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Anit [1.1K]
4 years ago
12

What is the answer. What is x

Mathematics
1 answer:
olga_2 [115]4 years ago
7 0
The answer for x is 115
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What is the standard deviation of a normal distribution, whose mean is 35, in which an x-value of 23 has a z-score of -1.63?
Dvinal [7]

Answer:

7.36

Step-by-step explanation:

z-score is:

z = (x − μ) / σ

Given that z = -1.63, x = 23, and μ = 35:

-1.63 = (23 − 35) / σ

σ ≈ 7.36

6 0
3 years ago
Evaluate f(-7). f(x)=3x^2<br><br> a) -441<br> b) -147<br> c) 78<br> d) 147
vlabodo [156]

Answer:

a

Step-by-step explanation:

replace x with -7

7 0
3 years ago
How to properly solve this question
sveta [45]
Well there is no question that i can see so if this is a riddle then it is already properly solved due to no question at all
7 0
4 years ago
2. Husein used a ladder to climb up a tree. The
Harman [31]
Answer:

7.28 m

Explanation:

Use the Pythagorean Theorem. The length of the ladder is the hypotenuse.

a^2 + b^2 = c^2
a = 2, b = 7, c = ?

Plug in the values into the equation.

2^2 + 7^2 = c^2
4 + 49 = c^2

Square root both sides to get c = 7.28
5 0
4 years ago
One pizza was cut into 12 pieces. Eddie ate 1/12 and Melanie ate 1/12. Mom ate 1/6 and dad ate 1/4. Albert ate 1/6 of the pizza.
Akimi4 [234]

Answer:

I thinks it's A

Step-by-step explanation:

1) 12:6×1=2

2) 12:4×1=3

3) 1+1+2+3+2=9

4) 12-9=3

5 0
3 years ago
Read 2 more answers
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