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Nuetrik [128]
2 years ago
13

What is the percent decline, to the nearest whole number, of rusty patched bumble bees from 20 years ago to today?

Mathematics
2 answers:
Andrej [43]2 years ago
6 0
Sasuke is pretty cool
Deffense [45]2 years ago
6 0

Answer:

87 Percent

Step-by-step explanation:

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How do I find the measurement of angle A with 85, 10x, and 8x + 5?
Scrat [10]
The angle A with 85, 10x is a 1345
7 0
3 years ago
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Simplify 5(x - 2) - 3x + 7.
WINSTONCH [101]

5(x - 2) - 3x + 7.

First use the distributive property:

5(x-2) = 5x-10

Now you have:

5x - 10 - 3x +7

Now combine like terms to get:

2x - 3

8 0
3 years ago
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There are 20 boys and 16 girls. what is the largest number of groups that you can form such that boys and girls are distributed
ikadub [295]

Answer:

Step-by-step explanation:

First we find the GCF or Greatest Common Factor

20: 1, 2, 4, 5, 10, 20

16: 1, 2, 4, 8, 16

As you can see 4 is the GCF (Greatest Common Factor)

so, the largest number of groups are 4

Unless you are asking for how many girls and boys can be fit in each group then,

20 ÷ 4 = 5

16 ÷ 4 = 4

So, 5 boys and 4 girls are in each group.

3 0
2 years ago
When a number is decreased by 47%, the result is 20. What is the original number to the nearest tenth?
Naily [24]

Answer:

37.7

Step-by-step explanation:

n - 0.47n = 20

0.53n = 20

n = 37.7

4 0
3 years ago
In a sample of 57 temperature readings taken from the freezer of a restaurant, the mean is 29.6 degrees and the population stand
Natalka [10]

Answer:

(29.14 ; 30.06)

Step-by-step explanation:

Given that'

Sample size (n) = 57

Mean (m) = 29.6

Population standard deviation (σ) = 2.7

Confidence interval = 80%

= (1 - 0.8) / 2 = 0.1

Mean ± z * σ/√n

Using the Z probability calculator : Z0. 1 = 1.28

Hence,

29.6 ± 1.28 * (2.7 / √57)

29.6 - (1.28 * 0.3576237) ; 29.6 + (1.28 * 0.3576237)

29.142241664 ; 30.057758336

(29.14 ; 30.06)

8 0
3 years ago
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