Answer:
Her answer is wrong because she the object cannot hit the ground at negative seconds. She could’ve have used other methods because she used the quadratic formula. The advantages is that it works for every situation. The disadvantages is that it takes longer. She should’ve used a different method.
Step-by-step explanation:
So, first, what are the two sides?
let's call then x and y
we know that 2(x+y)=12.5 (that's the distance around)
so that means that x+y=6.25 (I just divided both by 2)
now, x=4y (from "4 times as long as it is wide")
so we can substitute:
x+4x=6.25
5x=6.25
x=1.25
so one side, is 1.25 and the other will be 1.25*4=5
and for the area we multiply the two:
1.25*5=6.25 square kilometers, and this is the answer!
Answer:
1000
Step-by-step explanation:
bc i dont know thats why hope it helped
Answer:
A, C, and D
Step-by-step explanation:
Answer:
A=πr²=π·3²≈28.27433
To find the area of a circle, use the equation πr²
The image is a bit blurry so from what I saw r (radius) is 3 otherwise you can use this equation if r is not 3.
If π was replaced with 3.14 the answer is 28.26 ft².
