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3 years ago

PLZ HELP!!!! WILL MARK BRAINLYIST!!!!

Mathematics

1 answer:

pychu [463]3 years ago

3 0

Answer:

* 5+2k+n

Step-by-step explanation:

Combine all like terms:

7-2 = 5

5k-3k = 2k

n = n

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The tuft bind strength of a synthetic material used to make carpets is known to have a mean of 100 lb and standard deviation of

emmasim [6.3K]

Answer:

The null hypothesis is: $H_{0}: \mu = 100$

The alternative hypothesis is: $H_{a}: \mu > 100$

Step-by-step explanation:

At the null hypothesis, we test if the mean is equal to a certain value.

At the alternate hypothesis, we test if the mean is less than, more than, or different from the value tested at the null hypothesis.

The tuft bind strength of a synthetic material used to make carpets is known to have a mean of 100 lb and standard deviation of 20 lb.

This means that the null hypothesis is: $H_{0}: \mu = 100$

Could it be that the average tuft strength is above 100 lb?

The world above means that the appropriate alternative hypothesis is: $H_{a}: \mu > 100$

3 0

3 years ago

4. Which of the following sets of ordered pairs is a function?

alisha [4.7K]

Answer:

Step-by-step explanation:

Thing that x = a kid and y = it's biological mother

To be a function you need for each x to have only one y !

a. {(x= -3, y = -2), (x= -1, y= 3), (x=0, y= -2), (x= 3, y= 4)} Is a Function

b. {(x= 0, y= 1), (x= 3, y= 2), (x= 5, y= -3), (x= 0, y= 2)} Not a Function because kid x=0 has two biological mothers y=1 and y=2.

c. {(x= -7, y= -7) (x= -2, y= 5),(x= -1, y= 6).(x= -2, y= -5)}Not a Function because kid x= -2 has two biological mothers y= 5 and y= -5

d. {(x= -4, y= -7), (x= -9, y= 5), (x= 4, y= -2), (x= -9, y= 0)} Not a Function because kid x= -9 has two biological mothers y= 5 , and y= 0

6 0

3 years ago

Find the equation of the line 7y=-2x, passing though (8,-2). Express your answer in standard form.

damaskus [11]

Answer:

The answer would be 2x + 7y = 30

Step-by-step explanation:

First we need to find the slope of the original line. We can do this by solving for y.

7y = -2x

y = -2/7x

Now we can use that slope and the point in point-slope form to get the answer. You'll need to solve for the constant.

y - y1 = m(x - x1)

y + 2 = -2/7(x - 8)

y + 2 = -2/7x + 16/7

2/7x + y + 2 = 16/7

2/7x + y = 30/7

2x + 7y = 30

5 0

3 years ago

50 points What is the value of g? 25(g−7)=3 Enter your answer as a mixed number in simplest form in the box. g =

atroni [7]

Answer:

$7\frac{7}{25}$

Step-by-step explanation:

hey there,

< 25(g-7) = 3

Since we have parentheses, let's get rid of them by multiplying.

25(g) - (25)(7) = 3

(I just expanded the parentheses. If you don't understand how I did this, then feel free to ask me!!)

Continue simplifying:

25g - 175 = 3

Leave the variable on one side and the numbers on the other side:

25g = 3 + 175

25g = 178

g = $\frac{178}{25}$

This is an improper fraction and it cannot be simplified any further since 25 can only be divided by 5 or 25 and 178 can't be divided by 5 or 25.

Since your question is asking for a mixed fraction, let's make it into one. I hope you already know how to do this but as I said, if you don't, then please ask me!

g = $\frac{178}{25} = 7\frac{7}{25}$

$7\frac{7}{25}$ is your final answer. >

Hope this helped! Feel free to ask anything else.

6 0

4 years ago

Y= x + 3 y= -1/2x - 3 plot 2 lines on the graph

Ira Lisetskai [31]

Answer:

y = x + 3 is the Green Line

y = -1/2x -3 is the Blue Line

4 0

3 years ago