Answer:
none of the choices is correct
Step-by-step explanation:
To find the length of the side of square 1, divide the perimeter, 104÷4 = 27
That is the hypotenuse of the triangle.
The square of 27 is 729
Subtract the given square of Square 2, 576
729 - 576 = 153
Take the square root of 153 to find the length of the side of Square 3
√153= 12.37
I hope this helps. It's just a bit more challenging version of Pythagorean Theorem: a² + b² = c²
I have a feeling I've seen this question before
anyway
A=number of hours that plan A is
B=number of hours that plan B is
so
on wednesday, 7hr
5A and 6B so
5A+6B=7
on thursday, 3 hours
3 of A and 2 of B
3A+2B=3
so we gots
5A+6B=7
3A+2B=3
elimination
eliminate B's
multiply 2nd equation by -3 and add to 1st equation
5A+6B=7
<u>-9A-6B=-9 +</u>
-4A+0B=-2
-4A=-2
divide both sides by -4
A=1/2
A=0.5
sub back
3A+2B=3
3(0.5)+2B=3
1.5+2B=3
minus 1.5 both sides
2B=1.5
divide by 2 both sides
B=0.75
plan A lasts 1/2 hour or 0.5 hour or 30 mins
plan B lasts 3/4 hour or 0.75 hour or 45 mins
The answer should be C: 12
4x-12=32-7x
4x+7x=32+12
11x=44
x=4
