The area is about 91 units^2
The perimeter is about 39 units
Step-by-step explanation:
arithmetic sequence.
an = an-1 + c = a1 + (n-1)c
c is in our case 2 (every new shape has 2 more vertices).
we have a a1 = 3.
an = 3 + 2(n-1)
so,
a21 = 3 + 2(20) = 3 + 40 = 43
the 21st shadow will have 43 vertices.
Answer:
x= -9/4=-2.25
Step-by-step explanation:
plz rate and thank me if it is correct again i am a begginer!!! thank you:)
Step-by-step explanation:
confidence coefficient for 99% is 2.58
2.58 * 19.4/sqrt(n) = 0.04
2.598*19.4/0.04 = sqrt(n)
( 2.598*19.4/0.04)^2 = n
1587676
Answer:
33
Step-by-step explanation:
Here, d represents the number of push-ups Darnell completed during his previous personal best and k represent the number of push-ups Katie completed,
∵ According to the question,
Darnell's current push ups = d + 8,
Mia's push-ups = d,
Katie push-ups = d + 6
Again according to the question,
d + 8 = 35 ⇒ d = 27,
Hence, the number of push-ups completed by Katie, k = d + 6 = 27 + 6 = 33