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3 years ago

What number could replace the □?

Mathematics

2 answers:

tester [92]3 years ago

6 0

8*15=15*8

the answer is c.

g100num [7]3 years ago

5 0

Hello there! The answer is c. 15!

Basically, the question is asking you, what can you multiply 8 by to get the same result as when you multiply 8 by 15?

Knowing this, you can come to the quick conclusion that the answer is 15, since you are multiplying 8 by the same number in both cases, meaning you will get the same result!

I hope this helps and have a great day!

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GrogVix [38]

The numbers that are divisible by 1 and the number itself is called a prime number. Eg: 1,2,3,5,7,11,13,17,19

6 0

3 years ago

Write the equation of the line that passes through the points (8,-2)(8,−2) and (5,5)(5,5). Put your answer in fully reduced poin

VladimirAG [237]

Answer:

The the equation of the line through the points (8, -2) and (5, 5) in slope-intercept form is

$y=-\frac{7}{3} x+\frac{50}{3}$

Step-by-step explanation:

Let's start by calculation the slope of the line by finding the slope of the segment that joins the two given points (8, -2) and (5, 5):

$slope=\frac{y_2-y_1}{x_2-x_1} \\slope=\frac{5-(-2)}{5-8}\\slope=\frac{7}{-3} \\slope=-\frac{7}{3}$

Now we use this slope in the general slope-intercept form of a line;

$y=mx+b\\y=-\frac{7}{3} x+b$

and then we calculate the value of the intercept "b" by using one of the given points through which the line must pass (for example (5,5) ), and solving for b:

$y=-\frac{7}{3} x+b\\5=-\frac{7}{3} (5)+b\\5=-\frac{35}{3} +b\\b=5+\frac{35}{3}\\b=\frac{50}{3}$

The the equation of the line is

$y=-\frac{7}{3} x+\frac{50}{3}$

5 0

4 years ago

Mrs. Smith took her family and friends to the movies. There was a total of 15 people. Child tickets cost 5$ and adult tickets co

SCORPION-xisa [38]

Answer: children= 8, adult= 7

Step-by-step explanation:

Let the number of children be x

Let the number of adults be y

There was a total of 15 people. This can be represented as:

x + y = 15 .......... equation i

Child tickets cost 5$ and adult tickets cost 10$. She then spent a total of 110$. This can be represented as:

5x + 10y = 110 ............. equation ii

Combine both equations

x + y = 15 ........... equation i

5x + 10y = 110 .......... equation ii

Multiply equation I by 5

Multiply equation ii by 1

5(x + y = 15)

1(5x + 10y = 110)

5x + 5y = 75 .......... equation iii

5x + 10y = 110 ........ equation iv

Subtract equation iv from iii

-5y = -35

y = 35/5

y = 7

Number of adults is 7

Since x + y = 15

x = 15 - 7

x = 8

Number of children is 8

3 0

3 years ago

Please help this is a test!!!!

Marianna [84]

Answer:

the answer for this question is 18

5 0

3 years ago

I need help with 12-19!! giving BRAINLIEST

Usimov [2.4K]

Answer:

12. whole, integer, rational

13. rational, integer, repeating

14. irrational

15. rational, integer, whole

16. rational, whole, natural, rational

17. irrational

18. rational, integer, natural, whole

19, natural, whole, integer, rational

Step-by-step explanation:

6 0

3 years ago