Answer: ≈ 185.73009
Step-by-step explanation:
area of square:
area of circle:
length: 15
radius = diameter/2
radius: 5
area of square - area of circle = area between square and circle:
≈ 185.73009
hope it helps!
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A team of runners is needed to run a 1 3 -mile relay race. If each runner must run 1 9 mile, how many runners will be needed?
1 answer:
Answer:
3 runners
Step-by-step explanation:
The number of runners needed is the length of the race divided by the length each runner can run:
(1/3 mi)/(1/9 mi/runner) = 9/3 runner = 3 runners
_____
There are a couple of ways you can divide fractions:
→ "invert and multiply." That is, multiply the numerator by the reciprocal of the denominator. Here, that is (1/3)(9/1) = 9/3 = 3
→ make the denominators the same and use the ratio of the numerators. Here that is (1/3)/(1/9) = (3/9)/(1/9) = 3/1 = 3
→ use a calculator (see attached)
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Answer:
Serina should have solved for x in the second equation because it has a coefficient of 1.
Step-by-step explanation:
we have
----> equation A
---> equation B
we know that
To solve the system of equations in the most efficient way, solve for x equation B and then substitute the value of x in equation A
so
----> equation C
substitute equation C in equation A
solve for y
Find the value of x
substitute the value of y in the equation C
The solution is (3,4)
therefore
Serina should have solved for x in the second equation because it has a coefficient of 1.