Need help for both 19 and 20

Mathematics

1 answer:

Mazyrski [523]3 years ago

8 0

Add the sum and than subtract the sum

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Step-by-step explanation:

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3 years ago

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What is the approximate area of the shaded sector in the circle shown below?

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Answer:

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3 years ago

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There are 28 nonfiction books and 35 fiction books in the teacher's collection. Which of the following expresses the ratio of no

Lostsunrise [7]

The answer is B) 4:5

First write the ratio out. To find the simplified expression, divide by the greatest common factor (GCF). In this case, the GCF of 28 and 35 is 7.

28:35
--- ----
7 7
=4:5

4:5 is the simplest form because you cannot simplify it further.

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3 years ago

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PLEASE i need help

____ [38]

1. 8^3 * 8^2, 8^5, and (2^3)^5
2. 6^9, and 6^5 x 6^4

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3 years ago

PolarNik [594]

Question 1:

5z – 9 = 36

5z = 45

z = $\frac{45}{5}$

z = 9

Hence, the answer is D.

Question 2:

5(2z + 4) = 0

10z + 20 = 0

10z = -20

z = $\frac{-20}{10}$

z = -2

Hence, the answer is A.

Question 3:

4a + 3(a + 1) = 24

4a + 3a + 3 = 24

7a = 21

a = $\frac{21}{7}$

a = 3

Hence, the answer is B.

Question 4:

3(4x + 5) = 12

12x + 15 = 12

12x = 12 - 15

12x = -3

x = $\frac{-3}{12} = - \frac{1}{4}$

Hence, the answer is A.

Question 5:

4x – 8 – 4x = 9

-8 ≠ 9

Hence, the answer is A.

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3 years ago

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