Since the triangles are similar, we can use CPCTC. Thereafter,
\frac{AD}{CE}= \frac{DB}{EB}

Now, you just need to identify the terms, substitute, and solve for the unknown, which would be k. 

\frac{12}{3} = \frac{k+5}{k-7} \\ 12(k-7)=3(k+5) \\ 12k-84=3k+15 \\ 9k=84+15 \\ 9k=99 \\ k=11[/tex]

So we found k, but it is asking for BE. Therefore, plug in the value of k, which is 11, into the expression for BE, which is k-7.

BE=K-7
k=11
BE=11-7
BE=4

Your answer is 4.





5 0
3 years ago
Which is better? (NaruSasu, NaruSaku, NaruHina, NaruSai)
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