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3 years ago

( − + 5 + 3)2; simplify.

Mathematics

1 answer:

iragen [17]3 years ago

3 0

Answer:

-4

Step-by-step explanation:

(- + 5 + 3) 2

(-5+3) 2

-2 x 2

-4

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Lelu [443]

Answer:

the correct answer is A. Because it shows the equal qualifient of the answer

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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:

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

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3 years ago

What is the solution to the system of equations graphed below

aliina [53]

The point where the lines intersect is the point that satisfies both equations.

It is (1, 5), selection C.

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3 years ago

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Vikki [24]

Answer:

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Step-by-step explanation:

the sum of linear pair angles is 180 degree.

so if we apply 16 in place of x in both equations and add them we get 180

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3 years ago

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Elena L [17]

Answer:

Step-by-step explanation:

The correct answer of this question is B

All you need is multiply it by 6

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2 years ago