#9
35/42 divide by 7 and X = 5
Answer:
y = 2
Step-by-step explanation:
(x)(y) = k Inverse relationship
(4)(3) = k
12 = k
(6)(y) = 12
y = 2
Writing some equations out might help!
1) You know that a is 4/5 of b. This can be written as:

.
To find what b is equal to, multiply both sides by 5/4:

.
A is 5/4 B.
2) You know that a is 1/5 smaller than b. This can be written as:

.
To find b, just add 1/5 to both sides:

.
B is 1/5 bigger than a.
2/5 x 6/7
Multiply the numerator and denominator
2 times 6
5 times 7=
12/35
You can't simplify it
Not sure what you’re trying to find but here’s the simplified version:
-4<=2t+5<11
-9<=2t<6
-9/2<=t<3