# Expression of a variable from the formula - 7th grade (12y) - math problems

#### Number of problems found: 247

- Given

Given 2x =0.125 find the value of x - Value of expression

X=2, y=-5 and z=3 what is the value of x-2y? - Expressions

Expression (3a-7).(3a+7) is identical with: ? - Unknown number 17

Milada said, I am thinking of a number such that I evaluate expression x^{1}/3, the value of the expression would be 5. Which number Milada thinking? - Hotel

The hotel has a p floors each floor has i rooms from which the third are single and the others are double. Represents the number of beds in hotel. - Simplify 2

Simplify expression: 5ab-7+3ba-9 - Which

Which decimals when subtracted equal 3.89: a - b = 3.89 - Rectangle from string

String 12m. Make rectangle when one side is two times longer than its width. - Thousand balls

We have to create a thousand balls from a sphere with a diameter of 1 m. What will be their radius? - Simple equation 3

24 = n • 27, solve for n - Even / odd numbers

a / Using variable n write two consecutive odd numbers. b / the sum of three consecutive odd numbers is 333. What are this numbers? - Perimeter to area

Calculate the area of a circle with the perimeter 15 meters. - Price increase

A 20 percent price increase meant a 90-crown raise. How many cost a product after? - Circle r,D

Calculate the diameter and radius of the circle if it has length 26.59 cm. - Area to perimeter

Calculate circle circumference if its area is 254.34cm2 - Circle - simple

The circumference of a circle is 198 mm. How long in mm is its diameter? - Diagonal of square

Calculate the side of a square when its diagonal is 10 cm. - Radius

Find the radius of the circle with area S = 200 cm². - Unknown number

Determine the unknown number, which double of its fourth square is equal the fifth its square. - Cube basics

How long is the edge length of a cube with volume 15 m^{3}?

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Expression of a variable from the formula - math word problems. Examples for 7th grade (seventh).