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olganol [36]
3 years ago
11

Geologists recorded the duration (in seconds) of over 500 recent eruptions of the Old Faithful geyser in

Mathematics
1 answer:
Gre4nikov [31]3 years ago
5 0

Answer: C (A unimodal histogram, and the dotted line lands at 210)

Step-by-step explanation:

Khan Academy - “The sample size is reasonably large (n = 30 _> 30), so the sampling distribution of x will be approximately normal even though the population isn’t.”

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Mr. Inahurry sold his house for $27,000, which is a 10% loss over what he originally paid for it. What did he pay for the house
Ainat [17]

Answer: $30,000

Step-by-step explanation:

If Mr. Inahurry had a 10% loss, it means that he paid X for the house and only got back 90% (100% - 10%) of what he paid.

This way X . 90% = 27,000

               X . 0.90 = 27,000

               X = 27,000/0.9

               X = 30,000

Counter-proof: 30,000 . 10% = 30,000 . 0.10 = 3,000

                          30,000 - 3,000 = 27,000

4 0
3 years ago
Help T-T plz (14 points)
olganol [36]

Answer:

The answer is 10.5 or 10 1/2

Step-by-step explanation:

1) A=LxW

2) the height is given but you do not have the width So Divide.

3) first turn the fraction into decimals

H= 12 1/4= 12.25

A= 128 5/8= 128.625

4) 128.625 divided by 12.25 Give you 10.5

5) you can change 10.5 into a fraction 10 1/2

hopes this helps.

8 0
3 years ago
HURRY PLZ!
timama [110]

Answer:

D

Step-by-step explanation:

f^{-1}(x) means the inverse. The inverse is the function reflected over the y=x line. This means the values have been reversed. (x,y)-->(y,x). We are looking for a point that has reversed values from the table.

The table has (1.-5) so the inverse is (-5,1) or D.

7 0
3 years ago
On a california map 1/4 of an inch represents 20 miles how many miles does 3 1/4 inches represent
yulyashka [42]
240 miles
I hope that helps
4 0
3 years ago
1. Jackie is a toll booth employee. One day, she wrote the expression: 0.75m = 15.75
Yanka [14]
Question B) you want to take 0.75, divide it to both sides and you get m= 21          0.75m=15.75      m =  21                                                                                     ___________  =                                                                                                          0.75             
4 0
3 years ago
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