Isolating a variable in the formula - math word problems - page 25 of 144
Number of problems found: 2866
- Coefficient 80514
The resistance of a platinum wire at a temperature of 20°C is 20 Ω, and when heated to 500°C, it increases to 59 Ω. Determine the mean temperature coefficient of platinum - Temperature 80513
A copper wire coil winding has a resistance of 10 Ω at a temperature of 14°C. The passing current by the coil heats up, and its resistance increases to 12.2 Ω. To what temperature did the coil winding heat up? α = 3.92 * 10-3 1/K. - Swimming pool 7
The perimeter of a rectangular swimming pool is 20 4/5 meters. Its length is thrice its width. What is the length of the pool? What is its width? - Arlene
Arlene weighs 55.8 kg. Tina is two times heavier than Arlene. Together with Karen, the three of them weigh 210.09 kg. How many kilograms does Karen weigh? - The sum 27
The sum of a geometric progression's second and third terms is six times the fourth term. Find the two possible values of the common ratio. - Total 80458
A tower of red cubes 13/72, blue 25/48, green 516. How many cubes are there in total? - Equation of the circle
Find an equation of the circle whose diameter has endpoints (1,-4) and (3,2).
- Proportional relationship 2
If y is proportional to x, and y=150 when x=2.4, what is the value of y when x=3.5 - Tom sold
Tom sold 75% of his farm, and the number of acres sold was 150. How many acres were there on the farm before selling? - Two numbers 13
Two numbers are in the ratio 5:8. When 2 is added to each, the ratio of the resulting numbers is 2:3. Find the numbers. - To convert
To convert from a Celsius temperature to a Fahrenheit temperature, multiply the Celsius temperature by 9/5 and add 32. Which is the Fahrenheit temperature corresponding to - 30 degrees Celsius? - Possible terms
Write the following expression using the fewest possible terms. the expression quantity two-fifths times t minus 7 plus two-thirds times t end quantity minus quantity five-sixths times t plus 14 end quantity - Calculate 80358
A triangle has interior angles of 58º 20' and 83º 40'. Calculate the magnitude of the third in degrees of angle. - Ninety-one 80354
Ninety-one books are arranged on seven shelves so that there are 4 more books on each subsequent shelf than on the previous one. How many books are on the 7th shelf? - Resistance 80351
We connected two resistors in parallel in the circuit, with the first having three times the resistance of the second. The voltage between the terminals of each resistor is 6 V. Calculate the current through each branch when the resulting resistance of bo
- A pastry
A pastry chef made some tarts and cupcakes. 2/9 of the tarts were chocolate, and the rest were fruit. 3/7 out of the fruit tarts were lychee tarts, and the rest were peach tarts. There were 96 peach tarts. How many tarts did the pastry chef make altogethe - Andrew 2
Andrew and Chloe went shopping. Andrew spent $10 less than Chloe. If we let y represent how much Chloe spent, write an algebraic expression for how much Andrew spent - Three members AP
There are arithmetic sequence x + 3, 2x + 3, 5x - 3. If the common difference is 3, find x. - RT area
A right triangle has an area of 54cm². Calculate the sizes of both legs if the shorter leg is 75% of the size of the longer leg. - The area 2
The area of a rectangular piece of tablecloth is 3/4 m². Its width is 3/10 m. What is its length?
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