3 years ago

Please explain how this is the right answer!!

Mathematics

1 answer:

Kisachek [45]3 years ago

6 0

Answer:

Step-by-step explanation:

------

x^-2

The negative moves it from the denominator to the numerator

x^2

Replace x with 7

7^2

You might be interested in

Find the inverse f(x)= 3x-5/2

dlinn [17]

I hope it helps you get it right

8 0

3 years ago

a dish has 21,245,673 bacteria in it. The population of bacteria will decline by 80% every day. How many bacteria will be presen

Ivahew [28]

Answer:

33993.0768

Step-by-step explanation:

You can multiply the number of bacteria by (0.2^4). The 0.2 is for the 20% that left after each day. The (^4) is for the 4 days that have passed.

6 0

3 years ago

What is the solution to the following equation?

Pachacha [2.7K]

Answer:

x = 4

Step-by-step explanation:

8x - 9 = 6x - 1

Bring variables to the left side, whereas numbers to the right.

8x - 6x = - 1 + 9

2x = 8

x = 8 / 2

x = 4

3 0

3 years ago

Help me with this question

finlep [7]

Answer:

I THINK C

Step-by-step explanation:

I THINK.

4 0

3 years ago

Read 2 more answers

There are 34 Pre-K children and 29 kinder garden children on the playground, some boys and some girls. The ratio of boys to girl

Natali [406]

There are 27 boys on the playground.

Step-by-step explanation:

No. of Pre-K children = 34

No. of kindergarten children = 29

Total no of children = 29+34 = 63

Ratio of boys to girls = 3:4

Total ratio = 3+4 = 7

Therefore,

boys proportion = $\frac{3}{7}$

Total number of boys = $\frac{3}{7}\ of\ total\ number\ of\ children$

$Total\ number\ of\ boys = \frac{3}{7} *63\\Total\ number\ of\ boys = \frac{189}{7} \\Total\ number\ of\ boys = 27$

There are 27 boys on the playground.

Keywords: Proportion, division.

Learn more about proportion at:

#LearnwithBrainly

5 0

3 years ago