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Jlenok [28]
3 years ago
13

Help please .........

Mathematics
1 answer:
sdas [7]3 years ago
8 0
\frac{5x-20}{2} = 30

Thus x = 16
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Robyn uses 1 cup of blueberries to make each loal
navik [9.2K]
1 cup of blueberries = 1 loaf, so 2 cups of blueberries = 2 loaves. The answer is 2
5 0
3 years ago
Given that z is a standard normal random variable, find z for each situation. The area between 0 and z is .4750. Answer The area
algol13

Answer:

P(0

And solving for z we have

P(Z

And we can find the value for z with the following excel code:

"=NORM.INV(0.975,0,1)"

And we got z =1.96

P(Z>z)= 0.1314

And we can use the complement rule and we got:

P(Z>z) = 1-P(Z

P(Z

And we can find the value for z with the following excel code:

"=NORM.INV(0.8686,0,1)"

And we got z =1.120

P(Z

And we can find the value for z with the following excel code:

"=NORM.INV(0.67,0,1)"

And we got z =0.440

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

We want this probability:

P(0

And solving for z we have

P(Z

And we can find the value for z with the following excel code:

"=NORM.INV(0.975,0,1)"

And we got z =1.96

For the next part we want to calculate:

P(Z>z)= 0.1314

And we can use the complement rule and we got:

P(Z>z) = 1-P(Z

P(Z

And we can find the value for z with the following excel code:

"=NORM.INV(0.8686,0,1)"

And we got z =1.120

For the next part we want to calculate:

P(Z

And we can find the value for z with the following excel code:

"=NORM.INV(0.67,0,1)"

And we got z =0.440

6 0
3 years ago
High school <br> math/ geometry
Tamiku [17]

Answer:

Well a triangle itself is worth 180 degrees (Inteirior angles)

your given “a” “b” and you need to find c.

So you can subtract

A is 50

B is 55

So

<BCA= 180- 55-50

Is the answer (b)

6 0
2 years ago
Read 2 more answers
Evaluate the expression using order of operations. (24+2) ÷ 2
Reptile [31]

Answer:

The answer is 13

Step-by-step explanation:

24+2=26

26÷2=13

7 0
3 years ago
What is the surface area?<br> 8 yd<br> 8 yd<br> 7 yd<br> square yards
masha68 [24]
352 yards squared....
6 0
3 years ago
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