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3 years ago

Find the area of a square with side length of 4x.

Mathematics

1 answer:

vampirchik [111]3 years ago

6 0

Answer:

16x²

Step-by-step explanation:

since all sides of a square are equal, we just multiply 4x by 4x. this gives us 16x².

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How much does the cost increase for each ton of sugar being transported?

vfiekz [6]

Answer:

it increases by 125 for each ton of sugar being transported

Step-by-step explanation:

750-875= 125

4 0

3 years ago

If a bill totals 123.85 with 5% tax and 18% tip what is the total bill

lianna [129]

Answer:

$152.33

Step-by-step explanation:

123.85 x 0.05 = $6.19

123.85 x 0.18 = $22.29

123.85 + 6.19 + 22.29 = $152.33

6 0

3 years ago

An astronaut on the moon drops a tool from the door of the landing ship. The quadratic function f(x)=-2x^2+10 models the height

Gekata [30.6K]

Answer:

2.2 seconds.

Step-by-step explanation:

We have been given that an astronaut on the moon drops a tool from the door of the landing ship. The quadratic function $f(x)=-2x^2+10$ models the height of the tool, in meters, after x seconds.

To find the time, it will take for the tool to hit the surface of moon, we will set $f(x)=0$ and solve for x as:

$-2x^2+10=0$

$-2x^2+10-10=0-10$

$-2x^2=-10$

Divide both sides by negative 2:

$\frac{-2x^2}{-2}=\frac{-10}{-2}$

$x^2=5$

Now, we will take square root of both sides:

$\sqrt{x^2}=\pm\sqrt{5}$

$x=\pm 2.236067$

$x\approx 2.2$

Since time cannot be negative therefore, it will take 2.2 seconds for the tool to hit the surface of the moon.

8 0

4 years ago

6x + 4x- 1 = 2(5x + 4)

poizon [28]

Answer:

not equal

Step-by-step explanation:

first multiply 2 by 5x and by positive 4

2(5x+4)---->10x+8

10x +8 does not equal 6x +4x-1

4 0

3 years ago

What is the slope of a line perpendicular to the line whose equation is

Troyanec [42]

Answer: -5

Step-by-step explanation:

7 0

3 years ago