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Gre4nikov [31]
2 years ago
9

On a test that has a normal distribution, a score of 49 falls two standard deviations

Mathematics
1 answer:
julsineya [31]2 years ago
5 0

Answer:

57   mean

Step-by-step explanation:

x = mean

(x - 49 )  = 2 ( 61 -x)

x = 57

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dmitriy555 [2]
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3 years ago
The sum of the angle measures of a polygon with s sides is 2880. Find s. A. 20 B. 16 C. 17 D. 18
siniylev [52]
I think the answer is D. 18

8 0
3 years ago
Angle A and angle B are complementary. m Angle A = 54 and M angle B = 2x+2. What is the m angle B
Gnom [1K]

Answer:

m=17

Step-by-step explanation:

Complementary means they add to equal 90 degrees.

1) 90-A=36

2)36=2x+2

3) Subtract 2 from both sides, 34=2x

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4 0
3 years ago
Translate the sentence into an equation. Seven times the sum of a number and 4 is equal to 9. Use the variable b for the unknown
zzz [600]

Answer:

7 ( b + 4 ) = 9

Step-by-step explanation:

Let the number be = b

It is given that the :

The number is added to 4.

And the value is equal to 9 when it is 7 times the sum of the number, b and 4.

Thus according to the question, the sentence can be translated in equation form as :

7 ( b + 4 ) = 9

Thus in other word, we can say that the addition of (b + 4) when it is multiplied for 7 times, we get the result as 9.

4 0
2 years ago
How can you use exponential growth or exponential decay to model the populations of endangered species?
hammer [34]

Answer:

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Read 2 more answers
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