The sum of the ages of Kristen and Ben is 32. Four years ago Kristen was twice as old as Ben. How old are they both now?
4 years back Karen was 16 and Bob was 8.
Hence, now Karen is 20 (16+4) and Bob is 12 (8+4).
Найдите значения х, при которых выражение имеет смысл
3/5
Mr. Hines paid $8.40 for an international phone call. He paid a fee of $1.25 plus $0.55 per minute. This is an equation can be used to find x, the length of the call in minutes?
What is 0.55x + 1.25 = 8.40
При каких целых значениях m дробь ((m-1)(m+1)-10))/m
принимает целые значения?
+-1
+-11
Площадь прямоугольного треугольника равна 168 см2. Найдите его катеты, если отношение их длин равно 7/12.
14,24
Fred pays the same amount of property tax each month. His total property tax for the year is $1,545. This is his monthly tax payment in dollars and cents?
What is $128.75
Докажите что при любых значениях переменной значение выражения
(x3+3x)/((x+2))-((3x2-14x+16)/(x2-4))+2x
x2+4>0
На рисунке АВ = ВС, ∠1 = . Найдите ∠2.
30
Lucy reads 450 words in 3 minutes. This is an equation that can be used to find w, the number of words Lucy can read in 20 minutes if she continues to read at the same rate?
What is w = (450/3)*20
Докажите, что при всех значениях y ≠ ±3 значение выражения 2y/(y+3) + (y–3)2 • (2/(9–6y+y2) + 1/(9–y2)) не зависит от у.
3
The Texas Star, at Fair Park in Dallas, is the largest Ferris wheel in the western hemisphere. It has a diameter of 65 meters. This is the approximate distance traveled by a person who rides this wheel for one complete revolution.
What is 204 m?
Катер прошел км по течению реки и
км по озеру, затратив на весь путь
час. Скорость течения равна
км/ч. Найти скорость катера по течению.
ответ: км/ч.
20