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Ipatiy [6.2K]
3 years ago
11

Solve the equationr-3 = 3(r- 5)​

Mathematics
1 answer:
avanturin [10]3 years ago
4 0

Answer:

<em>r=6</em>

Step-by-step explanation:

r-3=3(r-5)

First distribute:

r-3=3r-15

Then subtract r on both sides

-3=2r-15

Then add 15 on both sides

2r=12

Divide by 2 to isolate r

r=6

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A sphere has a radius of 6 meters. A second sphere has a radius of 3 meters. What is the difference of the volumes of the sphere
Andrew [12]
Since we are dealing with VOLUME, when you increase an amount, we CUBE the difference. 2^3 = 8
The sphere that has 2 times the radius has 8 times the volume.



3 0
4 years ago
You have 2 different savings accounts. For Account​ A, the simple interest earned after 9 months is ​$6.94. For Account​ B, the
asambeis [7]

Answer:

Step-by-step explanation:

The formula for simple interest is expressed as

I = PRT/100

Where

P represents the principal or initial amount of money invested.

R represents interest rate

T represents time

Considering the investment on account A,

I = $6.94

R = 3.7%

T = 9 months = 9/12 = 0.75 years

6.94 = (P × 3.7 × 0.75)/100 = 0.02775P

P = 6.94/0.02775 = $250

Considering the investment on account B,

I = $13.80

R = 2.3%

T = 18 months = 18/12 = 1.5 years

13.8 = (P × 2.3 × 1.5)/100 = 0.0345P

P = 13.8/0.0345 = $400

To determine the account that earned more interest in the first month,

250/9 = $27.8

400/18 = $22.2

Account A earned you the most interest the first​ month because $27.8 is higher than $22.2

3 0
4 years ago
What is 16.2 simplified (and 121 simplified to)
Cerrena [4.2K]

Answer:

16.2 = \frac{81}{5} and 121 = \frac{121}{1}

Step-by-step explanation:

16.2 can be simplified to its fraction form, which is \frac{81}{5}

  • 16+\frac{2}{10} =\frac{81}{5} which is 16.2

121 is already simplified since it is a whole number, but its fraction form would be \frac{121}{1}

  • 121+\frac{0}{10} =121 which is 121

-----

<em>(I hope this helped & good luck! <3)</em>

7 0
3 years ago
1.) -12/6 is a natural, whole, integer, rational or irrational
Norma-Jean [14]

Answer:

Rational

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Makes no sense??? Last question
trapecia [35]
4 3/4 divided by 5/8 equals 19/4 divided by 5/8 equals 19•8/4•5 equals 152/20 equals 7 3/5

6 0
4 years ago
Read 2 more answers
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