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Lostsunrise [7]
3 years ago
10

Does anyone know the answer?

Mathematics
1 answer:
Serhud [2]3 years ago
8 0

Answer:

6a {}^{2}  - 2c + 2a {}^{2}  - 2c {}^{2}  \\ 8a {}^{2}  - 2c {}^{2}  - 2c

Good luck!

Intelligent Muslim,

From Uzbekistan.

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Plz help what is 8 t.=_______lb.?
larisa86 [58]

Answer:

16,000 lb.

Step-by-step explanation:

For every ton, it equals 2,000 pounds. So to find how many pounds is in 8 tons, just multiply 2,000 by 8. This would give you 16,000 pounds!

This is of course using the U.S. tons, so if you want to convert it for metric tons it would be 17,632 since 1 metric ton = 2204.

I hope this was able to help!

7 0
3 years ago
What is a correct name for the angle shown?
Masteriza [31]

Answer:

the answer is option B. angle S.

when naming an angle we place the vertex of the angle in the middle. here the angle is RST. But that option is unavailable. very often when there are no other angles interfering with the parent angle, we represent it using one letter that is the mid letter, the vertex. here in this case it is S.

4 0
3 years ago
Read 2 more answers
(Calculus help, 25 points, will give brainliest) Find the sum of the sigma notation below.
Andreyy89

\displaystyle\sum_{i=3}^{10}(2i-9)=2\sum_{i=3}^{10}i-9\sum_{i=3}^{10}1

Recall that

\displaystyle\sum_{i=1}^n1=n

\displaystyle\sum_{i=1}^ni=\frac{n(n+1)}2

Your sums start at i=3, so in order to apply these formulas directly, you need to compensate for the missing first two terms:

\displaystyle\sum_{i=3}^{10}1=\sum_{i=1}^{10}1-(1+1)=10-2=8

\displaystyle\sum_{i=3}^{10}i=\sum_{i=1}^{10}i-(1+2)=\frac{10\cdot11}2-3=52

\implies\displaystyle\sum_{i=3}^{10}(2i-9)=2\cdot52-9\cdot8=\boxed{32}

4 0
3 years ago
You are choosing a song for your dance recital. Song A has 11 beats in 10 seconds. Song B has 7 beats in 6 seconds. Which song h
Fittoniya [83]
Song A has 1 .10 beats/second and song B has 1.16 beats/second so it is song a.
8 0
3 years ago
Mariana's retirement party costs $7 for every guest she invites. What is the maximum number of guests there can be if Mariana ca
SCORPION-xisa [38]

Answer: I say it’s 7

Step-by-step explanation: if she can spend $49 and it costs every guest has to pay $7, then the answer is probably 7 since you divide(?)

3 0
4 years ago
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