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3 years ago

Which of the following is an example of conditional probability.

Mathematics

2 answers:

Papessa [141]3 years ago

6 0

B
the probability of an event ( A<span> ), given that another ( </span>B<span> ) has already occurred.
</span>

Marysya12 [62]3 years ago

4 0

It would be b because first off it is different from all the others and it has probability of a given b

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Cheryl solved a problem: 84 ÷ 0.01 = 8,400.

Alexandra [31]

Answer:

Cheryl is correct.

Step-by-step explanation:

Cheryl solved a problem : 84 ÷ 0.01 = 8,400.

This is absolutely right.

When we divide any whole number with the divisor having decimal, we change the divisor to a whole number before performing the division.

To do this, we multiply both the numbers (divisor and dividend) by the same power of 10, until the divisor is a whole number.

$\frac{84\times 10}{0.01\times 10}$ = $\frac{840}{0.1}$

to make divisor a whole number we will again multiply both the numbers by 10.

$\frac{840\times 10}{0.1\times 10}$ = $\frac{8400}{1}$ = 8,400

Now answer would be 8400.

Therefore, Cheryl is correct.

7 0

2 years ago

1. 3x + 7 = 13 (x = -2; x = 2; x = 5)

White raven [17]

3x + 7 = 1 3

3x = 13 - 7

3x = 6

x = 6/3

x = 2

7 0

3 years ago

Read 2 more answers

Hannah earned $1536 in 8 years on an investment at a 4% annual simple interest rate. How much was Hannah’s investment? $4800 $30

Nonamiya [84]

Simple interest calculates interest on initial amount only. The investment by Hannah was : Option A: $4800

<h3>How to calculate simple interest amount if rate of interest is R% annually?</h3>

Suppose that the initial amount of investment is P

And the rate of simple interest is R% annually,

And the time of investment is T years.

Then, the amount of simple interest is calculated as:

$I = \dfrac{P \times R \times T}{100}$

For the given case, let the initial investment Hannah made was of $P

Then, the time of investment is T = 8 years, R% = 4%, and given that Hannah earned interest I = $1536

Putting values in the above formula, we get;

$I = \dfrac{P \times R \times T}{100}\\\\1536 = \dfrac{P \times 8 \times 4}{100}\\\\P = \dfrac{153600}{32} = 4800$

Thus,

The investment by Hannah was : Option A: $4800

Learn more about simple interest here:

brainly.com/question/5319581

5 0

2 years ago

HELP ME ASAP PLEASEEEEEEE

Vlad [161]

Answer: a) about 450

Step-by-step explanation:

50 multiplied by 9 is 450 and its asking for an approximate so it would be anything near 450

3 0

3 years ago

The ratio of boys to girls at a daycare is 5 to 4 which of these cannot be the total number of kids at the daycare ?

Andre45 [30]

I believe the answer is D

6 0

3 years ago