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3 years ago

15

Write the equation of the line that passes through the points (3,5) and (-5,0). Put

1 answer:

son4ous [18]3 years ago

4 0

Okiiiiiiiiiiiiiiiiiiiiiii Y+5=2 (x-3)

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The width of a box in the shape of a rectangular prism is 4 inches more than the height h . The length is the difference of 9 in

Doss [256]

Answer:

$(a)$ $V = -H^3+ 5H^2 + 36H$

$(b)$ $Length = 5in; Width = 9in; Height = 5in$ or $Length = 3in; Width = 10in; Height = 6in$

Step-by-step explanation:

Let:

$W=Width; L = Length; H = Height$

Given

$W = 4 + H$

$L = 9 - H$

Solving (a): The polynomial for the volume in terms of height

Volume (V) is calculated using:

$V = L * W * H$

$V = (9 - H) * (4 + H) * H$

Expand

$V = (9 - H) * (4H + H^2)$

Open brackets

$V = 36H + 9H^2 - 4H^2 - H^3$

$V = 36H + 5H^2 - H^3$

Rewrite as:

$V = -H^3+ 5H^2 + 36H$

Solving (b): The dimensions when Volume = 180

Substitute 180 for V in: $V = -H^3+ 5H^2 + 36H$

$180 = -H^3+ 5H^2 + 36H$

Rewrite as:

$H^3 - 5H^2 - 36H + 180 = 0$

Factorize:

$H^2(H - 5) - 36(H - 5) = 0$

$(H^2 - 36)(H - 5) = 0$

Express $H^2 - 36$ as difference of two squares

$(H - 6)(H + 6)(H - 5) =0$

This gives:

$H - 6 =0==> H = 6$

$H + 6 =0==> H = -6$

$H - 5 =0==> H = 5$

Since the height can not be negative, then H = 5 or H = 6

Recall that:

$W = 4 + H$

$L = 9 - H$

When H = 5

$W = 4 + 5 = 9$

$L = 9 - 5 = 4$

When H = 6

$W = 4 + 6 = 10$

$L = 9 - 6 = 3$

Hence, the dimensions of the box are:

$Length = 5in; Width = 9in; Height = 5in$

or

$Length = 3in; Width = 10in; Height = 6in$

3 0

3 years ago

Which function has zeros -4 and 2

zvonat [6]

A function with zeroes at z1 and z2 can be factored into form
f(x)=a(x-z1)(x-z2)
where a is a constant

so
it is
f(x)=a(x-(-4))(x-2) or
f(x)=a(x+4)(x-2)

7 0

4 years ago

Can someone help me :)

klasskru [66]

Answer:

-61 degrees F

Step-by-step explanation:

3 0

3 years ago

The following data shows the number of contacts that a sample of high school students had in their cell phones. does the data gi

Klio2033 [76]

Yes it does cause of course girls are gonna have alot of numbers so tjey can get in contact with ppl

5 0

3 years ago

Each time you take your dog to the dog park it costs $1.75. Write an expression that represents the cost of n visits to the dog

Step2247 [10]

Answer:

1.75n

For each visit it costs 1.75, so n visits would be the product of the two.

Step-by-step explanation:

6 0

3 years ago

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