Mathematics High School

You can model an arch at your school using the equation $y=-0.5\left(x+4\right)\left(x-4\right)$ , where $x$ and $y$ are measured in feet. The x-axis represents the ground. Find the width of the arch at ground level.

Answers

Answer 1

Answer:

8feet

Step-by-step explanation:

Given the equation that models the arch of a school expressed as;

[tex]$y=-0.5\left(x+4\right)\left(x-4\right)$[/tex]

If the x axis represents the ground;

At the ground level, x = 0

Substitute x = 0 into the equation to get y;

y = -0.5(0+4)(0-4)

y = -0.5(4)(-4)

y = -0.5 * -16

y = 8ft

Hence the y axis at the ground level is 8feet

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B. 120

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Answer:

120

Step-by-step explanation:

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I think it is 0x+-4

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Answer:

I think it's 145.225 sq in.

Step-by-step explanation:

2.5 x 2 x 3.14 = 15.7

15.7 x 9.25 = 145.225

Answer:

its the second one

Step-by-step explanation:

2.5 x 2 x 3.14 = 15.7 because 3.14 is pi

and then do

15.7 x 9.25 = 145.225 so there you go


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just chose the last one 75% are stars

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Answer:

I think 4?????

Step-by-step explanation:

I don't know

Answer:

...

2 + 2 = 4

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If a large factory sells its new gadgets for $5 each, it can sell 1050 per month, and if
it sells the same gadgets for $9, it will sell 900 per month. To the nearest whole
number, how many gadgets could be sold per month, if the price was $12?

Answers

(5, 1050), (9, 900), (12, y)
For linear relation,
(y-1050)/(12-5) = (900-1050)/(9-5)
Solve for y,
y = 787.5

Round to the nearest whole number which will be 788

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Which tank has the greater volume?
Tank A has a diameter of 10 ft and a height of 3 ft. Tank B has a diameter of 6 ft and a height of 8 ft

A.Tank B has a greater volume.

B.Tank A and Tank B have the same volume.

C.Tank A has a greater volume

Answers

Tank A has a greater volume.

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Answers

so first we should make the denominators the same so find a multiple that 5 and 8 share: they share a multiple of 40, so whatever you do to the denominator you do to the numerator. So the equation should now look like 16/40+15/40 and the answer is 31/40!!

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Answers

Step-by-step explanation:

4x²-64

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Therefore, the factors are -4 and 4.

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Twice one number added to another umber is 18. If the second number is equal o 12 less than 4 times the first number, find the two numbers.
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Step-by-step explanation:

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Jack, Alex and Amir jumped a total of 12.69 m in a long

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Alex jumped exactly 200 cm further than Jack.

Amir jumped exactly 2,000 mm further than Alex.

What distance did they all jump?

Give your answers in metres.​

Answers

Answer:

Step-by-step explanation:

The distances they jumped were

x,y,z

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z=x+2+2=x+4

x+y+z=12.69

x+x+2+x+4=12.69

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Hello There!

The problem states that the angles are complementary angles

Complementary angles are angles that have measures that add up to equal 90

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Answer:

42

Step-by-step explanation:

The product of 6 multiplied by 7 is 42.

We have to find the value of 6×7.

To find the product of 6 multiplied by 7, you simply multiply the two numbers together.

6 multiplied by 7 can be calculated as:

6 x 7

When six is multiplied with seven we get forty two.

= 42

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Answer:

<4 and <8 are corresponding angle

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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Simplify this expressions 5x -7 + 3x + 10

Answers

Answer:

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Step-by-step explanation:

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Answers

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Step-by-step explanation:

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Answer:

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Answers

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msdnvqkyfhcjavnyoqrudfn fn,bq2yor78DHCBN

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Answers

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Step-by-step explanation:

Answer:

because the first side equal for the second side this means that this triangle is isosceles

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Step-by-step explanation:

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Step-by-step explanation:

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