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2 years ago

The ratio of girls to boys in the coed soccer league is 3:7. Choose True or

Mathematics

1 answer:

Julli [10]2 years ago

7 0

Answer:

True

Step-by-step explanation:

3:7 is girls to boys, and to find the total, do 7+3. After that, you'd get 10, and the ratio would be 3:10, so TRUE

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It snowed 875 inches last winter. This was 5 times the amount that it snowed the previous winter. How much did it snow the previ

Tomtit [17]

875/5=125

It snowed 125 inches the previous year. I hope I helped! :)

6 0

3 years ago

Two boys and three girls are auditioning to play the piano for a school production. Two students will be chosen, one as the pian

finlep [7]

Answer:

30% is the correct answer.

Step-by-step explanation:

Total number of boys = 2

Total number of girls = 3

Total number of students = 5

To find:

Probability that the pianist will be a boy and the alternate will be a girl?

Solution:

Here we have to make 2 choices.

1st choice has to be boy (pianist) and 2nd choice has to be girl (alternate).

$\bold{\text{Required probability }= P(\text{boy as pianist first}) \times P(\text{girl as alternate})}$

Formula for probability of an event E is given as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

For $P(\text{boy as pianist})$ , number of favorable cases are 2 (total number of boys).

Total number of cases = Total number of students i.e. 5

So, $P(\text{boy as pianist})$ is:

$P(\text{boy as pianist}) = \dfrac{2}{5}$

For $P(\text{girl as alternate})$ , number of favorable cases are 3 (total number of girls).

Now, one boy is already chosen as pianist so Total number of cases = Total number of students left i.e. (5 - 1) = 4

$P(\text{girl as alternate}) = \dfrac{3}{4}$

So, the required probability is:

$\text{Required probability } = \dfrac{2}{5}\times \dfrac{3}{4} = \dfrac{3}{10} = \bold{30\%}$

6 0

3 years ago

Four times the sum of a number and two increased by three is at least twenty seven

Genrish500 [490]

4(x + 2) + 3 >= 27

4x + 8 + 3 >= 27

4x + 11 >= 27

4x >= 16

x >= 4

6 0

3 years ago

suppose you invest $700 in a savings account that pays 4.2% annual interest compounded continuously. how much money will be in t

Elina [12.6K]

Answer:

847

Step-by-step explanation:

700 ÷100 = 7

7× 4.2 = 29.4

29.4×5 =147

500+147

7 0

3 years ago

Which expressions are equivalent to 2r+(t+r)

stepan [7]

Answer:

2r+(t+r)

2r+t+1r

3r+t

8 0

2 years ago