All categories

3 years ago

HELPPPPPPPP I NEED THE ANSWER PLZZZZZZZZZZZ!!!!!!!!!!! the solutions plz

Mathematics

1 answer:

Vesnalui [34]3 years ago

6 0

Answer:

c = -4.5
z = 20
x = -12
a = -4/7

Step-by-step explanation:

A way to do this that will always work is ...

eliminate parenthses and collect terms
subtract any constants from the left side
subtract any variable terms from the right side
divide by the coefficient of the variable

8c -11 -6c = -2
2c -11 = -2
2c = 9
c = 4.5

3z +4 -2z -9 = 15
z -5 = 15
z = 20

12 -4x +18 = 36 +4x +18 -6x
30 -4x = 54 -2x
-4x = 24 -2x
-2x = 24
x = -12

36a -9a -5 = 6a -17
27a -5 = 6a -17
27a = 6a -12
21a = -12
a = -12/21 = -4/7

You might be interested in

I'm really struggling with this assignment <br>This is going to Close by tomorrow please help me

Gemiola [76]

Answer:

5a) see work below

5b) false

6) a = 1, b= -1

Step-by-step explanation:

work in picture attached

8 0

3 years ago

Stephen does not like yogurt very much, but he loves

Mrac [35]

5+2+3=10 total snacks
5/10 or 1/2 are yogurts so 1/2 is the chance everyday
1/2×1/2×1/2=1/8 this is the chance Stephen gets yogurt 3 consecutive days so 1-1/8=
7/8 chance he doesn't get yogurt three consecutive days

8 0

4 years ago

What is that answer please?

zlopas [31]

(99(82)+99)/100 is the later mean of scores= 82.17
And the current mean of 82

82.17-82= 0.17 is the difference between the mean scores

6 0

3 years ago

Which of the following best represents the location of point A on the number line?

Andrew [12]

Point A is represented by -1 1/4

7 0

3 years ago

of 320 consumers polled, some purchase blu-ray movies, some only purchase movies on dvd, and some do both. if 300 people polled

Helga [31]

Answer:

20 people only buy dvds.

Step-by-step explanation:

There are two groups in this problem. One group of people that buys dvds and one that buys blu rays. The total amount of people who buy blu rays is 300, but there's an intersection between the groups and the size of this is 280 people who actually buy both. In order to find out how many people only buy DVDs we first need to figure out how many only buy blu-rays. That is:

people who only buy blu rays = people who buy blu rays - people who buys blu rays and dvds

people who only buy blu rays = 300 - 280 = 20

We can now calculate the amount of people who only buy dvds and that is:

people who only buy dvds =total amount of people - ( people who only buy blu rays + people who buy both)

people who only buy dvds = 320 - (20 + 280) = 320 - 300 = 20 people

3 0

4 years ago