An engineering student answered 81 questions correctly on a 90-question test. What percent of the questions did she answer
incorrectly?

Answers

Answer 1

Answer:

90% of the question answered correct

10% were incorrect

Step-by-step explanation:


Related Questions

Maggie plans to sell the bracelets she makes for a price of $5.50 each. For every bracelet she makes, she has costs of $0.05 for each of the 21 beads used, $0.74 for each of the two charms used, and $1.09 for the chain with clasp used. Which of these would result in Maggie NOT earning a profit on the sale of a bracelet?

Answers

Price of each bracelets , P = $5.50 .

Cost price = $0.05 for each of the 21 beads used + $0.74 for each of the two charms used + $1.09 for the chain with clasp used.

Cost price = $( 0.05×21 + 0.74×2 + 1.09 )

Cost price = $3.62 .

Now, profit is given by :

Profit = Selling price - Cost price

Profit = $(5.50 - 3.62)

Profit = $1.88

Therefore, she will not bear any loss.

Write 2.1 (periodic decimal, only 1 repeats) as a mixed number. Show your work.

Answers

Answer:  2 1/9 is the mixed number that  is equivalent to 2.1111 repeating

Step-by-step explanation:

Try dividing 1÷9 on a calculator to get the decimal value of 1/9.

Then just keep 2 as the whole number in front of the fraction.

For which compound inequalities is 16 a solution? Select the statements that are true.
a. -15 b. -12 less than or equal to x less than or equal to 16
c. x less than equal to 12 or x greater than or equal to 16
d. x less than 12 or x greater than 16
e. x less than -15 or x greater than 0


Answers

This Question Your Answer : D

(2x3 - 5x2 + 3x + 7) /(x - 2)

Answers

Answer:

2x^2 - x + 1 + 9/(x - 2)

Step-by-step explanation:

Long division:

x - 2 )2x^3 - 5x^2 + 3x + 7 (2x^2 - x  + 1 <------------Quotient.

        2x^3 - 4x^2

                  -x^2 + 3x

                  -x^2 + 2x

                               x + 7

                                x - 2

                                    9  <-------Remainder.

Have a wonderful day lvu<3 free pts...... also if you go for biden plz dont come in saying trump sucks or sum like that ive been getting alot of that lately........ be safe :)
455+446=?

Answers

✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽

➷ [tex]455+446= 901[/tex]

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ May ♡

(1) You are selling bags of popcorn to raise money for a school field trip. Cheesy popcorn bags cost $5 each and
the caramel corn costs $7 per bag. Your goal is to raise at least $250 and you only have enough caramel corn to
make 12 bags. Write a system of inequalities that would represent how much of each type of popcorn you could
sell.

Answers

Answer:

166=5x

Step-by-step explanation:

y=12*7

y=84

250-84 is 166

The sum of 8 and a number

Answers

The sum is 16 of the number
If you are looking for the way to write it
8+x=

can someone give ma Brainiest plez and thx

Answers

Answer:

you can only get brainliest if you answer a question and if it's long -_-

Step-by-step explanation:

PLEASE ANSWER ASAP DUE NOW!!!

Answers

Answer:

A

Step-by-step explanation:

One out of every 119 tax returns that a tax auditor examines requires an audit. Find the probability that (a) the first return requiring an audit is the 25th return the tax auditor examines, (b) the first return requiring an audit is the first or second return the tax auditor examines, and (c) none of the first five returns the tax auditor examines require an audit.

Answers

Answer:

A) 0.00686

B) 0.01673

C) 0.99587

Step-by-step explanation:

For this question, we are interested in the first success and we will Thus make use of geometric probability distribution.

It goes by the formula;

P(x) = [(1 - p)^(x - 1)]p

We are told that One out of every 119 tax returns that a tax auditor examines requires an audit.

Thus; p = 1/119 = 0.0084

A) Probability that the first return requiring an audit is the 25th return the tax auditor examines is given by;

P(25) = [(1 - 0.0084)^(25 - 1)]0.0084

P(25) = 0.00686

B) Probability the first requiring an audit is the first or second return the tax auditor examines, is;

P(1 or 2) = P(1) + P(2)

P(1) = [(1 - 0.0084)^(1 - 1)]0.0084

P(1) = 0.0084

P(2) = [(1 - 0.0084)^(2 - 1)]0.0084

P(2) = 0.00833

Thus;

P(1 or 2) = 0.0084 + 0.00833

P(1 or 2) = 0.01673

C) Probability that none of the first five returns the tax auditor examines require an audit is given by;

P(X > 5) = 1 - P(X ≤ 5)

Now,

P(X ≤ 5) is expressed as;

P(X ≤ 5) = P(1) + P(2) + P(3) + P(4) + P(5)

We know P(1) & P(2) already. Let's find P(3), P(4) and P(5)

P(3) = [(1 - 0.0084)^(3 - 1)]0.0084

P(3) = 0.00826

P(4) = [(1 - 0.0084)^(4 - 1)]0.0084

P(4) = 0.00819

P(5) = [(1 - 0.0084)^(5 - 1)]0.0084

P(5) = 0.00812

P(X ≤ 5) = 0.0084 + 0.00833 + 0.00826 + 0.00819 + 0.00812

P(X ≤ 5) = 0.00413

P(X > 5) = 1 - 0.00413

P(X > 5) = 0.99587

Simplify the expression 256b − b by combining like terms.

Answers

Answer:

255b

Step-by-step explanation:

subtract 256b by b

QETJHSN. XGKDXBFX N.CCBX ..BDBZVDB.NDWHDSWGVB

Answers

Answer:

Wut WUt Wut oof :.

Step-by-step explanation:

I need to know if there functions or not (algebra)

Answers

Answer:

Number 14 is a function and Number 16 is NOT a function.

Step-by-step explanation:

To check if a set of numbers form a function, you can look at the x values or the imput values.

For number 14 the x values are : 4,-3,-4,5,6. When looking at these values, there can only be one of each number.

For example in number 16, there's two 0's and we cannot allow that! So therefore, number 16 is not a function.

Also note, the y values are called the outputs.

A function is only allowed to have ONE imput with each output.

Hope this helps! :)

what is 23/144 + 13/144

Answers

the answer is 1/4 (0.25)

£2000 is placed into a bank that pays 3% compound interest per year, how much will it be after 2 years?

Answers

120 is your answer hope this helps

Answer:

2,121.80

Step-by-step explanation:

Compounded annually:  Account Balance = Principal x (1 + interest rate (decimal))^number of years.  

With the given information this is:  2000 (1.03)^2 = 2,121.80.  

So you will earn 121.80 in interest after 2 years on your original 2000 deposit.

Can I get Brainliest?

Write an equation for the translation of y = |x|. 3 units left

Answers

The answer is
Y=|x+3|

En el parque de béisbol "Héctor Espino"; cuatro boletos de butaca y 7 de general cuestan $ 415.00, mientras que tres de butaca y dos de general cuestan $ 230.00. Encuentra el precio de un boleto de butaca.

Answers

Answer:

is this question in Spanish?

The equation t= 13p + 108 can be used to estimate the cooking time t in
minutes for a stuffed turkey that weighs p pounds. Solve the equation for p.
Then find the weight of a turkey that requires 285 minutes to cook.

Answers

Answer:

Step-by-step explanation:

(285)=13p+108

177=13p

p= 13.62 lbs

What are the solutions to the equation 0 = x2 – x –6? Select two options

x = –3
x = –2
x = 0
x = 2
x = 3

Answers

Answer:

-2 or 3

Step-by-step explanation:

Step 1: Factor equation.

(x+2)(x−3)=0

Step 2: Set factors equal to 0.

x+2=0 or x−3=0

x=−2 or x=3

-2 and 3 are the solutions to the equation x² – x – 6 = 0

To determine the solutions of the equation x² – x – 6 = 0

x² - x - 6 = 0

x² - 3x + 2x - 6 = 0

x (x - 3) + 2(x + 3) = 0

(x + 2) (x + 3) = 0

(x + 2) = 0

x = - 2......(1)

(x + 3) = 0

x = - 3..........(2)

x = −2 or x = 3

Therefore, -2 and 3 are the solutions to the equation  x² – x – 6 = 0.

Learn more about Quadric equation here:

https://brainly.com/question/19048987

#SPJ2

If an equation takes the form y (minutes) = 3x (cookies eaten),
how long will it take you to eat 6 cookies?

Answers

Answer:

18 minutes

Step-by-step explanation:

You would plug in 6 for x and it should look like this

y=3×6

then you multiply and you get

y=18

So it would take 18 minutes.

An angle of size 124 degrees has been rotated d degrees around a center 0 what is the size of the rotated angle?​

Answers

Answer:

124

Step-by-step explanation: Hope it helps

find the slope of the two given points (-9,6) and (0,1)​

Answers

Answer:

[tex]m=\frac{-5}{9}[/tex]

Step-by-step explanation:

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Simply plug in the 2 coordinates into the slope formula to find slope m:

[tex]m=\frac{1-6}{0-(-9)}[/tex]

[tex]m=\frac{-5}{0+9}[/tex]

[tex]m=\frac{-5}{9}[/tex]

an item is regularly priced at $63. justin bought it at a discount of 45% off the regular price. find out how much justin paid

Answers

Answer:

18$

Step-by-step explanation:

Please HELP IF CORRECT I WILL MARK BRAINLYLIST!!!!

Answers

Answer:

they are parallel so same answer, 85 degrees.

If the vegetable assembly line runs for 3 minutes, how many minutes would the fruit assembly line need to run to complete the order of 384 cans? Explain.

Answers

Answer:

You need to say how many cans go by a minute to be able to answer this question.

Step-by-step explanation:

Answer:

8 Minutes

Step-by-step explanation:

24x+64y=384 y=3 minutes

24x+64930=384

24x+192=384

24x=384-192

24x=192

192/24=8 minutes

Express the repeating decimal as a fraction \large 2.11111...

Answers

Answer:

i believe A

Step-by-step explanation:

What is the formula for distance?

Answers

Formula:

Hope this helped, if not, don’t spam.

DISTANCE

The formula in finding the distance between two points is given below:

[tex] \boxed{\bold{\:\:d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} \:\:}}[/tex]

Now, you know the distance formula. So, let us try solving a sample problem using the distance formula.

Sample problem: Determine the distance between P(3, 2) and Q(10, 2).

From inspection on the given problem:

(x_1, y_1) = (3, 2)(x_2, y_2) = (10, 2)

Substitute the given values into the distance formula and solve for PQ:

[tex]\sf PQ = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}[/tex]

[tex]\sf PQ = \sqrt{(10 - 3)^2 + (2 - 2)^2}[/tex]

[tex]\sf PQ = \sqrt{(7)^2 + (0)^2}[/tex]

[tex]\sf PQ = \sqrt{49 + 0}[/tex]

[tex]\sf PQ = \sqrt{49}[/tex]

[tex]\bold{PQ = 7 \: units}[/tex]

Therefore, the distance between two points is 7 units.

[tex]\\[/tex]

Now, wasn't that easy? Try this other sample problem:

Find the distance between P(1, 3) and Q(7, 11).

From the sample problem above, you may solve it on your own to enhance your skill on calculating the distance.

Cheers!

Please HELP!!!!!! Name one point that is located on the graph and state the real-world meaning of that point.

Answers

Answer:

the 2nd and the 3rd point

Step-by-step explanation:

its know as stationary

Jason had three more than four times the amount of money that Jeff has. Together they have $72. How much money does each person have?

Answers

Answer:

Jason has $58.20 and Jeff has $13.80.

Step-by-step explanation:

Let x represent the amount of money Jason has, and y represent the amount of money Jeff has.

We know that together they have $72. So, we can write the following equation:

[tex]x+y=72[/tex]

We know that Jason has three more than four times the amount of money Jeff has. So:

[tex]x=3+4y[/tex]

This is a system of equations. We can solve it by using substitution. Let's substitute the second equation into the first. This yields:

[tex](3+4y)+y=72[/tex]

Combine like terms:

[tex]5y+3=72[/tex]

Subtract 3 from both sides:

[tex]5y=69[/tex]

Divide both sides by 5:

[tex]y=69/5=\$13.80[/tex]

So, Jeff has $13.80

We know that Jason has three more than four times the amount of money Jeff has.

Therefore, Jason has:

[tex]x=13.8(4)+3[/tex]

Multiply and add:

[tex]x=\$58.20[/tex]

So, Jason has $58.20 and Jeff has $13.80.

And we're done!

Advertisers contract with Internet service providers and search engines to place ads on websites. They pay a fee based on the number of potential customers who click on their ad. Unfortunately click fraud, the practice of someone clicking on an ad solely for the purpose of driving up advertising revenue, has become a problem. Forty percent of advertisers claim they have been a victim of click fraud. Suppose a random sample of 380 advertisers will be taken to learn more about how they are affected. What is the probability that the sample proportion will be with 0.04 of the population proportion?

Answers

Answer:

The probability that the sample proportion will be with 0.04 of the population proportion is 0.8904.

Step-by-step explanation:

Let p = proportion of advertisers who claim they have been a victim of click fraud.

The population proportion is, p = 0.40.

A random sample of 380 advertisers is selected.

According to the Central limit theorem, if from an unknown population large samples of sizes n > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.

The mean of this sampling distribution of sample proportion is:

[tex]\mu_{\hat p}=p[/tex]

The standard deviation of this sampling distribution of sample proportion is:

[tex]\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}[/tex]

The sample selected is too large, i.e. n = 380 > 30.

Then the proportion of advertisers who claim they have been a victim of click fraud can be approximated by the normal distribution.

The mean and standard deviation of this sampling distribution of sample proportion is:

[tex]\mu_{\hat p}=p=0.40\\\\\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}=\sqrt{\frac{0.40(1-0.40)}{380}}=0.025[/tex]

Compute the probability that the sample proportion will be with 0.04 of the population proportion as follows:

[tex]P(p-0.04<\hat p<p+0.04)=P(\frac{-0.04}{0.025}<\frac{\hat p-\mu_{\hat p}}{\sigma_{\hat p}}<\frac{0.04}{0.025})[/tex]

                                       [tex]=P(-1.60<Z<1.60)\\=P(Z<1.60)-P(Z<-1.60)\\=0.94520-0.05480\\=0.8904[/tex]

Thus, the probability that the sample proportion will be with 0.04 of the population proportion is 0.8904.

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