All categories

4 years ago

30-x=(-12) What is the variable?

Mathematics

2 answers:

inn [45]4 years ago

4 0

It would be 42 becuase 30-42 would = -12

diamong [38]4 years ago

3 0

The variable is x x equals 42

You might be interested in

Perrys Bikes rents bikes for $17 plus $6 per hour. john paid $59 to rent a bike. For how many hours did he rent the bike?

matrenka [14]

7 hours

Let x represent hours rented
59=17+6x
42=6x
x=7

4 0

3 years ago

the area of a window is 40 square feet. the length is the square root of 20 feet. what is the width of the window

Irina18 [472]

----------------------------------------------------
Given information
----------------------------------------------------
Area = 40ft²
Length = √20 ft

----------------------------------------------------
Formula
----------------------------------------------------
Area = Length x Width

----------------------------------------------------
Find Width
----------------------------------------------------
40 = √20 x width
Width = 40 ÷ √20
Width = 40 ÷ 2√5
Width = 20 ÷ √5
$Width = \frac{20}{ \sqrt{5} }$

$Answer: \boxed {Width = \frac{20}{ \sqrt{5} }}$

3 0

4 years ago

The lengths of the sides of a triangle are 3, 4, 5. Can the triangle be a right triangle?

Contact [7]

Answer:

Yes it can

Step-by-step explanation:

To check wether it's a right angle triangle we need to apply the Pythagoras theorem

h^2= a^2 +b^2

Hypotenuse is always the longest side so

5^2 = 3^2 + 4^2

This is correct, so the triangle is a right angle triangle

Answer from Gauthmath

3 0

3 years ago

Help lol question 1 and 2 15 points

DiKsa [7]

Answers:

Choice B) y = (1/4)x
The unit rate is  3.89  dollars per pound. It costs  23.34  dollars for a turkey that weighs 6 pounds.

=====================================================

Explanations:

Direct proportional equations are always in the form y = kx, where k is some constant. In the case of choice B, we have k = 1/4. Visually, direct proportion equations are always straight lines and go through the origin.
Divide $34.99 over 9 to get 34.99/9 = 3.88777 approximately. This rounds to 3.89, so it costs $3.89 per pound. That's the unit rate. Multiply this by 6 to get 6*3.89 = 23.34 which is the cost of the 6 pound turkey.

6 0

3 years ago

Read 2 more answers

X^4 a^5 / x^3 a^3 answers x^2 a^2 xa^2 x^-1 a^-2 a^2/x

bagirrra123 [75]

Well the answer i got was $a^{8}x$ when i multiplied
the answer i got when i added was $x^{4} + \frac{ a^{5} }{ x^{3} } + a^{3}$

3 0

3 years ago