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larisa [96]
4 years ago
14

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.
Mathematics
1 answer:
Alexxandr [17]4 years ago
8 0
Let n be the number of books that each student donates...
z * n = 300.....n = 300/z

the number of books Hannah will have left is : 
127 - n =
127 - 300/z <==


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3 exponet 8×4+9÷1×56+57
nika2105 [10]
You would use PEMDAS

But since any number divided by 1 is the number by which it is divided by then you can eliminate that. Now your problem looks like this:
8✖️4➕9✖️56➕57

Since there are no parentheses or exponents then you would multiply.
8✖️4= 32
32➕9✖️56➕57

Then multiply the other multiplication problem.
9✖️56= 504
32➕504➕57

Now you can add all of the numbers together
32➕504=536
536➕57=593

Your answer is 593

Hope this helps! :3
4 0
3 years ago
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yulyashka [42]
Both of these values are the same, so the number sentence would state:

7.17 = 7.170

You can place any number of zeros to the very end on the right side (when there is a decimal point) without changing the value of the number.

7.1700000 = 7.17 also
5 0
4 years ago
If a dilation is applied to a triangle, then the image must be _____.
netineya [11]

Answer:

a triangle that is rotated about a given point.

Step-by-step explanation:

4 0
3 years ago
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A pediatricians office tracks the age (in months) in which 25 babies begin to walk. Use the dot plot at the right to answer the
OLEGan [10]

Answer:

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3 0
2 years ago
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In the diagram below, RA is parallel to ET, and RT is 21 units long. Find the length of ST
pav-90 [236]

Answer:

ST = 12 units

Step-by-step explanation:

As RA is parallel to ET, the angle in R is equal to the angle in T, and the angle in A is equal to the angle in E, so the triangle RAS is similar to the triangle SET.

If RT is 21 units, we have that RS + ST = 21 -> RS = 21 - ST

Using a rule of three with the sides of the triangle (as they are proportional), we have:

RS / ST = AR / ET

(21 - ST) / ST = 6 / 8

4 * (21 - ST) = 3*ST

84 - 4*ST = 3*ST

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5 0
4 years ago
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