All categories

3 years ago

0.2x-1=-1 what is x in the equation

Mathematics

1 answer:

Alenkinab [10]3 years ago

8 0

I believe the answer is x=0

You might be interested in

-3x = 2x + 19 solve <br>can you show me the steps and the answers thank you

Margaret [11]

Step-by-step explanation:

collect like terms

-3x-2x=19

-5x=19

x=19/5

x=3.8

3 0

3 years ago

A giraffe is 18 feet tall and has a 12 foot shadow. Mark has a 4 foot shadow. How tall is Mark?

Sindrei [870]

Answer:

6 foot

Step-by-step explanation:

so you can make a ratio out of it kinda

height : shadow height

18 : 12

1.5 : 1

so if its height : 4

the height would be 6 (4 + 2)

hope that makes sense :)

6 0

3 years ago

What is a word phrase for the expression r-31

scZoUnD [109]

The difference of r and 31.

7 0

3 years ago

Read 2 more answers

Angela makes a pillow in the shape of a wedge to use for watching tv. The pillow is 12 feet three squares of fluffy material

Hunter-Best [27]

Answer:

4 feet.

Step-by-step explanation:

Please consider the complete question.

Angela makes a pillow in the shape of a wedge to use for watching tv. The pillow is filled with 12 cubic feet of fluffy material. The base is 3 ft, the height is 2 ft. What is the length measure?

We know that a wedge is in form of triangular prism, so the volume of wedge will be equal to volume of triangular prism.

$\text{Volume of triangular prism}=\frac{1}{2}(\text{length}\times\text{ width}\times \text{Height})$

Upon substituting our given values in above formula, we will get:

$12\text{ ft}^3=\frac{1}{2}(\text{length}\times3\text{ ft}\times \text{2 ft})$

$12\text{ ft}^3=\text{length}\times3\text{ ft}^2$

$\frac{12\text{ ft}^3}{3\text{ ft}^2}=\frac{\text{length}\times3\text{ ft}^2}{3\text{ ft}^2}$

$4\text{ ft}=\text{length}$

Therefore, the length of the pillow is 4 feet.

3 0

3 years ago

Read 2 more answers

The sides of a triangle have lengths of x, x + 5, and 25. If the longest side is 25, which of the following values of x would ma

Amiraneli [1.4K]

In a right angle, the sum of the squares of the two shorter sides is equal to the square of the longest side.
Here, the longest side is 25, the shorter sides are x and x+5.

$x^2+(x+5)^2=25^2 \\
x^2+x^2+10x+25=625 \\
2x^2+10x+25=625 \ \ \ |-625 \\
2x^2+10x-600=0 \ \ \ |\div 2 \\
x^2+5x-300=0 \\
x^2+20x-15x-300=0 \\
x(x+20)-15(x+20)=0 \\
(x-15)(x+20)=0 \\
x-15=0 \ \lor \ x+20=0 \\
x=15 \ \lor \ x=-20
$

The length of a side must be a positive number, so x=15.
The answer is C.

6 0

4 years ago