一个美术生
Seven more than the product of a number and four is negative seventeen. find the number.
unknown values: n
equation: 7 + 4*n = -17
answer: -6
how many 3 digit even numbers can be made using the digits 1,2,3,4,6,7,if no digit is repeated?
unknown values: n
equation: n=3*5*4
answer: 60
How many 3 digit numbers can you make using the digits 1,2,3, and 4 if the hundreds digit is prime and repetition of a digit is not permitted?
unknown values: n
equation: n = 2 * 3 * 2
answer: 12
What is the sum of the arithmetic sequence 152, 138, 124, ��, if there are 24 terms?
unknown values: s
equation: d = 138 - 152
equation: b = 152 + (24-1)d
equation: s = (152 + b)*24/2
answer: -216
Rhonda added 140 to one third of a number for a result of 216.What is the number?
unknown values: x
equation: 1/3 * x + 140 = 216
answer: 228
what percent of 50 is 6?
unknown values: x
equation: x * 0.01 * 50 = 6
answer: 12
What percent of 80 is 50?
unknown values: x
equation: 0.01*x * 80 = 50
answer: 62.5
The sum of 3 consecutive EVEN integers is 174. What is the first integer?
unknown values: x
equation: x + 2 = y
equation: y + 2 = z
equation: x + y + z = 174
The sum of three consecutive numbers is 72. What are the smallest of these numbers?
unknown values: x
equation: x + 1 = y
equation: y + 1 = z
equation: x + y + z = 72
answer: 23
3 times the first of three consecutive numbers is 4 more than 2 times the second. Find the numbers.
unknown values: x, y, z
equation: x + 1 = y
equation: y + 1 = z
equation: 3*x = 2*y + 4
answer: 6; 7; 8