Answer: A) 46.5 cm
Step-by-step explanation:
Circumference = 2 π r or Circumference = π d
In this case, they give us the diameter = 14.8 cm. Therefore the radius = 14.8/2 = 7.4 cm.
π ≈ 3.14.
We can use either equation above, but because the diameter was given, we will use c = πd for simplicity.
C = π d
= (3.14)(14.8)
= 46.47 cm, which rounds to 46.5 cm
Answer:
Im not sure but i belive the answer is −4<x<2
Answer:
Step-by-step explanation:
<u>Given equation</u>
- f(t) = 2^(kt)
- f - number of cells, t - number of months, k- coefficient
<u>We got 32 cells in the first month. It means:</u>
<u>Using these numbers we can find the coefficient k:</u>
- 32 = 2^(k*1)
- 2^5 = 2^k
- k = 5
<u>Then the equation becomes:</u>
<u>Average time is 9 months, we can calculate the number of cells:</u>
- f(9) = 2^(5*9) = 2^45 ≈ 3.5*10^13
Answer:
x= -7/10 or x= -0.7 , y= 7
Step-by-step explanation:
Find the x-intercept: Find the y-intercept:
y= 5×2+10x-3 y= 5×2+10x-3
0=10+10x-3 y= 5×2+10×0-3
0=7+10x y= 7
-10x=7
x=-7/10
Answer:
180
Step-by-step explanation:
A negative by negative is positive. So, you can pretend that the numbers are 6 and 30. Product means the answer for multiplication. In this case, product of 6 and 30 is 180. The product of -6 and -30 is 180.
Therefore, the answer is 180.