All categories

3 years ago

Find the values of x and y

Mathematics

1 answer:

Liono4ka [1.6K]3 years ago

7 0

Answer:

7x-37=4x+8

3x=45

x=15

8y-48 = 3y + 52

5y = 100

y=20

Answer: x=15, y=20

You might be interested in

Sara sold half her comic books and then brought 9 more.She now has 15.

Andrew [12]

_6
(15-9)×2=12, she began with 12 comic books, X=12

5 0

3 years ago

________ is a fundamental difference between the t statistic and a z-score

chubhunter [2.5K]

Answer:

Step-by-step explanation:

- The Z-score allows you to decide if your sample is different from the population mean. In order to use z, you must know four things:

The population mean.
The population standard deviation.
The sample mean.
The sample size.

- Usually in stats, you don’t know anything about a population, so instead of a Z score you use a T-Test with a T Statistic.

- The major difference between using a Z score and a T statistic is that you have to estimate the population standard deviation. The T test is also used if you have a small sample size (less than 30).

6 0

3 years ago

ILL GIVE BRAINLIEST HELP PLEASE!!! I only need the last question answered the formula is y=1.56x+1.29

denis-greek [22]

Answer:

i got 32 weeks??

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

A pizza costs $18. a soda costs $2.50 . Tax is 10%. What is the total spent

horrorfan [7]

18+2.50=20.50 so tax is 10% so you can put that into a calculator as 20.50*0.10 which equals 2.05 so just add 20.50 and 2.05 which is 22.55 is your final answer

6 0

3 years ago

A rack of 15 billiard balls is shown. If one ball is selected at random, determine the odds against it containing a number grea

andre [41]

Using the probability and odds concepts, it is found that the odds against it containing a number greater than or equal to 7 is $\frac{2}{3}$ .

A probability is the number of desired outcomes divided by the number of total outcomes.
An odd is the number of desired outcomes divided by the number of non-desired outcomes.

In the rack, there are 15 balls, numbered from 1 to 15. Of those, 6 are less than 7(against it containing a number greater than or equal to 7 is equivalent to it containing a number less than 7), thus:

There are 6 desired outcomes.
There are 9 non-desired outcomes.

The odd is:

$\frac{6}{9} = \frac{2}{3}$

The odds against it containing a number greater than or equal to 7 is $\frac{2}{3}$ .

A similar problem is given at brainly.com/question/21094006

7 0

3 years ago