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VARVARA [1.3K]
3 years ago
14

I really need help ASAP! The sum of 8 times a number and 15 is 7 find that number

Mathematics
1 answer:
kirza4 [7]3 years ago
3 0

Answer:

8x+15=7 8x=-8 x =-1

Step-by-step explanation:

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How many different simple random sampmes of size 5 can be obtained from a pppulation whose size is 43?​
Nesterboy [21]

Answer:

Number of random samples = 962598

Step-by-step explanation:

A random sample represents  the responses for a certain survey of a part of the population.

A sample size is the part of the population being surveyed.

For a population N the number of different random samples that can be chosen for a sample size x can be calculated as = NCx

This can be calculated as :

NCx=\frac{N!}{x!(N-x)!}

Given:

Population size = 43

Sample size = 5

Number of random samples = 43C5

⇒ \frac{43!}{5!(43-5)!}

⇒ \frac{43!}{5!(38)!}

⇒ \frac{43\times42\times41\times40\times39}{5\times4\times3\times2\times1}    [Canceling out the common terms]

⇒  962598   (Answer)

4 0
3 years ago
write the equation of a line that is perpendicular to the line y=-3/7-15 and that passes through the point (9,2)
SashulF [63]

Answer:

Step-by-step explanation:

First substitue the coordinates to the equation so

x=9, y=2

you would get

2=-3/7(9) + b

we put b because we are trying to find the new slope

multiply the two numbers above

2=-3/6/7 + b

subtract the whole number from both sides

b= 5/6/7

in equation would be

y= -3/7 + 5/6/7

Let me know if there is an error.

8 0
3 years ago
Whixh list of numbers is ordered from least to greatest?
Rzqust [24]

Answer:

B is the solution

Step-by-step explanation:

-6.53 is the furthest from 0

-6 1/4 is closer to 0

6.57 is positive and more than 0

6 3/4 is also positive and more than 6.57

8 0
1 year ago
Hai has 24 video games. Six of his games are sports related and the rest are role-playing games. Which ratio represents the numb
Ierofanga [76]
The total number of Games.....TNG=24
Sports Related Games...............SRG=06
Role Playing Games.....................RPG=18 (24-6)

The ratio of Role Playing Games to Total Number of Games=RPG:TNG
18:24
3:4 is the answer.  A ratio is actually a concept related to Division. Here in 18:24 you can divide both sides by 6 to reach the answer 3:4.


3 0
4 years ago
Read 2 more answers
Gaus method to collect 1-100
jolli1 [7]

Answer:

5050

Step-by-step explanation:

S=n*(n+1) / 2

S=100 * (100+1) /2 = 50 * 101 = 5050

6 0
3 years ago
Read 2 more answers
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