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AfilCa [17]
3 years ago
13

3/5b-2+7b-12-2/5b+14 ​

Mathematics
1 answer:
stiv31 [10]3 years ago
4 0
The answer is 7 1/5 b

EXPLANATION:

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HELP ME PLEASE i beg u
lorasvet [3.4K]

Answer:

3. -2

4. 15

5. 0

6. 1

7. 0

Hope this helps!!! If so please give brainliest

7 0
3 years ago
Read 2 more answers
The volume of a cylinder of radius 3r and height 6r is given by TT(3r)2(6r). Simplify the expression.
OLga [1]

Answer: \pi 36r^{2}

Step-by-step explanation:

ALRIGHT ARE YOU READY FOR EPIC MATH TIME?

because i know i am. so lets get this bread.

WATCH: we have \pi (3r)2(6r)

interesting... that first character is called pi. maybe i should have said, "lets get this pi".

so now lets do some algebra. i am going to work from right to left. lets multiply 6r by 2. that gives us 12r. now we have... \pi (3r)(12r)

WE ARE MAKING EPIC PROGRESS, AREN'T WE?

lets multiply 12r by 3r. then we have....

\pi 36r^{2}

notice how i multiplied 12 by 3 and also r by r (which gives 36 and r^{2} respectively)

so your simplified expression is: \pi 36r^{2}

6 0
3 years ago
I need help pls I only have 3 mins!!
KatRina [158]

Answer:

First one is 6 16/21

Second one is 3 14/15

Step-by-step explanation:

3 0
3 years ago
Recall that the volume of a sphere is given by the formula V = 4/3pi to the 3rd
Kisachek [45]

9514 1404 393

Answer:

  1. (256/3)π ft³

  2. 33.49 ft³

Step-by-step explanation:

1. Put 4 ft into the formula where r is, then simplify.

  V = (4/3)π(4 ft)³ = (256/3)π ft³

__

2. The radius is half the diameter, so is 2 ft. Put that in the formula, along with the value for π, and do the arithmetic.

  V = (4/3)(3.14)(2 ft)³ ≈ 33.49 ft³

4 0
3 years ago
The Ratio of boys to girls in Martin Middle school is 3/2. what is the percent of the entire school is boys?
Llana [10]

3+2=5

5x=100%

x=20 (divide)

20*3=60

60% are boys, 40% are girls

6 0
3 years ago
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