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Mekhanik [1.2K]
2 years ago
8

Find the unit rate for the following. REMEMBER, UNIT RATE IS HOW MUCH IS ONE OF SOMETHING.

Mathematics
1 answer:
NISA [10]2 years ago
5 0
PPG: 140/5 = 28 or 28:1 game
MPG: 504/12 = 42 or 42:1 gallon
$ per bag: 8.97/3 = $2.99:1 bag
Good luck to you!
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A driving school wants to find out which of its two instructors is more effective at preparing students to pass the state’s driv
jonny [76]

Answer:

Yes, there is evidence to support that claim that instructor 1 is more effective than instructor 2

Step-by-step explanation:

We can conduct a hypothesis test for the difference of 2 proportions.  If there is no difference in instructor quality, then the difference in proportions will be zero.  That makes the null hypothesis

H0:  p1 - p2 = 0

The question is asking whether instructor 1 is more effective, so if he is, his proportion will be larger than instructor 2, so the difference would result in a positive number.  This makes the alternate hypothesis

Ha:  p1 - p2 > 0

This is a right tailed test (the > or < sign always point to the critical region like an arrowhead)

We will use a significance level of 95% to conduct our test.  This makes the critical values for our test statistic: z > 1.645.  

If our test statistic falls in this region, we will reject the null hypothesis.

<u>See the attached photo for the hypothesis test and conclusion</u>

7 0
3 years ago
Do u think temperature and pressure have any effect on gasses ​
larisa [96]

Answer:

Gay Lussac's Law - states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature. If you heat a gas you give the molecules more energy so they move faster. This means more impacts on the walls of the container and an increase in the pressure.

Step-by-step explanation: An increase in the number of gas molecules in the same volume container increases pressure. A decrease in container volume increases gas pressure. An increase in temperature of a gas in a rigid container increases the pressure

3 0
3 years ago
Read 2 more answers
15 3/14+ 24 1/14+ 12 2/7+ 12 2/7+ 10 1/7 +10 1/7+ 35 3/7=​
lesantik [10]

Answer:

it is :119.5714

Step-by-step explanation:

15 3/14+24 1/14+12 2/7+12 2/7+10 1/7+10 1/7+35 3/7=

step by step now:

15 3/14+24 1/14+12 4/14+12 4/14+10 2/14+10 2/14+35 6/14=118 22/14=118+1.5714=119.5714

5 0
3 years ago
Which number is located at Point A on the number line?<br> –4 my answer<br> 4<br> –6<br> 6
OLEGan [10]

Answer:

-6

Step-by-step explanation:

you have to look at the numbers next to it

7 0
3 years ago
Which equation could match the table?
DochEvi [55]

Answer:

y=2x+3

Step-by-step explanation:

in third line x = 0 y=2×0+3 =3

5 0
2 years ago
Read 2 more answers
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