Lauren brings brownies to class and gives 3/5 of them to Peter, Wendy, and Michael. If she gave them 21 brownies, how many did she bring to class?

Answers

Answer 1

Answer:

If 3/5 of all the brownies is 21, then 5/3 of 21 is the number of the brownies that Lauren brought in.

That probably sounded super confusing. When multiplying a number by a reciprocal of a fraction (a fraction where the numerator and denominator is reversed), the previous fraction multiplication is reversed.

Multiplying 21 with 5/3 will give us the original number of brownies.

Lauren originally brought 35 brownies.

Step-by-step explanation:

plz mark brainlyest it really helps

Related Questions

the pounds p of the flour and how many cakes c you can make

Answers

Answer:

How many pounds of flour do you have and how many pounds of flour it takes to make a cake?

Step-by-step explanation:

Discount, markup, and commission word problems
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A store has a 40% off sale on headphones. With this discount, the price of one pair of headphones is $36.
What is the original price of the pair of headphones?
$
Show Calculator
Stuck? Watch a video or use a hint.
Report a problem

Answers

Answer:

90$

Step-by-step explanation:

X(40%) = 36$

X(40/100) =36

40X = 3600

X = 90$

(recheck: 90$ x 40%= 36$)

A rectangle with an area of 61 units” is dilated by a scale factor of ;. Find the area of
the rectangle after dilation. Round your answer to the nearest lenth, if necessary.

Answers

Answer:

34 units

Step-by-step explanation:

I decided that one side is 61 units and the other is 1 unit, since that would make the area 61 units.

Then I multiplied 61 by 3/4, which equals a new length of 45.75 units, and I also multiplied 1 by 3/4, which equals a new length of 0.75 units.

Finally, I solve for the area of the rectangle:

45.75 x 0.75 ≈ 34 units (rounded to the nearest whole number)

Group B & C
Show all work
If Stephen ate 3/4 of the 20 chips below, how many chips did he eat in all?

Answers

20/4 = 5
5 • 3/4 = 15
Stephen ate 15 chips in total

Select all the expressions that are equivalent to - 2/5 (15-20d + 5c).
-6 + 8d - 2c
-2c + 8d - 6
-2(3 - 4d + c)
-30 + 40d - 100
O 6-8d + 20

Answers

One of them is -6+8d-2c

help meh I keep doing bad :/

Answers

Answer:

5,009.206

Explanation:

..Urgent.. 600 students attend Ridgewood Junior High School. 10% of students bring their lunch to school everyday. How many students brought their lunch to school on Thursday?

Answers

Answer:

Number of student bring their lunch = 60

Step-by-step explanation:

Given:

Total number of student = 600

Student bring their lunch = 10%

Find:

Number of student bring their lunch

Computation:

Number of student bring their lunch = Total number of student x Student bring their lunch

Number of student bring their lunch = 600 x 10%

Number of student bring their lunch = 60

What is the length, in feet, of the wire?

Answers

The answer is about 5.385 feet if you are asking for the hypotenuse.Please let me know if that was not what you were asking for.

The lines graphed below are parallel.The slope of the red line is-4/3. What is the slope of the green line?

Answers

Answer:

-4/3

Step-by-step explanation:

You know that parallel lines have the same slope. So, if both lines are parallel, then they must have the same slope.

Answer:

-4/3

Step-by-step explanation:

A line thats parallel with a line with a slope -4/3 will have the same slope because it is parallel so it has the same the degree of tilt/slope

Whoever helps me will save my life

Answers

This makes no sence ppl just say the answers or whatever it is

I need help please help

Answers

Answer:

first one

28.26 im not 100% correct i dont think

it’s the first one.
i think it’s the first one

about 40% of athletes at a gym use a professional trainer. The proportion of success is when p= 0.4. you choose a random sample of 50 athletes at a gym. Use this information to answer questions 14 and 15.
14) What is the standard error of the mean?
15) what interval captures 68% of the proportions for random samples of 50 athletes?

Answer:

24 miles per hour

Step-by-step explanation:

144/6

= 24

Its 24 miles per hour

= 144 / 6
= 24

I know someone answered this already, i just want points

A study of U.S. births published on the website Medscape from WebMD reported that the average birth weight of babies was 7.5 pounds and the standard deviation was about 1.2 pounds. Assume the distribution is approximately normal. Find the proportion of babies with birth weights of 6 pounds or less. Round your answer to 2 decimal places.

Answers

Answer:

The proportion of babies with birth weights of 6 pounds or less is 0.1056 = 10.56%.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Average birth weight of babies was 7.5 pounds and the standard deviation was about 1.2 pounds.

This means that [tex]\mu = 7.5, \sigma = 1.2[/tex]

Find the proportion of babies with birth weights of 6 pounds or less.

This is the pvalue of Z when X = 6. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{6 - 7.5}{1.2}[/tex]

[tex]Z = -1.25[/tex]

[tex]Z = -1.25[/tex] has a pvalue of 0.1056

The proportion of babies with birth weights of 6 pounds or less is 0.1056 = 10.56%.

Find the solution set of the inequality 3x+5≤-13

Answers

3x < -13 - 5
3x < -18
x < -6

Answer:

has to be under / or -13 so ...

x = -6

3(-6) + 5 =

-21 + 5 = -13

give to reasons why do you think Sin/excise tax is so high

15x + 17y = 2( [tex]\frac{7x}{2} + 7y[/tex] + Width)

15x + 17y = 7x + 14y + 2(Width)

15x + 17y -7x -14y = 2(Width)

8x + 3y = 2(Width)

Width = [tex]\frac{8x + 3y}{2}[/tex]

Width = 4x + 3y/2

What is the coefficient of y in the expression x+4y+3

Answers

4 since there is nothing to simply

Austin Use the distributive property to overwrite 18 + 54 which expression could the student use

Answers

Answer:

18( 1 x 3 )

Step-by-step explanation:

find the greates common factor of 18 and 54

hope this helps

Can someone help me please

Answers

v+4/5 = 3 1/3
Exact form = 38/15
Decimal form= 2.53...
Mixed number form= 2 8/15
(I hope this helped)

The scouts sold small and large boxes of cookies as a fund raiser. One scout sold 7 small boxes and 12 large boxes for $54.00. Another scout sold 5 small boxes and 10 large boxes for $60.00. The scout leader wrote a system of equations to represent the their sales.

7 x + 12 y = 54. 5 x + 10 y = 60.

Which constants can each equation be multiplied by so that one variable is eliminated when the equations are added? Check all that apply.
The first equation can be multiplied by 5 and the second equation by –6 to eliminate the y.
The first equation can be multiplied by –5 and the second equation by 6 to eliminate the y.
The first equation can be multiplied by –5 and the second equation by 7 to eliminate the x.
The first equation can be multiplied by 5 and the second equation by –7 to eliminate the x.
The first equation can be multiplied by –5 and the second equation by 10 to eliminate the x.

Answers

Answer:

1,3,4

Step-by-step explanation:

Answer:

1,2,3,4

Step-by-step explanation:

i am just smart and dont cheat ;)

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