The variable x and y are inversely proportional to each other.When x =7,y=3,what is the value of t when y=21?solution
2 answers:
Answer:
The value of x is 1.
Step-by-step explanation:
Since x and y are inversely proportional to each other, the mathematical relationship between x and y can be expressed as x = k/y where k is the proportionality constant
x = k/y
k = xy
When x = 7, y = 3
k = 7×3 = 21
When y = 21
x = k/y = 21/21 = 1
Answer:
I'm guessing you meant X instead of T because there is no information about T.
21/3=7 so the ratio is 7 times more
7 x 7 = 49 so 49 is the answer
Hope this helps.
Step-by-step explanation:
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B
Step-by-step explanation:
a. 4/7t =56
4t= 392
t=98
b. 4=1/2 b -12
4+12=1/2 b
16=1/2 b
so, b =32
1.) 2.)
Use a calculator it will help.
Answer:
B $274.07
Step-by-step explanation:
You just devide 222 by 0.81
