Genevieve is 3 years older than twice her brother’s age. Genevieve is 21 years old. Write an equation to find her brother’s age.
2 answers:
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Answer:
Step-by-step explanation:
1) Convert to improper fraction. Use this rule:
.
2) Simplify 4 * 3 to 12.
3) Simplify 12 + 1 to 13.
4) Convert to improper fraction. Use this rule:
.
5) Simplify 1 * 3 to 3.
6) Simplify 3 + 2 to 5.
7) Join the denominators.
8) Simplify.
9) Convert to mixed fraction.
(Decimal Form: 2.666667)
Thank you,
Eddie
Answer:
36 : 6 and -6
12 =
1.96 =1.4 and -1.4
0.64 : 0.8 and -0.8
400 : 20 and -20
25/36 = 5/6 and -5/6
Step-by-step explanation:
we know that
(-x)^2 = x^2
ALSO
(x)^2 = x^2
thus, square of both negative and positive number is same positive number.
_________________________________________________
36 = 6*6
36 = -6*-6
hence
square roots of 36 is both -6 and 6
12 = 4*3 =
also
12 =
___________________________________
1.96 = 196/100 = (14/10)^2
1.96 = 196/100 = (-14/10)^2
hence
_______________________________
0.64 = 64/100 = (8/10)^2 = 0.8^2
0.64 = 64/100 = (-8/10)^2 = (-0.8)^2
Thus, square root of 0.64 = 0.8 and -0.8
_________________________________
400 = 20^2
400 = (-20)^2
__________________________________
25/36 = (5/6)^2
25/36 = (-5/6)^2