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2 years ago

Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to determine

Mathematics

1 answer:

Nady [450]2 years ago

5 0

The z score of 1.19 corresponds with a probability of 0.8830.

<h3>What is z score?</h3>

The z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:

z = (raw score - mean) / standard deviation

Given that:

P(Z ≤ c) = 0.8830

Froom the normal distribution table:

c = 1.19

The z score of 1.19 corresponds with a probability of 0.8830.

Find out more on z score at: brainly.com/question/25638875

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Help asap plsss!!!!!!!!!!!

Harman [31]

To find x we are gonna use the cosine formula.

Cos 0 = adj/hyp

0 represents theta

Cos 0 = adj/hyp

Cos 0 = 25/40

Convert 25/40 to decimal from

25/40 = 0.625

On a scientific calculator press the key “2nd F” or “Shift” then “cos”(which would give cos inverse) then type 0.625 equal.

Cos-1 0 0.625

= 51.31 degrees

x is therefore 51.3 degrees to the nearest tenth

3 0

3 years ago

Please help find the value of x and show me steps so I can try to learn it!!

fiasKO [112]

Answer:

$x = 30$

Step-by-step explanation:

If we take a look at the given picture, we can see that both sides are almost completely identical, so they must almost have the same value.

Let us do the plug in. Keep in mind that the angle is obtuse, meaning over 90 degrees, and angle identical or lower than 90 is incorrect.

$x=18$

$(x + 90)°$

$(18 + 90) = 108$

True.

$4x$

$4(18) = 72$

False. Meaning the 18 would not work.

x = 22.5

$(22.5 + 90) = 112.5$

True.

$4(22.5) = 90$

False. Meaning that 22.5 does not work.

x = 30

$(30+90) = 120$

True.

$4(30) = 120$

True. Meaning that 30 is the answer and can work.

x = 54

$(54+90) = 144$

True.

$4(54) = 216$

False. Although the angle is larger than 90, 180 is a straight line, and we can see that the angles given are not straight lines or greater.

5 0

3 years ago

Devin is on his school's swim team. During his 2-week winter break, he swims 30 laps each week to stay in shape. If each lap is

tamaranim1 [39]

I think... 1500

Step-by-step explanation:

multiply 30 and 25 then times 750 as your answer by 2 to get 1500

7 0

3 years ago

A pizza is divided into 12 pieces. Glenn and Sophie each ate 1/4 of the pizza on Thursday. The next day Sophie ate 1/3 of the pi

Natali5045456 [20]

Answer:

6 slices

Step-by-step explanation:

The full pizza is 12 pieces. Divide 12 by 4 to find out how much she ate on Thursday. 1/4 of 12 is 3 so she ate 3 slices on Thursday. Subtract 3 from 12 to find out how much was left for the next day. There were 9 slices the next day. Next, divide 9 by 3 to find out what 1/3 of 9 is. 1/3 of 9 is 3 so subtract 3 from the 9 slices. 6 slices are the original pizza remain.

3 0

3 years ago

Can someone please help me with this math problem:)

Dennis_Churaev [7]

Answer:

x = 20

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

$\frac{x}{12}$ = $\frac{15}{9}$ ( cross- multiply )