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3 years ago

12

Factorise this with working: 3x –

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1 answer:

stich3 [128]3 years ago

7 0

3x - x² = x*3 - x*x
= x(3 - x)

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How does this equation: 1+-✓17/-4 equal -1+-✓17/4.

maxonik [38]

These are not equal.
Try checking it out. using ur calculator

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4 years ago

Which expression is equivalent to 96?

Delicious77 [7]

Answer:

$4\sqrt{6}$

Step-by-step explanation:

$\sqrt{96}$

$\sqrt{2*2*2*2*2*3}$

$2*2\sqrt{2*3}$

$4\sqrt{6}$

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3 years ago

Convert 15/20 to a percent

Shtirlitz [24]

Hello from MrBillDoesMath!

Answer: 75 %

Discussion:

15/20 = 3/4 = 0.75 = 75 * (1/100) = 75%

Thank you,

MrB

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4 years ago

A box with a square base and open top must have a volume of 237276 cm^3. We wish to find the dimensions of the box that minimize

svp [43]

Answer:

$A(x)=\dfrac{x^3+949104}{x}$

Step-by-step explanation:

Given a box with a square base and an open top which must have a volume of 237276 cubic centimetre. We want to find a formula for the surface area of the box in terms of only x, the length of one side of the square base.

Let the side length of the base =x

Let the height of the box =h

Since the box has a square base

Volume,

$V=x^2h=237276\\\\h=\dfrac{237276}{x^2}$

Surface Area of the box = Base Area + Area of 4 sides

$Area, A(x,h)=x^2+4xh$

Substitute h derived above into A(x,h)

$Area=x^2+4x(\frac{237276}{x^2})\\\\A(x)=x^2+\dfrac{949104}{x}\\\\A(x)=\dfrac{x^3+949104}{x}$

Therefore, a formula for the surface area of the box in terms of only x, the length of one side of the square base is:

$A(x)=\dfrac{x^3+949104}{x}$

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4 years ago

What is -310.5 as a fraction

Elza [17]

Answer:

- 310.5/100

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers