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4 years ago

Carlos just took 40 question math test he scored 75%

Mathematics

2 answers:

Paul [167]4 years ago

8 0

Answer:

Cool. Carlos is a genius.

Svetradugi [14.3K]4 years ago

5 0

Answer:

$\frac{x}{40} = \frac{75}{100}$

So he missed 10 questions and got 30 right

Step-by-step explanation:

To find the answer we need to find how many times 40 can go into 100. it can go into 100 exactly 2.5 times. So 2.5 times 40 will equal 100(100%) This also means that 2.5 times X should also equal 100.

To find X we can do 75 divided by 2.5. When we do this, we get 30. So he got 30 questions right and missed ten.

Another way to find the answer is to just do 0.75 or 75% times 40(total amount of questions)

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When you send out a resume, the probability of being called for an interview is 0. 40. what is the probability that the first in

Kipish [7]

The probability that the first interview occurs on the fifth resume that you sent is 0.2592.

According to the given question.

The probability of being called for an interview, p = 0.40.

So, the probability of not being called for an interview, q = 1 - 0.40 = 0.60

As we know that binomial distribution summarizes the number of trials, or observations when each trial has the same probability of attaining one particular value. The binomial distribution determines the probability of observing a specified number of successful outcomes in a specified number of trials.

Therefore, the probability that the first interview occurs on the fifth resume that you send out

= $^{5} C_{1} (0.40)^{1} (0.60)^{4}$

= 5(0.40)(0.1296)

= 0.2592

Hence, the probability that the first interview occurs on the fifth resume that you sent is 0.2592.

Find out more information about probability here:

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3 0

2 years ago

Use the following information to answer the question that follows:

sveticcg [70]

Option E is correct. The amount Mayra deposited into the account quarterly is $1,146.35 where the value of n is 4

In order to get the amount compounded quarterly, we will use the compounded interest formula as shown:

A = P(1+r/n)^nt where:

A is the amount after 5 years = $6000

r is the rate (in %) = 6% = 0.06

n is the compounding time = 1/4 (quarterly)

t is the time taken (in years) = 5 years

Required

Amount invested quarterly.

First, we need to get the amount initially invested

Substitute the given values into the formula;

6000 = P(1+0.06(4))^{5/4)}

6000 = P(1+0.24)^1.25

6000 = P (1.24)^1.25

6000 = 1.3085P

P = 6000/1.3085

P = $4,585.40

The amount initially deposited will be $4,585.40

The amount deposited quarterly = P/n where n = 4

Amount deposited quarterly = $4,585.40/4

Amount deposited quarterly = $1,146.35

Therefore the amount Mayra deposited into the account quarterly is $1,146.35 where the value of n is 4.

Learn more here: brainly.com/question/18456266

5 0

3 years ago

Read 2 more answers

You have 8,640 grams of a radioactive kind of cesium. If its half-life is 30 years, how much

Vikki [24]

The mass of cesium left afer 120 years if the original mass of cesium is 8640 with an half-life of 30 years, is 540 grams.

This can be defined as the time taken for half the amount of a radioactive substance to decay.

To calculate the amount of cesium left after 120 years, we use the formua below.

Formula:

R' = R/( $2^{T/t}$ )............. Equation 1

Where:

R = Original amount of Cesium
R' = New amount of cesium
T = Total time
t = Half-life

From the question,

Given:

R = 8640
T = 120 years
t = 30 years

Substitute these values into equation 1

R' = 8640/( $2^{120/30}$ )
R' = 8640/ $2^{4}$
R' = 8640/16
R' = 540 grams.

Hence, The mass of cesium left afer 120 years is 540 grams.

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4 0

2 years ago

-4.5-4.2(-x-5.5)=3x solve for x

Mice21 [21]

-4.5 - 4.2(-x - 5.5) = 3x
-4.5 + 4.2x + 23.1 = 3x
18.6 + 4.2x = 3x
subtract 4.2x from both sides of the equation
18.6 = -1.2x
divide -1.2 from both sides of the equation
-15.5 = x

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3 years ago

Jenna saves $5 each week. She wants to know how much money she has saved after 6 weeks. How can you represent this? Choose all t

alisha [4.7K]

Answer:

$30

Step-by-step explanation:

5 x 6 = 30

hope this helped :)

6 0

3 years ago