3 years ago

Justify each step. 15. 2x – 5 = –20 2x = -15 x=_15

1 answer:

Dimas [21]3 years ago

5 0

1st: add 5 to each side
2nd: divide by 2 on each side

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lilavasa [31]

Answer:

224

Step-by-step explanation:

i think you would do 16 X 2 and then times that by 7 which would give the answer as 224

6 0

3 years ago

qwelly [4]

Let x be the number of red fish
3:5 = x:20
3/5 = x/20
(Cross method)
5x = 60
x =12

There are 12 red fish in the fish tank.

7 0

3 years ago

lorasvet [3.4K]

Hello,

$arc=\theta \ * R\\\\
R= \frac{6.28}{1.12} =5,607142857...$ ≈5.61

6 0

3 years ago

Nina [5.8K]

The number of ants in his farm after 12 weeks is 218.

Step-by-step explanation:

Step 1:

It is given that there are 15 ants initially and the ant population increases by 25% each week.

This is an exponential rate of increase that can be modeled by the following equation:

Number of ants after n weeks = Initial number of ants * $(1 + rate of increase) ^{n}$

Step 2:

Rate of increase = 25% = 25 / 100 = 0.25

Number of weeks = 12

Number of ants after 12 weeks = 15* $(1 + 0.25 )^{12}$ = 218.27 (rounded off to 218)

Step 3:

Answer:

The number of ants in his farm after 12 weeks is 218.

6 0

3 years ago

Scrat [10]

It is most likely 14 units so it would be A. I think.

6 0

3 years ago