Hannah has 127 books in her collection. Her school is hosting a book donation. There are z students at her school, and they each plan to donate the same number of books and reach a total donation of 300 books! How many books will Hannah have in her collection after her donation? Write your answer as an expression.

QUESTION POSTED AT 19/02/2020 - 02:30 PM

Answered by admin AT 19/02/2020 - 02:30 PM

Answer:

b/50

Step-by-step explanation:                                                                          There were 150 students who donated a total of b books.

The students donated an average of b/150 books each.

Hannah donated 3 times as many books as the average.

b/150 * 3 = b/50

Hannah donated b/50 books.

Post your answer

Related questions

Help please will mark brainliest answer!!! ASAP!!! What is the final balance for an account starting with $3000 at 2.5% interest compounded annually for 4 years? A = P(1 + r)t

P = principal (initial amount), r = rate of interest, and t = time

So, A = 3000(1+0.025)^4

Answer: $3,311.44 (approximately)

ANSWERED AT 30/03/2020 - 01:35 AM


QUESTION POSTED AT 30/03/2020 - 01:35 AM

Help please will mark brainliest answer!!! ASAP!!! What is the final balance for an account starting with $3000 at 2.5% interest compounded annually for 4 years? A = P(1 + r)t

A = P(1+r)^t  where P is the principal (starting) amount, r is the rate of interest, and t is time. Knowing this, plug in your values:

A = 3,000(1+0.025)^4 < this is what your equation should look like. Once you enter this into a calculator, you should get an answer of $3,311.438672. Round, and you'll be finished.

Answer: The final balance on the account will be $3,311.44

ANSWERED AT 30/03/2020 - 01:33 AM


QUESTION POSTED AT 30/03/2020 - 01:33 AM

What is the answer to the problem

Mean = 8
the mean is discovered by adding all the numbers and dividing by how many numbers are there
MAD= 4.29

ANSWERED AT 30/03/2020 - 01:32 AM


QUESTION POSTED AT 30/03/2020 - 01:32 AM

What is 63 as a product of a prime number

7 is both a prime number and a factor of 63. It is 9 times 7 which equals 63.

ANSWERED AT 30/03/2020 - 01:31 AM


QUESTION POSTED AT 30/03/2020 - 01:31 AM

I need the answer ASAP and work

The answer is B) 108 cubic inches because since prism H is three times the height of prism G's height , the volume of prism H is three times prism G volume therefore you multiply prism G's height; 36 by 3 to get 108

ANSWERED AT 29/03/2020 - 11:15 PM


QUESTION POSTED AT 29/03/2020 - 11:15 PM

I need help on number 2 and number 3 please help me

For number 3...    You can count the blocks and the number you get is how many unit cubes. You can also multiply the length width and height and subtract the amount missing.

ANSWERED AT 29/03/2020 - 06:35 PM


QUESTION POSTED AT 29/03/2020 - 06:35 PM

2x-3y=133x+y=3can you please explain the steps on how to get the answer?

Lets do this the elimination way. to do this, you multiply the bottom equation by three, and now you have
2x-3y=13
9x+3y=9

lets add these two equations together. you get
11x=22
x=2
now substitute 2 for x in the first equation.
2(2)-3y=13
4-3y=13
-3y=9
y=-3


y=-3, x=2

ANSWERED AT 29/03/2020 - 06:35 PM


QUESTION POSTED AT 29/03/2020 - 06:35 PM

Box and whisker plot how do you find the percentage of students above an 80%

What do you mean? Please message me the question and I will gladly help

ANSWERED AT 29/03/2020 - 06:34 PM


QUESTION POSTED AT 29/03/2020 - 06:34 PM

A circular plate has a radius of 13cm. What is the area of the plate? Use 3.14 for pi. Enter your answer as a decimal in the box.

530.66 is the answer your looking for

ANSWERED AT 29/03/2020 - 06:32 PM


QUESTION POSTED AT 29/03/2020 - 06:32 PM

Write 5/8 as a decimal and a percent. 2. At his 1st match 50% of the 312 people that fought against Po were expert fighters. At his 2nd match 40% of the 275 people were expert fighters. Which situation had more expert fighters? Any by how many more?

1. 0.625 and 62.5%
2. Match 1 had 156 expert fighters (0.5 x 312), Match 2 had 110 expert fighters (0.4x275) Match 1 had more expert fighters by 46

ANSWERED AT 29/03/2020 - 06:31 PM


QUESTION POSTED AT 29/03/2020 - 06:31 PM

Write 76% as a decimal and also a reduced fraction. 2. Master Shifu tries to discourage Po from training. He teases Po about messing up 4 out of every 10 Kung Fu moves that he tries to do. What percent of Po's moves does he mess Up?

Write 76% as a decimal and as a reduced fraction.

Decimal : 0.76

Fraction : 76/100, which then simplifies to 38/50, because you divide the numerator & denominator by 2. Then, you divide them by 2 again, and get 19/25. 

Reduced Fraction : 19/25

2) Po messes up 4 out of every 10 moves. 

So, to make this slightly easier, we're going to turn that (above) into a fraction!

Fraction : 4/10

Then, we turn it into a decimal.

To turn it into a decimal, multiply 4/10 by 10/10, so that the denominator is 100. 

Fraction: 4/10 × 10/10 = 40/100

Decimal : Because the denominator is 100, all we have to do is add a decimal marking 2 places to the left of the last digit. (0.40)

Now, because we have our decimal, we simply say that the percentage is 40%.

Why? Because if the decimal is in the hundredths place, all you need to do is take the numbers on the right side of the decimal marking, and add a percentage sign to it.

~Hope I helped!~


ANSWERED AT 29/03/2020 - 06:31 PM


QUESTION POSTED AT 29/03/2020 - 06:31 PM

Write the equation of the circle with center (2, -3) and a radius of 4. A) (x + 2)^2 + (y - 3)^2 = 4 B) (x - 2)^2 + (y + 3)^2 = 4 C) (x + 2)^2 + (y - 3)^2 = 16 D) (x - 2)^2 + (y + 3)^2 = 16

C(h,k) radius(r)
C(2,-3) r=4

(x-h)^2 + (y-k)^2 = r^2
(x-2)^2 + (y--3)^2 = 4^2
(x-2)^2 + (y+3)^2 = 16

therefore, the answer is D

ANSWERED AT 29/03/2020 - 06:29 PM


QUESTION POSTED AT 29/03/2020 - 06:29 PM

GEOMETRY HELPPPPPP What is the probability of getting heads when flipping a coin and getting a number greater than or equal to 3 when rolling a single die?

Together it is 1/4 and each individual is 1/2

ANSWERED AT 29/03/2020 - 06:29 PM


QUESTION POSTED AT 29/03/2020 - 06:29 PM

Help with numbers 2 and 4 please I will hive thanks or brainiest

#2 is 8 yards
#4 is 5 miles

ANSWERED AT 29/03/2020 - 06:29 PM


QUESTION POSTED AT 29/03/2020 - 06:29 PM

Number 9 and number 10?

IDK really, but you can ask the question on brainly.

ANSWERED AT 29/03/2020 - 06:29 PM


QUESTION POSTED AT 29/03/2020 - 06:29 PM

Puja drew this number line and Iabeled 1/3on it.is she correct? Explain why or why not.

Yes she is correct because 1/3 is apart of a whole

ANSWERED AT 29/03/2020 - 06:28 PM


QUESTION POSTED AT 29/03/2020 - 06:28 PM

At a rugby tournament, each player on the top two teams receive medals. If 66 medals are purchased for the tournament, and each team has the same number of players, write an equation and then solve for the total number of medals needed for each team.

I'm not sure if this is what you're looking for, it's a pretty simple equation. What math are you in? This is how I would do it.
66=2x
Divide each side by 2
66/2=2x/2
33=x    
 (So each team would need 33 medals so that every player would get one)

ANSWERED AT 29/03/2020 - 06:28 PM


QUESTION POSTED AT 29/03/2020 - 06:28 PM

What is the answer to 2y (y-4)=

2y^2-8y is the answer to 2y(y-4)

ANSWERED AT 29/03/2020 - 06:28 PM


QUESTION POSTED AT 29/03/2020 - 06:28 PM

11 is 22% of what number ?

I think it would be 50.

ANSWERED AT 29/03/2020 - 06:28 PM


QUESTION POSTED AT 29/03/2020 - 06:28 PM

Answers please ? I need help on all of them.

Well to answer question 43, you would have to multiply the radius but 2 so 8*2= 16 and 16* 3.14= 50.24
ANSWER: 50.24

ANSWERED AT 29/03/2020 - 06:27 PM


QUESTION POSTED AT 29/03/2020 - 06:27 PM

1) What is the slope of a line parallel to the line 2x-3y=6? A) 2/3 B) 1 C) 4/3 D) 1/5 2) Which answer is in slope-intercept form for 4x-9y= -36? A) 9y=-4x-36 B) 9y=4x+36 C) y=4/9x+4 D) y= -4/9x-4

Hello :
2x-3y=6  ...(1)
-3y=-2x+6
y =2/3 x-2.....
 the slope of a line parallel to the line 2x-3y=6 is : 2/3 (same slope)

ANSWERED AT 29/03/2020 - 06:27 PM


QUESTION POSTED AT 29/03/2020 - 06:27 PM

ANSWER FAST PLZZZ Which polygons are congruent? Select each correct answer. Two right scalene triangles labeled D E F and P Q R. Corresponding sides and vertices contain one, two, and three tick marks, respectively. Angles E and Q are right angles. Two triangles labeled T U V and W X Y. Side T U is labeled three, side U V is labeled six and five-tenths, and side V T is labeled seven. Side W X is labeled three, side X Y is labeled six and five-tenths, and side Y W is labeled seven. Corresponding vertices contain one, two, and three tick marks, respectively. Two triangles labeled A B C and F G H. Angles A and F are labeled eighty-three degrees. Angle B is labeled forty-eight degrees, angle C is labeled forty-nine degrees, angle G is labeled forty-five degrees, and angle H is labeled fifty-two degrees. Sides B C and G H each contain one tick mark. two right triangles. one with legs 4 and 7 units. the other one with legs 5 and 8 units.

Answer with explanation:

Two Triangles are Congruent by following Geometrical Axioms

1. SAS

2.SSS

3. AAS

4. ASA

1. In Δ DEF and Δ P QR

PQ=DE

∠DEF=∠PQR→→Each being 90°

EF=QR

Δ DEF ≅ Δ P QR→→[SAS Congruency]

2. As in Image 2, only one angle is common

we can't say that triangles are congruent.

3. In ΔT UV and Δ W X Y

WX=TU

UV=XY

TV=WY

∠TUV=∠WXY

∠UTV=∠XWY

ΔT UV ≅ΔW X Y→→[By SAS or AAS or SSS]

4.In ΔABC and ΔFGH

∠A=∠F=83°

we can't say that triangles are congruent,as neither the other two angles nor the other two sides are equal.

5. None of the sides nor of the angles are equal .So the triangles are not congruent.

→→So, Image 1, Image 3,  are congruent Polygons.

ANSWERED AT 29/03/2020 - 06:27 PM


QUESTION POSTED AT 29/03/2020 - 06:27 PM

Need help on number 16. A recipe calls for 3 cups of sugar for every 5 cups of flour. If the recipe you make requires 2.5 cups of flour, how many cups of sugar will you need?

Um what if you multiply 2.5 x5=12.5 then multiply 16x3=48 and then subtract 12.5 by 48 and you will get 77 cups of sugar srry if it is not the right answer this is not my account this is my fathers im not in collage im in 5th grade . so i hope this helped you

ANSWERED AT 29/03/2020 - 06:25 PM


QUESTION POSTED AT 29/03/2020 - 06:25 PM

There are 300 degrees in the sum of the interior angles of a polygon.

The sum of the interior angles of a ngon is 180(n-2)

so

if we had
300=180(n-2)
divide boths ies by 180
5/3=n-2
add 2 to both sides (2=6/3)
11/3=n
you can't have 11/3 number of sides, yo have to have a whole number of sides

so no, that is impossible, will never happen

ANSWERED AT 29/03/2020 - 06:24 PM


QUESTION POSTED AT 29/03/2020 - 06:24 PM

Which type of data is BEST described by a continuous model? A) points scored B) pages in a book C) children in a family D) temperature of an engine

The meaning of term continuous is that there should be no breaking.

In terms of mathematics , a function is said to be continuous function if there are no gaps when you plot the curve on coordinate axis.

In option 1, points scored is an incomplete statement.

Option 2, pages in a book is an example of constant function if you count pages between two pages. But it is a continuous function if page numbers are counted.

Option 3, children in a family is not a continuous function because there are gap in birth of two children.

Option 4, Temperature of an engine varies if engine is moving, otherwise remains constant.

Option (B), pages in a book is a type of data which is BEST described by a continuous model.    

ANSWERED AT 29/03/2020 - 06:24 PM


QUESTION POSTED AT 29/03/2020 - 06:24 PM

Did I answer the following problem right ?

I think it is right.. thats what i would have chose.

ANSWERED AT 29/03/2020 - 06:23 PM


QUESTION POSTED AT 29/03/2020 - 06:23 PM

Write ( 5×1)+(1×0.1)+(4×0.01) in base ten numerals

Th e answer is 5.5
...........

ANSWERED AT 29/03/2020 - 06:22 PM


QUESTION POSTED AT 29/03/2020 - 06:22 PM