Answer:B
Step-by-step explanation:
Answer:
x
=
−1
,2
,
3
,
−
4
Step-by-step explanation:
Answer:
Step-by-step explanation:
√4 = 2, √36 = 6, √49 = 7
only √2 is irrational!
Answer:
Roy is 10 years old at present and Joan is 5 years old at present
Step-by-step explanation:
Let
x----> Roy's age
y----> Joan's age
we know that
x=2y ----> equation A
(x+3)+(y+3)=21 ----> equation B
substitute equation A in equation B
(2y+3)+(y+3)=21
solve for y
3y+6=21
3y=21-6
3y=15
y=5 years
Find the value of x
x=2y ----> x=2(5)=10 years
therefore
Roy is 10 years old at present
Joan is 5 years old at present
A)<span>calculate the cost of one T-shirt
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