All categories

3 years ago

How do i simplify -10x+10x

Mathematics

1 answer:

USPshnik [31]3 years ago

7 0

Answer:

Step-by-step explanation:

when they have the same variable you can add them together. When adding 10x and --10x, the cancel out (negate) and you are left with 0

You might be interested in

)Consider the following pair of equations: y = −2x + 8 y = x − 1 Explain how you will solve the pair of equations by substitutio

Ira Lisetskai [31]

Hi there,

Take y from first equation and use it / substitute it into the second equation:

-2x + 8 = x - 1, so 3x = 9, therefore x = 3.

Then y = x - 1 = 3 - 1 => y = 2.

Solution is (3,2).

A quick check: 2 = -2*3 + 8, true, and 3 = 2 - 1, also true.

Green eyes.

5 0

3 years ago

A boy can swim 75 feet in 12 seconds. What is his rate to the nearest mile per hour?

oee [108]

S=d/t so in this case it's 75/12 which is 6.25. Round it and you got 6 miles per hour.

7 0

3 years ago

Read 2 more answers

Find the surface area of the cylinder to the nearest whole number. The figure is not drawn to

Anettt [7]

Answer:

correct option is 2187

Total surface area is 2,185.44 square inches.

lateral surface area is 640.56 square inches

Step-by-step explanation:

Given

radius of cylinder = 12 inches

height of cylinder = 17 inches

we will us value of pi as 3.14

surface area for cylinder consist of two part

1. lateral surface area which is gven by $2\pi rl$

where r is radius of cylinder and l is height of cylinder

Thus, lateral surface area for given cylinder is

$2\pi rl\\ =>2* 3.14*12*17\\=> 1281.12$

Thus, lateral surface area for given cylinder is 1281.12 square inches.

_________________________________

second part of surface area is area of two base (upper and lower) of cylinder.

area of base is given by area of circle $\pi r^2$

$area \ of \base = \pi r^2 = 3.14*12^2\\=>area \ of \base = 3.14*144 = 452.16$

This, area of base is for one base of cylinder

since there are 2 base

area of both base will be = 2* area of one base

= 2*452.16 = 904.32.

Thus, area of base is 904.32 sq. in.

_______________________________________

Total surface area of cylinder = area of two base+ lateral surface area of cylinder = 1281.12 square inches + 904.32 square inches

= 2,185.44 square inches.

Thus, total surface area is 2,185.44 square inches.

lateral surface area is 640.56 square inches

but option which is closest to calculated value is 2187.

Thus, correct option is 2187

___________________________________________

Note: this problem can be directly solved using formula

total surface area for cylinder = $2\pi r^2 + 2\pi rl$

5 0

2 years ago

Is C=pi d partial variation or direct or neither

Marizza181 [45]

This is a direct variation

C = pi*d

pi is a constant and it does thru (0,0)

3 0

3 years ago

the first box is divide/ multiply the second is height/base and the third is divide/multiply the fourth is the base/ 2 / the ar

jeka94

-DIVIDE- the area of a triangle by the -BASE-
, and -MULTIPLY- the result by -2-

Explanation:
Thats because the formula for the area of a triangle is 1/2 x base x height OR (much not confusing formula) BASE x HEIGHT divided by 2

Mark me brainliest tysm! Have a nice day

6 0

2 years ago