Expression of a variable from the formula + time - practice problems
Number of problems found: 314
- NYC block
Bijan wants to go running during his family's vacation to New York City. To do so, he will run a neighborhood block 20 times. Bijan runs a total of 8 miles. The block has a length of 3/20 miles. Use the formula for the perimeter of the neighborhood block - Rhombus 36
Rhombus ABCD with side 8 cm long has diagonal BD 11.3 cm long. Find angle DAB. - Horseback riding
The total cost to go horseback riding is x dollars per hour plus a $2 fee for renting a helmet. Which expressions represent the cost, in dollars, for 4 people to go horseback riding for 3 hours each? Select all that apply. Responses: A = 4(3x+2) B = 3(4x+ - Working together
Zeru can complete a certain job in 5 days, and Tulu can complete the same job in 3 days. How long will they complete the job if they work together?
- The sum 41
The sum of 640.00 was deposited in the first bank for five years, and the interest given was 160.00. Find the rate. - Sam's
Sam's age is x. His sister Jo is 2 years more than 1.1 times his age. Question: What is Jo's age in terms of x? Write an equation to find x if the sum of Sam's and Jo's ages is 44. - Bea, Gerald and Julia
Bea is two years younger than Gerald, but Julia is 8 years older than Gerald. If Julia is 29, how old is Bea? - The balance 2
If your balance at the end of 4 years is 50000, at a 5% interest rate, What was your original investment? - Lightning strike
In a thunderstorm, the formula M=t/5.3 gives the approximate distance, M, in miles, from a lightning strike if it takes t second to hear the thunder after seeing the lightning. If you are 5.4 miles away from the lightning flash, how long will it take the
- Express 71
Express 2 minutes 30 seconds as a fraction of 3/4 hours. - General right triangle
In a right triangle, if a =x+34 and b = x and c= 50, then solve for x. Side c is a hypotenuse. Then discuss the case when a or b is a hypotenuse. - Titanic
Titanic and Star Wars have made the most money at the box office. Star Wars made about 76.7% of the money that Titanic made at the box office. If Star Wars made about $461 million, how much did Titanic make? Round to the nearest million dollars. - 56.9 divided
56.9 divided by 10 missing exponents = 0.569 - Leo bought
Leo bought 4 T-shirts and 2 pants of pants for Pho 3000. If the T-shirts cost 300 each, find the cost of each pair of pants
- Three chefs
Let's say you have 3 Chefs that have made 14 cakes in 8 hours. Assuming they are working at the same efficiency, how many hours does it take 10 Chefs to bake 24 cakes? (Rounded to the nearest hour) - Calculate 83261
Calculate the area of the triangle ABC, in which you know the side c=5 cm, the angle at the top A= 70 degrees, and the ratio of the segments cut by the height to the side c is 1:3 - Isosceles 83247
Calculate the lengths of the sides in an isosceles triangle, given the height (to the base) Vc= 8.8cm and the angle at the base alpha= 38°40`. - Together 83245
Jarka and Jana decided to decorate their common room. If Jarka painted it alone, it would take her 4 hours, and Jane 3 hours. How long would they paint the room if they painted together? - Subtended 83194
A circle k with a center at point S and a radius of 6 cm is given. Calculate the size of the central angle subtended by a chord 10 cm long.
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