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3 years ago

Out of 21 Students in a class three seventh are boys and Four seventh are girls. How many are girls and how many are boys

Mathematics

1 answer:

konstantin123 [22]3 years ago

3 0

Answer: 9 boys and 12 girls

Step-by-step explanation:

21 * 3/7 = 9

21 * 4/7 = 12

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Describe the function over each part of its domain. State whether it is constant, increasing, or decreasing, and state the slope

vivado [14]

The function is illustrated below based on the information.

<h3>How to describe the function?</h3>

When x <= 8000

The cost remains constant at 0.35 when x increases from 0 to 8000. The slope of the cost function over this part is 0

When 8000 < x <= 20000

The cost remains constant at 0.75 when x increases from 8000 to 20000 and the slope of the cost function over this part is 0.

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2 years ago

Find the midpoint of the line segment with the given endpoints. (-3.1, -2.8) and (-4.92, -3.3)

OleMash [197]

Answer:

Step-by-step explanation:

(-3.1 - 4.92)/2 = -8.02/2 = -4.01

(-2.8 - 3.3)/2 = -6.1/2= -3.05

(-4.01. -3.05) the midpoint

7 0

4 years ago

The second deposit that apex savings bank received was $12,700. If apex savings bank was required to keep $571.50 on reserve, wh

vodomira [7]

$12700 \div 571.50 = 22.22$

4 0

4 years ago

There is a 70% chance that your car will get stuck in the snow during the next big snow fall. Given that you are already stuck i

nikdorinn [45]

Answer:

63%

Step-by-step explanation:

This is a problem of conditional probability.

The two events that are given are:

Car stuck in the snow - Let it be event S. P(S) = 70% = 0.70
Require a tow truck - Let it be event T.

We have to find the probability of being stuck in the snow AND requiring a tow truck which can be given as P(S and T)

We are also given the conditional probability, which is P(T | S) = 90% = 0.90

Using the given formula for our case we can modify the formula as:

$P(T|S)=\frac{P(S \cap T)}{P(S)}$

$0.90=\frac{P(S \cap T)}{0.70}\\\\ P(S \cap T)=0.90 \times 0.70\\\\ P(S \cap T)=0.63$

Therefore, there is 63% (0.63) chance that you will get stuck in the snow with your car AND require a tow truck to pull you out

4 0

3 years ago

K - 21 > 1 what us the inequality

katovenus [111]

Add 21 to both sides, then that means you get
K>22
there is no need to change the signs, as you are not multiplying by a negative or anything

8 0

3 years ago