The answer is 9 because 5*(-3)+8+9-(-7)=9
Answer:
-37, -36, -35
Step-by-step explanation:
x+x+1+x+2=x-71
3x+3=x-71
2x=-74
x=-37
So x=-37, x+1=-36, x+2=-35
Add these three numbers and you get -108 which is 71 less than -37
QUESTION 1
Let the numbers be x and y.
It was given that the numbers are in the ratio 5:2.
This implies that,
The sum of the numbers is
The difference is
The ratio if the sum to the difference is
QUESTION 2
Let the numbers be m and n.
This implies that,
Also,
We rewrite this as a fraction to get,
We make m the subject to get,
We put equation (2) into equation (1) to get,
The numbers are 42 and 49.
Answer is (-10,5)
since it lies on the line given it will obviously be in a proportional relationship with the given point (the answer you ticked isn't on the line, check the X and Y axis of the coordinates!)
Use your fingers.
Hold down the first finger on your left hand, nine fingers remain up. The answer is 9
For two hold down the second finger on your left hand. On the left is one finger standing, and on the right are 8 fingers standing. The answer is 18
This pattern works for everything up to ten. Then you remember 9 x 11 is 99. And 9 x 12 is 108