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3 years ago

Samantha and Luis are attempting to determine the average number of library books that seventh-grade students check out at

Mathematics

1 answer:

san4es73 [151]3 years ago

6 0

Answer:

Luis because the sample is taken from the population of all seventh graders.

Step-by-step explanation:

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How do I calculate this? Is there a formula?

alex41 [277]

<u>Answer:</u>

Height of cables = 23.75 meters

<u>Step-by-step explanation:</u>

We are given that the road is suspended from twin towers whose cables are parabolic in shape.

For this situation, imagine a graph where the x-axis represent the road surface and the point (0,0) represents the point that is on the road surface midway between the two towers.

Then draw a parabola having vertex at (0,0) and curving upwards on either side of the vertex at a distance of $x = 600$ or $x = -600$ , and y at 95.

We know that the equation of a parabola is in the form $y=ax^2$ and here it passes through the point $(600, 95)$ .

$y=ax^2$

$95=a \times 600^2$

$a=\frac{95}{360000}$

$a=\frac{19}{72000}$

So new equation for parabola would be $y=\frac{19x^2}{72000}$ .

Now we have to find the height $(y)$ of the cable when $x= 300$ .

$y=\frac{19 (300)^2}{72000}$

y = 23.75 meters

8 0

3 years ago

Read 2 more answers

A right triangle is labeled with the hypotenuse 12m and an acute angle 23 degree

IgorLugansk [536]

Answer:

sin23= x/12

sin23(12)=x

0.391(12)=x

x=4.7 or 5

3 0

2 years ago

Solve the equation.

Mekhanik [1.2K]

Answer:

3(x_1)=2(3_x)

or,3×_3 =6_2×

or,3×+2× =6+3

or,5× =9

or,× =9/5

4 0

2 years ago

Read 2 more answers

Find the value of X. What is x and how do you solve for y first.

11111nata11111 [884]

Answer:

id.k but i hope this wuote helps u have a great day :) :)

Step-by-step explanation:

Everything will be okay in the end. If it’s not okay, it’s not the end

Have a nice day :) :) :)

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2 years ago

Maria bought seven boxes. A week later half of all her boxes were destroyed in a fire. There are now only 22 boxes left. With ho

nirvana33 [79]

Maria started with 29 boxes

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3 years ago