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Alex17521 [72]
3 years ago
11

What is the value of a in the equation 5 a minus 10 b equals 45, when b equals 3?

Mathematics
2 answers:
Mrrafil [7]3 years ago
8 0

Answer:

15

Step-by-step explanation:

<u>Given:</u>

  • 5a - 10b = 45
  • b = 3,

<u>Finding the value of a, solving the equation, considering the value of b=3: </u>

  • 5a - 10*3 = 45
  • 5a = 45+30
  • 5a= 75
  • a= 75/5
  • a= 15

<u>Correct choice is</u> 15

il63 [147K]3 years ago
4 0

Answer:

B. 15

Step-by-step explanation:

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4 0
3 years ago
The main show tank has a radius of 60 feet and forms a quarter sphere where the bottom of the pool is spherical and the top of t
svetlana [45]

The given radius is = 60 feet

The volume of the sphere is given by = \frac{4}{3} \pi r^{3}

So we will find the volume of the sphere using radius as 60 and pi as 3.14

Volume = \frac{4}{3}*3.14*60*60*60 = 902059.20 cubic feet

As quarter of anything is defined as its one-fourth part, so here the volume of the quarter of sphere can be calculated by finding one fourth of the calculated volume.

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3 0
3 years ago
Help plz I'm desperate ​
lutik1710 [3]

<u>Anna:</u>

1st month = 18 + \frac{3}{4} = 18\frac{3}{4} inches

2nd month = 18\frac{3}{4} + \frac{3}{4} = 19\frac{1}{2}

3rd month = 19\frac{1}{2} + \frac{3}{4} = 20\frac{1}{4}

4th month = 20\frac{1}{4} + \frac{3}{4} = 21

5th month = 21 + \frac{3}{4} = 21\frac{3}{4}

<u>Grace:</u>

Because Anna is \frac{9}{4} inches shorter than Grace, we can start the count from the third month:

1st month = 20\frac{1}{4}

2nd month = 21

3rd month = 21\frac{3}{4}

4th month = 21\frac{3}{4} + \frac{3}{4} = 22\frac{1}{2}

5th month = 22\frac{1}{2} + \frac{3}{4} = 23

7 0
3 years ago
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