X=3 because you subtract the three on both sides to get x alone. So you get: 7x=21 then you divide seven by 21 and get x=3
Answer:
You = bronze
Your brother = silver
Your sister = gold
Step-by-step explanation:
Your marks: 40/60
Your brother's marks: 46/60
Your sister's marks: 49/60
You can simplify the fractions, but you don't have to:
40/60 = 2/3
46/60 = 23/30
49/60 = 49/60
Now, divide each of the numerators by the denominators (turn the fraction into a decimal).
2/3 = 0.6667
23/30 = 0.7666667
49/60 = 0.8166667
(Note that these are all approximations as the real answers go on forever)
Lastly, multiply them all by 100 to get the percent.
0.6667 x 100 = 66.67% - bronze
0.76667 x 100 = 76.667% - silver
0.816667 x 100 = 81.6667% - gold
Answer:nsnsjsjsksnsnsnns
Step-by-step explanation:
F(x) = (3x+7)^2
f(1) = (3*1+7)^2 ... replace every x with 1
f(1) = (3+7)^2
f(1) = 10^2
f(1) = 100
Final Answer: 100
