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zloy xaker [14]
3 years ago
8

45 books represent 5% of total books at library 2.

Mathematics
1 answer:
SVEN [57.7K]3 years ago
8 0
The total number of books is 900 books if 5% of the books is 45
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Which pair of numbers is opposite? Select all that apply. A. |–6| and –6 B. |–6| and 6 C. 6 and 16 D. 6 and –6 E. 0 and 6
wolverine [178]

Answer:

B and D

Step-by-step explanation:

the opposite of -6 is positive 6

3 0
3 years ago
Find the value of a in the parallelogram.
S_A_V [24]
6a-4 = 3a+54
3a = 58
a = 58/3
a= 19.333
3 0
2 years ago
Leon wants to buy a shirt that costs $80. The sales tax is 5.5%. How much is the sales tax?
GenaCL600 [577]

Answer:

4,4

Step-by-step explanation:

80×5,5%

80/1×5,5/100

4/1×5,5/5

22/5 = 4 2/5

4 2/5 = 4 4/10 = 44/10 = 4,4

7 0
3 years ago
Strontium-90 has a half-life of about 29 years. After 65 years, about how many grams of a 25-gram sample will remain?
konstantin123 [22]

Answer:

Ending Amount = Beginning Amount / 2 ^ n

where 'n' = number of half-lives n = 65 / 29 = 2.2413793103

Ending Amount = 25 g / 2^2.2413793103

Ending Amount = 25 / 4.7284892286

Ending Amount = 5.2871009727  g = 5.29 g (rounded)

Step-by-step explanation:

3 0
3 years ago
If f(x) = x^2 - 2x+3 <br> then what is f(-3)?
galben [10]

Answer:

f(- 3) = 18

Step-by-step explanation:

To evaluate f(- 3) substitute x = - 3 into f(x)

f(- 3) = (- 3)² - 2(- 3) + 3 = 9 + 6 + 3 = 18

5 0
3 years ago
Read 2 more answers
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