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3 years ago

4

Mathematics

1 answer:

emmasim [6.3K]3 years ago

4 0

Answer:

Step-by-step explanation:

y=mx + b where m is the slope and b is the y-intercept. So substituting 4/5 for m and 5 for b, you get answer A.

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You estimate that there are 40 marbles in a jar. the actual amount is 34 marbles. find the percent error. round to the nearest t

zimovet [89]

The percentage error of the given estimation is 17.7%.

The percentage error of any estimation is calculated as:

Percentage error = {(|Actual Value - Estimated Value|)/Actual Value}*100%.

In the question,

The estimated value is given to be 40 marbles.

The actual value is given to be 34 marbles.

We are asked to find the percentage error of this estimation.

We know that:

Percentage error = {(|Actual Value - Estimated Value|)/Actual Value}*100%.

Substituting the values, we get:

Percentage error = {(|34 - 40|)/34}*100%,

or, Percentage error = 6/34*100%,

or, Percentage error = 17.6470 % = 17.7% (Rounding to the nearest tenth, that is, up to one decimal place).

Thus, the percentage error of the given estimation is 17.7%.

Learn more about percentage error at

brainly.com/question/21529578

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2 years ago

If 80% of scheduled flights actually take place and cancellations are independent events, what is the probability that 3 separat

Mekhanik [1.2K]

We are given that 80% of scheduled flights really take place, therefore this means that:

Probability of flying = 80% = 0.80

Now in statistics class, we know that the probability of two or more independent events to occur is simply equivalent to the product of their probabilities, or mathematically written as: (P = Probability)

total P = P1 * P2 * P3 *...

In this case, since we are to find for the probability that 3 independent flights will occur, therefore the total probability assuming equal probabilities to fly is:

total probability = 0.80 * 0.80* 0.80

total probability = 0.512

total probability = 51.20%

This means that there is only a 51.20% chance for 3 flights to occur.

7 0

4 years ago

What is the product? (2x - 1)(x+4) 2²-4 2x²+4 2x^2+7x-4 2x^2-7x-4

SVETLANKA909090 [29]

2x^2 -7x -4 is the answer

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4 years ago

Cos(7π/6)= a. 1/2 b.-1/2 c.√3/2 d.-√3/2 Help please?

olga nikolaevna [1]

Answer:

D. -√3/2

Step-by-step explanation:

Remember your unit circle.

Alternatively, you can plug in cos(7π/6) into your calc (Put it in rad mode) and calculate your answer.

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3 years ago

Read 2 more answers

Jen needs to save $180 for a new camping tent. She is able to save $9 each week. How many weeks will Jen need to save to reach h

charle [14.2K]

It will take jen 20 weeks till she can get a new camping tent

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3 years ago