Answer:
1530cm
Step-by-step explanation:
First figure (9x10)x9=810
Second figure (18x10)x4=720
720+810=1530
Answer:
Don't quote me on this but I believe the answer is that he is 8 years old right now if that's what you're looking for
Step-by-step explanation:
8 + 16 = 24
8 × 3 = 24
That's what I thought
Answer:
4 I think
Step-by-step explanation:
hope this help's
Let b= length and a=width
Area= a*b and the problem said b=2a+3 (the length is 3ft more than double the width)
Replace b into Area formula:
Area= a*(2a+3) and we know that Area=77ft from the problem, so:
77=2a^2+3a now order and equal to zero:
2a^2+3a=77 now solve this with quadratic formula and you will get so values for a: -7ft and 5.5ft as you know the dimensions could not be negative so the correct answer for "a" side is 5.5ft, for getting the b side you haeve to replace a=5.5 into b=2a+3 and you will get b=2*5.5+3= 14ft.
Finished.
Answer:
the answer are x=4y-20
and x represents the independent variable and y represents the dependent variable
