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3 years ago

Can you please solve and explain how. I dont have any idea :(

Mathematics

1 answer:

mezya [45]3 years ago

4 0

From the expression 2f + 5(8-f), we know that Karla caught f purple dot fish, and (8-f) green dot fish, because green dot fish gives 5 points.

2f -points for the purple dot fish, f is a number of the purple dot fish.

5(8-f) - points for the green dot fish, (8-f) is a number of the green dot fish.

So,

altogether she made 8 attempts.

One attempt cost 50 cents,

8 attempts cost 8*50=400 cents = $ 4.

Answer is B. 4 (dollars).

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Last year, the number of students enrolled in the school was 672. If this number increases by 12% the next year, how many studen

ludmilkaskok [199]

Answer:

$753$ students

Step-by-step explanation:

Last year number of students $=672$

Increase in next year $=12\%$

$\left( x\%\ of\ an\ amount\ A =\frac{x}{100}\times A \right)$

$12\%$ of $672=\frac{12\times672}{100}=80.64$

So total increase in next year $=80.64\approx81$

Hence total number of students next year = number of students last year $+$ increase

$=672+81\\=753$

3 0

3 years ago

A group of 8 people are sharing gummy bears each person wants 5 gummy bears each bag has 9 gummy bears

ANEK [815]

At least 5 bags of gummy bear bags are needed for each person to get 5 gummy bears.

The given parameters;

total number of people sharing the gummy bears, n = 8 people
number of gummy bears in each bag, = 9 gummy bears
number of gummy bears needed by each person = 5 gummy bears

The number of gummy bear bags needed to share 5 gummy bears to each person is calculated as follows;

let the number of gummy bears bag = x

$\frac{9x}{8} = 5\\\\9x = 40\\\\x = \frac{40}{9} \\\\x = 4.4$

Thus, at least 5 bags of gummy bear bags are needed for each person to get 5 gummy bears.

Learn more about sharing and divisions here: brainly.com/question/112003

5 0

3 years ago

The density of the ice crystal is 0.93 g/cm3. What is the volume if the mass is 4.65 grams?

Crazy boy [7]

4.3245 g/cm^3.

V= MD

V= 4.35(0.93)

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3 years ago

Simplify this problem

andrey2020 [161]

Answer:

-22 1/2

Step-by-step explanation:

-2 1/2 *s

Let s = 9

-2 1/2 (9)

Change to an improper fraction

-5/2 *9

-45/2

Change back to a mixed number

-22 1/2

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3 years ago

A circle has a radius of 3 units. What is the area of the circle? Round to the nearest hundredth.Use 3.14 for pi.

just olya [345]

Answer:28.26

Step-by-step explanation:kid use pi r^2

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3 years ago