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postnew [5]
3 years ago
7

The number of library books increased by 20% after it bought new books in May. The number increased by another 20% after someone

donated 300 more books in June. Find the number of books in the library before it bought new books in May.
Please help I'm confused!!
Mathematics
1 answer:
anygoal [31]3 years ago
4 0

Answer:

               

Step-by-step explanation:

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mr henderson mixed 3.732g of chemical A, 13.902 of chemical B and 5.208g of Chemical C to make 3 does of medicine, About how muc
Dafna11 [192]

Answer:

22.8 grams

Step-by-step explanation:

To find total amount of medicine, we have to add all the 3 quantities of Chemical A, Chemical B, and Chemical C.

Before we do that, we have to round up each quantity to the nearest tenths.

Nearest tenths means we can take "1 digit" after the decimal point. For that we use rounding rules.

If the 2nd digit to the right of decimal is 5 or greater, we round up the 1st digit to the next whole number. If the 2nd digit is less than 5, we keep the 1st digit same.

So, using that we round up each of the three numbers as shown:

3.732 becomes 3.7 (since 3 is less than 5, we keep the 7)

13.902 becomes 13.9 (since 0 is less than 5, we keep 9)

5.208 becomes 5.2 (since 0 is less than 5, we keep 2)

Now we add:

3.7 + 13.9 + 5.2 = 22.8 grams

6 0
3 years ago
Find the sum of the first 7 terms of the following series, to the nearest integer.
Virty [35]

Answer:

r = 2.5 \\ sum =  \frac{a( {r}^{n - 1} )}{r - 1}  \\  =  \frac{125( {2.5}^{7 - 1} )}{7 - 1}  \\  =  \frac{30517.6}{6}  \\  = 5086.3

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3 years ago
If one meter is approximately 3.28ft how many meters are in 20 ft
shusha [124]

Answer:

I think the answer is 6.096 Meters.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please help if right I will give BRAINLIEST and 25 points
Allushta [10]
The total area is 448 in^2. Each triangle is 56 in^2 and each parallelogram is 140 in^2
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You flip a coin eight times. find the number of possible outcomes in the sample space.
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2( coin faces) 8( number of times)
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