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3 years ago

9

PETS Becky wants to buy some fish for her aquarium. She has $20 to spend and the fish cost $2.50 each. Write and solve an inequa

lity to find how many fish Becky can afford.

1 answer:

IgorLugansk [536]3 years ago

5 0

2.50x must be equal or less than 20

x=8

8 fish

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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

Maurinko [17]

Answer:

616 square centimeters

Step-by-step explanation:

Area of a circle is equal to pi × r^2. In this case, they have asked that you substitute 3.14 or 22/7 for pi, so I will be using 22/7, instead.

Diameter is equal to 2r; to find the radius, simply divide 28 by two. This gives us a radius of 14.

Multiply 14 squared by 22/7:

(22/7)(14^2)

This gives us (22/7)(196); (4312/7); 616.

Therefore, the area of the circle is approximately 616 square centimeters.

8 0

2 years ago

Simplify the expression:<br>15 + 3(2 + 8) - 42

SVETLANKA909090 [29]

The answer is three!!!!!!!!!!!

8 0

4 years ago

Read 2 more answers

Help plz it is only one question

Akimi4 [234]

It would be 43.75% because

7÷16=0.4375
0.4375×100=43.75%

3 0

4 years ago

Sergio is working on a research project involving the ages of students at Brooklyn College. After interviewing 500 students, he

Zinaida [17]

Answer:

The probability of of a randomly chosen student being exactly 21 years old.

= 1.293

Step-by-step explanation:

<u><em>Step(i):-</em></u>

<em>Given Population size n = 500</em>

<em>Mean of the Population = 20 years and 6 months</em>

<em> = </em> $20 + \frac{6}{12} = 20 +0.5 = 20.5 years$ <em></em>

<em>Standard deviation of the Population = 2 years</em>

Let 'X' be the range of ages of the students on campus follows a normal distribution

Let x =21

$Z = \frac{x-mean}{S.D}$

$Z = \frac{x-mean}{S.D} = \frac{21-20.6}{2} =0.2$

<em>The probability of a randomly chosen student being exactly 21 years old.</em>

<em>P( Z≤21) = 0.5 + A( 0.2) </em>

= 0.5 +0.793

= 1.293

6 0

3 years ago

To convert a percent to a fraction, which of the following is not done?

slavikrds [6]

What you do, to convert a percention to a fraction is to divide the percent by 100. This will give you the fraction of that percent. Knowing this, you can eliminate all the other possible answers that have been listed.

4 0

3 years ago