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2 years ago

I need help i need to get these notes done asap please help.

Mathematics

2 answers:

bixtya [17]2 years ago

7 0

Answer:

Youre answer would be ( 2,8) i really hope this is right.

Step-by-step explanation:

if u can mark me brsinlist bc i tried

marin [14]2 years ago

3 0

Its hard to tell what you're trying to solve, but if you are trying to find the point on the graph the way to find it is what I wrote

Answer:

The point on the graph is (4,3)

Step-by-step explanation:

Go to the x axis. Follow it alllllllll the way to the rught until you reach the line that the point is on. Count how many squares you go up. That number should be 1-2-3-4. it is 4 points up, which is your answer for x.
To find 'y', go up the y axis until it goes to the line the point is on, and count how many squares you go to the right. That answer should be 1-2-3, which is your answer.

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The mean of the data set is 40 and one standard deviation is 5. About what percent of the numbers fall between 35 and 50?

Nataly [62]

Answer:

The correct option is D. 81.8%

Step-by-step explanation:

Mean of the data set is given to be 40

⇒ μ = 40

Standard deviation of the data set is given to be 5

⇒ σ = 5

Now we are supposed to find out what percent of the numbers fall between 35 and 50

$\implies z =\frac{x-\mu}{\sigma}$

Now for P(35 < x < 50) :

Substitute x = 35 ⇒ z = -1

Substitute x = 50 ⇒ z = 2

So, P(-1 < z < 2) = P(z < 2) - P(z < -1)

⇒ P(-1 < z < 2) = 0.9772 - 0.1587

⇒ P(-1 < z < 2) = 0.8185

⇒ P(-1 < z < 2) = 81.8%

Therefore, 81.8% percent of the numbers fall between 35 and 50

Hence, The correct option is D. 81.8%

8 0

4 years ago

Which scenario is modeled by the equation (x)(0.6) = $86.46?

belka [17]

Answer: A picnic table is on sale for 60 percent off. The original price of the picnic table is x, $144.10.

Step-by-step explanation:

Given equation: $(x)(0.6)=\$86.46$

To find x, divide 0.6 on both sides, we get

$x=\frac{\$86.46}{0.6}\\\Rightarrow\ x=\frac{\$864.6}{6}\\\Rightarrow\ x=\$144.10$

Also $0.6=0.6\times100=60\%$

Thus, $60\%\ of\ \$144.10=\$86.46$

So the best scenario modeled by the above equation is

"A picnic table is on sale for 60 percent off. The original price of the picnic table is x, $144.10."

4 0

4 years ago

Read 2 more answers

A stadium's normal ticket price is $78. As a special promotion they offer 15% off. What is the price of the discounted ticket?

meriva

You have to find out what 15% of $78 dollars is. If you have to do this in your head and not on a calculator you can find 10%, then cut that number in 1/2 and add it to the answer. So 10% of $78 is 7.8 so $7.80. You can divide 7.80 by 2 and get 3.9 and add that to 7.8 which is 11.70. So 15% of $78 is $11.70.

5 0

3 years ago

Read 2 more answers

Pls help me!! thank you!!

klasskru [66]

Full working out shown from step 1 to last.

follow it and you get 24 square feet as final answer. Good luck in other questions!!!