120
because 12X10 is 120 and he has 12 groups of 10
The fraction 13/25 is equivalent to 52 percent.
To workout this, divide the numerator by the denominator, sum this value to the integer part and multiply the result by 100%, so:
13/25 in percent = 13 ÷ 25 × 100% = 0.52 × 100% = 52%
The only number you can add to √7 to get a rational number is a-√7 where a is any rational number.
So if a=0 the answer is -√7, option answer 1.
Answer:
Answer B.
Step-by-step explanation:
x+2y=10
2x+8y=16
x=-2y+10
2x+8y=16
2(-2y+10)+8y=16
-4y+20+8y=16
4y=-4
y=-1
x=-2y+10
x=-2(-1)+10
x=2+10
x=12
one solution
