The answer is 10!!!
Above is wrongTo work it backwards.(A - 13) X 8 = 80
80 Divided by 8 = 10
10 + 13 = 23
A = 23
To check put the answer into the original equation
80
Subtract two, multiply by two, subtract one. :)
x - 8 = -13 To solve the equation, you can add, subtract, multiply and/or divide as long as you do the same thing to both sides of the equation. In this case, you can add 8 to both sides making it x - 8 + 8 = -13 + 8 x = -5
Multiply the number by .8 to get 80% of that number.
Multiply 195 by .8 (decimal form for 80%): 195 x .8 = 156
80
Subtract two, multiply by two, subtract one. :)
21
8
x - 8 = -13 To solve the equation, you can add, subtract, multiply and/or divide as long as you do the same thing to both sides of the equation. In this case, you can add 8 to both sides making it x - 8 + 8 = -13 + 8 x = -5
you would need a 94. Multiply your current average of 78 times 7 to get to 546. To have an average of 80, you multiply 80 *8 to get 640. 8 represents the total number of exams you have taken. I am assuming the question is "what does the student need to score on his eighth exam to get an 80 for the semester?" subtract 546 from 640 and you get 94.
Multiply the number by .8 to get 80% of that number.
y/2 + 8 = 13 Subtract 8 from both sides: y/2 = 5 Multiply both sides by 5: y = 10
Multiply 195 by .8 (decimal form for 80%): 195 x .8 = 156
112
1/8 + 3/13To find a common denominator, multiply 8 and 13, which is 104.Multiply the 1/8 by 13/13, which is 13/104.Multiply 3/13 by 8/8, which is 24/104.Now that they have a common denominator, you can add them:13/104 + 24/104 = 37/104.
8