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11Alexandr11 [23.1K]
3 years ago
13

The high was 20. the low was -15. what is halfway between high and low?

Mathematics
1 answer:
SSSSS [86.1K]3 years ago
5 0
I think its 19. should be right
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Assume that the random variable X is normally​ distributed, with mean mu equals 100 and standard deviation sigma equals 20. Comp
TEA [102]

Answer: 0.2119

Step-by-step explanation:

We assume that the random variable X is normally​ distributed.

Given : Population mean : \mu=100

Standard deviation : \sigma=20

Z-score : z=\dfrac{x-\mu}{\sigma}

Then, z-score corresponds to 116

z=\dfrac{116-100}{20}=0.8

By using the standard normal distribution table for z , we have

P(x>116)=P(z>0.8)=1-P(z\leq0.8)

=1-0.7881446\approx0.2119

Hence, the required probability = 0.2119

4 0
4 years ago
What answer choice is this and step by step explanation?
cupoosta [38]

Answer:

2.5/yr

Step-by-step explanation:

Every year the height of the tree goes up by 2.5 ft.

You can tell that by doing this

12-9.5=2.5

9.5-7= 2.5

7-4.5= 2.5

I hope this helps! tell me if I need to explain more!

6 0
4 years ago
I need help asap ;u;
xxTIMURxx [149]

Answer:

D. $56

Step-by-step explanation:

Sandra's taxable income is $39,250.

That amount works for range 2 ($39,250 - $39,300), so her tax is $5,944.

Sandra paid $6,000 in FWT (federal withholding tax), which is greater than $5,944, so we need the refund here.

Subtract 5,944 from 6,000 to get the refund.

6,000 - 5,944

We can go on ahead and just make this 100 - 44 (5,900 - 5,900 = 0).

100 - 44

Her refund is $56.

3 0
3 years ago
Hey what's <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B169%7D%20%20%5Ctimes%202" id="TexFormula1" title=" \sqrt{169} \ti
WITCHER [35]

Answer:

the square root of 169 is 13 then ×2

26

I hope I am correct mate

enjoy your day

#Captainpower

4 0
3 years ago
Read 2 more answers
Describe the error Sarah made when simplifying the expression shown. -5(x-2)=-5x-10
prisoha [69]
The answer will be 1100283738292
8 0
3 years ago
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