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3 years ago

280 ÷ 5.60 show the workings and the on the answer

Mathematics

1 answer:

Akimi4 [234]3 years ago

5 0

The correct answer is 50

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Need help ASAP math

givi [52]

Answer:

Step-by-step explanation:

We know it's direct variation using the direct variation equation.

$y=kx$

Where k is the constant.

Since 7 times x is the y values, $k=7$

Now we can substitute 7 into k of the direct variation equation.

$y=7x$

5 0

2 years ago

An aquarium has dimensions 2x feet, (x – 1) feet, and (x + 2) feet. The aquarium volume must be no more than 280 cubic feet.

Lina20 [59]

Answer:

$x^3+x^2-2x\leq140$

Step-by-step explanation:

This is an algebra problem, and we are expected to inequality for the volume of the aquarium.

Given that the

length= 2x

width=(x – 1)

heigth= (x + 2)

and the volume= 280 ft^3

the inequality expression for the volume is

$2x*(x -1) * (x + 2) \leq 280\\\\$

open the brackets

$2x*(x -1) * (x + 2) \leq 280\\\\(2x^2-2x)*(x+2)\leq 280\\\\\2x^3+4x^2-2x^2-4x\leq 280\\\\\2x^3+2x^2-4x\leq280$

divide through by 2 we have

$x^3+x^2-2x\leq140$

5 0

2 years ago

Read 2 more answers

Multiply.<br> 8u2y6.2u?y?<br> Simplify your answer as much as possible.

musickatia [10]

The answer is 99.2u squared y squared

3 0

2 years ago

How to find x(x-2)<0

Anna [14]

Answer:

x<2

Step-by-step explanation:

x- 2 <0

x < 2

7 0

2 years ago

Read 2 more answers

If the radius of a circle is increased by 100%, then the area is increased by:

shtirl [24]

$A_1=\pi r^2\\\\R=2r\ then\ A_2=\pi R^2\to A_2=\pi(2r)^2=4\pi r^2\\\\A_2-A_1=4\pi r^2-\pi r^2=3\pi r^2=3A_1\\\\3=300\%\\\\Answer:(C).$

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2 years ago

280 ÷ 5.60 show the workings and the on the answer​

280 ÷ 5.60 show the workings and the on the answer