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sineoko [7]
3 years ago
8

Find z such that 97.5% of the standard normal curve lies to the left of z. (Enter a number. Round your answer to two decimal pla

ces.)
Mathematics
1 answer:
fomenos3 years ago
6 0

Answer:

z=1.96

Step-by-step explanation:

Using normal distribution table or technology, 97.5% corresponds to z=1.959964, generally denoted z=1.96, or 1.96 standard deviations above the mean.

(above value obtained from R)

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Trig if line segment AB =20 and line segment AC=8, find
Nina [5.8K]

Answer:

23.6 or A

Step-by-step explanation:

We have sin already. 8/20

We use inverse sin of 0.4 (8/20)

The answer of inverse sin is 23.57817848

or 23.6

8 0
3 years ago
A home improvement store normally sells 20-foot extension ladders for $225. This week the ladders are discounted by 20%. What is
Fantom [35]

Answer:

The answer is 180

Step-by-step explanation:

So to start off you have to turn 20% into a decimal and that is .20.

Next  you need to mutiply 225 and .20 and you will get 45 (that means it is $45 off)

Subtract 45 fro 225 and that is your answer.

You now pay $180 for the 20 foot extension ladder.

5 0
3 years ago
What is 63 divided by 28
Mariana [72]

Answer:

2.25

Step-by-step explanation:

63 \div 28 =  \frac{63}{28}  =  \frac{9}{4}  = 2 \frac{1}{4}   = 2.25

4 0
3 years ago
Read 2 more answers
Why do whole numbers raised to an exponent get bigger while fractions raised to an exponent get smaller
Brilliant_brown [7]

Answer:

when you multiply a whole number by itself it will obviously get bigger.

4 to the 2nd power equals 16 because 4x4 = 16

if you were to multiply a smaller number though, it wouldn't get as big.

Each number you put to the same exponent will not get bigger at the same rate since each number isnt being multiplied by the same thing.

ex. 4 and 6 are raised to the second power both dont get multiplied by the same number 4 is multiplied by 4, and 6 by 6, therefore the bigger the number the bigger it grows.

Fractions get smaller for this reason when you have the fraction 2/3 raised to the second, both numbers must be raised. 2 to the second equals 4 while 3 to the second is 9.

1/2 to the second would then equal 1/4 since 1 to the second equals 1 and 2 to the second equals 4.

Step-by-step explanation:

5 0
3 years ago
A goat is tied to one corner of a rectangular shed in a large field full of grass. The rope is 3 yards long and a plan view ( fr
sertanlavr [38]

Answer:

the question by his by his by his by

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3 years ago
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