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3 years ago

Help!!! 5-9 show work pleasee

Mathematics

2 answers:

LiRa [457]3 years ago

6 0

On number 5 you would move the decimal to the right 2 times 97.5%
on number 6 you take the 17 out of the hundred and you end up with 17%
on number 8 you divide 2 divided by 5 and you get 0.4 and you move the decimal to the right once and you get 4%
on number 9 on only 1% lives in solar homes you just move the decimal to the left once so it would be .1

sukhopar [10]3 years ago

5 0

Number 6 is 17 percent

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Solve the system of linear equations by substitution. y=X-4 - 2x+y= 18

11Alexandr11 [23.1K]

Answer:

] y=x-4

-2x+y=18

y - x = -4

y - 2x = 18

equation [2] for the variable y

[2] y = 2x + 18

// Plug this in for variable y in equation [1]

[1] (2x+18) - x = -4

[1] x = -22

// Solve equation [1] for the variable x

[1] x = - 22

// By now we know this much :

y = 2x+18

x = -22

// Use the x value to solve for y

y = 2(-22)+18 = -26

Step-by-step explanation:

please mark me as brainlist please

4 0

2 years ago

What is 7 1/12 - 2 3/4 in simplest form

stich3 [128]

7 1/12 - 2 3/4

First we have to change mixed numbers to improper fractions

7 1/12 = 7 x 12 + 1 = 85 85/12

2 3/4 = 2 x 4 + 3 = 11 11/4

85/12 - 11/4

Now we need to find the LCD (least common denominator) for 4 and 12

4, 8, 12

12 is our LCD, so it becomes our new denominator

85/12 would stay the same because the denominator wasn't changed but for 11/4 our new denominator is 12, so our fraction will change.

11/4 = 33/12

4 goes into 12, 3 times. What you do to the bottom, you do to the top.

3 x 11 = 33

3 x 4 = 12

So, our new fraction is 33/12. Now we subtract

85/12 - 33/12 = 52/12

Now we convert back to a mixed number

52 ÷ 12 = 4 4/12 reduce

4 1/3

Hope this helps.

6 0

4 years ago

the sum of three number is 202, the second is three more than the first number, the third number is three times the second numbe

sertanlavr [38]

Answer:

x = 38

y = 41

z = 123

Step-by-step explanation:

x + y + z = =202

y = x + 3

z = 3y = 3(x + 3) = 3x + 9

x + y + z = x + x + 3 + 3x + 9 = 5x + 12 = 202

5x + 12 = 202

5x = 190

x = 38

y = x + 3 = 41

z = 3y = 123

4 0

3 years ago

Two weeks in a row, the golf course hosts a group of golfers. The second week had 10 more golfers than the first week. Use the d

Trava [24]

Answer:

Option A.

Step-by-step explanation:

From the first dot plot the given data set for week 1 is

62, 68, 68, 68, 69, 70, 70, 72, 72, 72, 75, 75, 76, 78, 78, 80, 80, 80, 89, 89

Divide the data in 4 equal parts.

(62, 68, 68, 68, 69), (70, 70, 72, 72, 72), (75, 75, 76, 78, 78), (80, 80, 80, 89, 89)

$Range=Maximum-Minimum=89-62=27$

$Median=\frac{72+75}{2}=73.5$

$Mean=\frac{\sum x}{n}=\frac{1491}{20}=74.55$

From the second dot plot the given data set for week 2 is

62, 68, 68, 68, 69, 70, 70, 72, 72, 72, 75, 75, 76, 78, 78, 80, 80, 80, 85, 86, 86, 86, 88, 88, 88, 88, 89, 89, 89, 89

Divide the data in 4 equal parts.

(62, 68, 68, 68, 69, 70, 70), 72, (72, 72, 75, 75, 76, 78, 78), (80, 80, 80, 85, 86, 86, 86), 88, (88, 88, 88, 89, 89, 89, 89)

$Range=Maximum-Minimum=89-62=27$

$Median=\frac{78+80}{2}=79$

$Mean=\frac{\sum x}{n}=\frac{2364}{30}=78.8$

The range for Week 1 is equal to the range for Week 2.

The median for Week 2 is more than the median for Week 1.

The mean for Week 2 is more than the mean for Week 1.

Therefore, the correct option is A.

6 0

3 years ago

Problem Yoda Soda is the intergalactic party drink that will have all your friends saying, "Mmmmmm, good this is!" You are throw

mash [69]

For 121212 guests we need 555 liters,for 363636 guests how many liters

Guests Soda
121212 555
363636 x

So 121212*x=363636*555
x=363636*555/121212
x=555*3
x=1665

4 0

3 years ago