Answer:
x = -11
Step-by-step explanation:
6x+185 = 8x+207
substract 8 from both side and you will get
-2x = 22
and then divide by -2 and x will be equal to
x = -11
Answer:
$0.60
Step-by-step explanation:
given :
15 cookies ---------> Costs $9
1 cookie -------> Costs $9 ÷ 15 = $0.60
Answer:
2x = 26, x = 13
Step-by-step explanation:
Write and solve an equation twice a number is 26
x = unknown number
Equation: 2x = 26
Solve:
2x = 26
/2 /2 <== divide both sides by 2
x = 13
Check your answer:
2x = 26
2(13) = 26
26 = 26
This stament is correct
Hope this helps!
Answer:
There are 33 multiple choice questions and 9 short answer questions on the test
Step-by-step explanation:
In this question, we are asked to calculate the number of multiple text answers and short answers given in a test, given that the test taker will attempt a number of questions and have a particular score.
Since we do not know the number of these questions individually, let’s represent them with variables. Let the number of multiple choice questions to be answered be x and the number of short answers questions to be given be y.
Mathematically,
x + y = 42. (I)
Also, the total points is 60, with multiple choice of 1 point each and short answers of 3 points each. Mathematically, this means;
x(1) + y(3) = 60.
x + 3y = 60. (ii)
Now let’s solve both 1 and 2 simultaneously.
From 1, let’s say y = 42-x and substitute this in 2
x +3(42-x) = 60
x + 126 -3x = 60
-2x = 60-126
2x = 66
x = 66/2
x = 33
From y = 42-x, we can substitute the value of x and get y.
y = 42-33
y = 9
