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kondor19780726 [428]
3 years ago
9

2. Which of the following is a composite number? A. 139 B. 91 C. 13 D. 29

Mathematics
2 answers:
love history [14]3 years ago
8 0
7 x 13 = 91.......so 91 is not a prime, it is a composite
Musya8 [376]3 years ago
6 0
The composite number is A.91
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Andrea earned 200 points on a school assignment. Because the
Lera25 [3.4K]

Answer:

It was approximately a 9% decrease. (If you need to round to the nearest tenth, 9.1. If you need to round to the nearest hundredth, 9.10).

Step-by-step explanation:

I am going to assume that the question means that Andrea could have earned 220 points on the assignment, but instead because the assignment was late, she was marked down 20 points. (Reduced to 20 points is kind of awkward wording).

Given that, 20 divided by 220 comes out to 0.0909 repeating.

0.09, as a percentage, is 9%. (Again, 0.0909, 9.09%, could be rounded up to 9.1%).

Hope this helps!

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2 years ago
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7 0
2 years ago
2(3b-1)=40<br> Simplify.
timofeeve [1]

Answer:b=7

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

2(3b−1)=40

(2)(3b)+(2)(−1)=40(Distribute)

6b+−2=40

6b−2=40

Step 2: Add 2 to both sides.

6b−2+2=40+2

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Step 3: Divide both sides by 6.

6b/6=42/6

b=7

6 0
3 years ago
PLEASE HELP!
Luba_88 [7]
2x - 2y = 2

2x - 2 x 0 = 2

2x - 0 = 2

2x = 2

x = 1

2x - 2y = 2

2 x 0 - 2y = 2

y = - 1
3 0
3 years ago
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Nezavi [6.7K]

There would be 450 rabbits last year.

Since 900 is double 450, 200% of 450 is 900. (450 would be 100%, so you would double it).

3 0
3 years ago
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