h = -5 8h - 10h = 3h + 25 -2h = 3h + 25 -2h - 3h = 3h - 3h + 25 -5h = 25 h = -5 CHECK: 8(-5) - 10(-5) = 3(-5) + 25 -40 - -50 = -15 + 25 -40 + 50 = 10 10 = 10 CORRECT
15/24 = 15÷3/24÷3 = 5/8 or 5 : 8
The gcf of the numbers is 15 so the ratio is 7 to 10
15:24 is not equal to the ratio 15 to 25.
This is all about factorising. Firstly yo have to find the biggest number that will go into both 15 and 75. 15 goes into both 15 and 75. Divide both numbers by 15, (15/15=1) (75/15=5) Therefore the ratio in its lowest terms is 1:5 If you can not recognise that 15 is the highest common factor straight off then look for smaller ones each time. e.g. divide by 5. Ratio = 3:15 divide new ration by 3. Ratio = 1:5
h = -5 8h - 10h = 3h + 25 -2h = 3h + 25 -2h - 3h = 3h - 3h + 25 -5h = 25 h = -5 CHECK: 8(-5) - 10(-5) = 3(-5) + 25 -40 - -50 = -15 + 25 -40 + 50 = 10 10 = 10 CORRECT
simplify both sides of the equation: 1/3h+(-4)(2/3h)+(-4)(-3)=2/3h+-6 ~ distribute that 1/3h+-8/3h+12=2/3h+-6 (1/3h+-8/3h)+(12)=2/3h-6 ~ combine like terms for this -7/3h+12=2/3h-6 -7/3h+12=2/3h-6 subtract 2/3h from both sides: -7/3h+12-_2/3h=_2/3h-6-2/3h -3h+12=6 subtract 12 from both sides: -3h+12-12=-6-12 -3h=-18 divide both sides by -3 -3h/-3=-18/-3 h=6
- 1.3
Divide both numbers by 5 changes the ratio to: 7 and 3
10 : 180 minutes then the ratio would be 1 to 18, not 18 to 1. It is false.
15/24 = 15÷3/24÷3 = 5/8 or 5 : 8
The gcf of the numbers is 15 so the ratio is 7 to 10
3h+13 = 7 3h = 7-13 3h = -6 h = -2
It is: 27 to 44 by dividing them by their hcf which is 15
15:24 is not equal to the ratio 15 to 25.
5
15 divided into the ratio 14 = 1.0714285714285714