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3 years ago

What is the formula for midpoint, perpendicular slope, and equation of a perpendicular bisector

Mathematics

1 answer:

LUCKY_DIMON [66]3 years ago

5 0

This are the formulas hope they help

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What is the value of x in the equation 3x-1/9y=18, when y=27?

natulia [17]

Hi Vanessa

3x -1/9 (27) =18

3x - 27/9 =18

3x- 3 =18

Add 3 to both sides

3x-3+3=18+3

3x=21

Divide both sides by 3

3x/3= 21/3

x= 7

The value of x is 7

Now let's check if my answer is correct

To check it we gonna replace x by 7 and 27 for y

(3)(7) -1/9 (27) = 18

21 -1/9 (27)=18

21- 27/9 = 18

21- 3 = 18

18 = 18

The answer is good and I hope its help:0

5 0

3 years ago

A survey of 32 different gas stations in Texas found the average price of gasoline to be $3.19 a gallon with a sample standard d

Leni [432]

Answer:

The value of test statistic is -4.1247

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $3.26 a gallon

Sample mean, $\bar{x}$ = $3.19 a gallon

Sample size, n = 32

Sample standard deviation, σ = $0.096

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 3.26\text{ dollars a gallon}\\H_A: \mu < 3.26\text{ dollars a gallon}$

We use one-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{3.19 - 3.26}{\frac{0.096}{\sqrt{32}} } = -4.1247$

Thus, the value of test statistic is -4.1247

3 0

2 years ago

1) ? x (-9) = -36

diamong [38]

Answer:

1. 4

2. 4

3.7

4.-2

5.-8

6. -5

7.5

8.24

3 0

3 years ago

Read 2 more answers

what is another way to write 297.3. Fill in: 2hundreds, 9tens, 5 ones + __________tenths I tried 2.3, but was told that was inco

Schach [20]

Maybe it is 23 tenths ???

7 0

2 years ago

CAN SOMEONE PLEASE ANSWER THESE QUESTIONS ITS 8TH GRADE WORK

Kisachek [45]

1. (-2,-5)
2. (-3,8)
3. (-8,-9)
4. (-2,-7)

5 0

3 years ago