Expression of a variable from the formula + fractions - practice problems
Number of problems found: 75
- Evaluate statement
Which is a correct statement about the description “two less than the quotient of a number cubed and sixteen, increased by eight” when n = 4? Choices: The value when n = 4 is 6. The value when n = 4 is 7. The value when n = 4 is 9. The value when n = 4 is
- The ratio 7
The ratio of the sides of two squares 4:5 if the sum of their areas is 180 cm² Find the sides of the two squares.
- Star equation
If 5/21 + 14/21 + ☆ = 1, then what is the value of ☆?
- The ratio 6
The ratio of cats to dogs is 2 to 5. if there are 35 total animals in the shelter then how many are dogs?
- Sides in ratio
The sides of the triangle are in a ratio of 2: 8: 5. Find the dimensions of the remaining sides if the longest side is 32 cm.
- The expression
What is the value of the expression ((62+60))/(23)
- When 5
When 5 is subtracted from both my numerator and denominator I become 3/4. What fraction i am?
- Evaluate expr with 2 vars
If a=6 and x=2, find the value of (2ax + 7x- 10) /(4ax-3a-2)
- A perimeter
A perimeter of a parallelogram is 2.8 meters. The length of one of its sides is equal to one-seventh of the entire perimeter. Find lengths of the sides of the parallelogram.
- The ratio 4
The ratio of two number is 5:4 if 40% of the first number is 12, what will be 50% of the second number?
- Two fifth
Two-fifths of the worker in a factory are men. The rest are women, if there are 28 men. How many more women than men are there?
- Distributive property
Verify the distributive property a×(b+c)=(a×b)+(a*c) for the rational number a=5/8, b=7/4 and c=2/3
- Boys and girls 8
In a class of 35 boys and girls that has a ratio of 2:5, 5 boys are absent and 5 boys are present. How many students are present?
- Two numbers and its product
The product of two numbers are 2/3. If on of them is 1/10, what is the other?
- A cook
A cook wants to make enough cookies for 159 students. The cookie recipe makes 1 1/4 dozen cookies. A dozen equals 12. How many batches does the cook need to make if each student gets one cookie?
- The floor
The floor collapsed because three and a half times the amount it had been designed to hold had been stored in the room. If 980 tons had been stored in the room, what amount was the floor designed to hold?
- Fraction unknowns
Divide of fractions with unknowns: Fraction 1: The quantity x squared plus 6 times x plus 9 over the quantity x minus 1. Fraction 2: the quantity x squared minus 9 over the quantity x squared minus 2 times x plus 1. Find Fraction 1 over Fraction 2.
- Cheese consumption
I have some cheese. I used 2/5 of the total amount of cheese yesterday. Today, I used 2/5 of the remaining cheese from yesterday. If 900 g of cheese remain at the end of today, how many grams of cheese did I have originally?
- A fraction
I think of a fraction, if we increase its numerator and denominator by one, the value of the fraction increases by one tenth, what fraction do I think?
- The solar
The solar heating tank has the shape of a rotating cylinder. When the tank is in a horizontal position, the water in the tank wets 4/5 each tank bases. If we place the tank in a vertical position, the water in the tank will reach up to 1.2 m. Calculate th
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