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Anarel [89]
3 years ago
13

This is 5th grade math [ 1,225 - ( 568 - 203 )] × 10 [ 1,225 - ______ ] × 10 ________ × 10 ____

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
5 0
[1,225 - (568 - 203)] x 10
[1,225 - 365] x 10
860 x 10
8,600
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Shelly sleeps for 7 hours 30 minutes in a day. For how many hours did she sleep in the month of January?
kap26 [50]

Answer:

<u>Shelly slept 232 hours and 30 minutes in the month of January</u>

Step-by-step explanation:

31 days in January, so the equation will be

31 x 7.5  ( I wrote 0.5 because 30 minutes is half a day)

= 232.5 hours

Shelly slept 232 hours and 30 minutes in the month of January

8 0
2 years ago
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Please help me with this
alexandr402 [8]

Answer:

i wish i could help-

Step-by-step explanation:

7 0
2 years ago
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Assume that the readings on the thermometers are normally distributed with a mean of 0 degrees and standard deviation of 1.00deg
IrinaVladis [17]

Answer:

Step-by-step explanation:

Hello!

The variable of interest is the readings on thermometers. This variable is normally distributed with mean μ= 0 degrees C and standard deviation σ= 1.00 degrees C.

The objective is to find the readings that are in the top 3.3% of the distribution and the lowest 3.3% of the distribution.

Symbolically:

The lower value P(X≤a)=0.033

Top value P(X≥b)=0.033

(see attachment)

Lower value:

The accumulated probability until "a" is 0.03, since the variable has a normal distribution, to reach the value of temperature that has the lowest 3.3%, you have to work under the standard normal distribution.

First we look the Z value corresponding to 0.033 of probability:

Z= -1.838

Now you reverste the standardization using the formula Z= (a-μ)/δ

a= (Z*δ)+μ

a= (-1.838*1)+0

a= -1.838

Top value:

P(X≥b)=0.033

This value has 0.033 of the distribution above it then 1 - 0.033= 0.967

is below it.

You can rewrite the expression as:

P(X≤b)=0.967

Now you have to look the value of Z that corresponds to 0.967 of accumulated probability:

b= (Z*δ)+μ

b= (1.838*1)+0

b= 1.838

The cutoff values that separates rejected thermometers from the others are -1.838 and 1.838 degrees C.

I hope it helps!

5 0
3 years ago
Convert 12/25 to a percent.
Scorpion4ik [409]

Answer:

48%

Step-by-step explanation:

100/25= 4

so

12×4/ 25×4 = 48/ 100 = 0.48

0.48 ×100 = 48%

8 0
3 years ago
A naomi's car exponentially depreciates at a rate of 8% per year. if nina bought the car when it was 4-years old for $16,500, .
stich3 [128]

The original price of the car before 4 years will be $23,032.

<h3>What is an exponent?</h3>

Consider the function:

y = P (1 ± r) ˣ

Where x is the number of times this growth/decay occurs, P = original amount, and r = fraction by which this growth/decay occurs.

If there is a plus sign, then there is exponential growth happening by r fraction or 100r %

If there is a minus sign, then there is exponential decay happening by r fraction or 100r %

A Naomi's car exponentially depreciates at a rate of 8% per year.

If Nina bought the car when it was 4 years old for $16,500.

Then the original price will be

16500 = P(0.92)⁴

16500 = 0.716P

       P = $ 23,032

More about the exponent link is given below.

brainly.com/question/5497425

#SPJ1

3 0
2 years ago
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