Answer: 77 seeds
Step-by-step explanation:
Given: The germination rate for zinnia seeds =78%
Let x be the total number of seeds he planted, then
The seeds germinated= 78% of x
⇒The seeds germinated= 0.78x
If James wants 60 zinnia plants for his yard, then it will give the equation
![0.78x=60\\\Rightarrow\ x=\frac{60}{0.78}\\\Rightarrow\frac{6000}{78}\\\Rightarrow\ x=76.92307\aprrox77](https://tex.z-dn.net/?f=0.78x%3D60%5C%5C%5CRightarrow%5C%20x%3D%5Cfrac%7B60%7D%7B0.78%7D%5C%5C%5CRightarrow%5Cfrac%7B6000%7D%7B78%7D%5C%5C%5CRightarrow%5C%20x%3D76.92307%5Caprrox77)
Hence, he should plant 77 seeds .
Answer:
V=706.85
Step-by-step explanation:
Well, first of when you want to find the volume of the cone you need to have a radius and hieght. And the radius is half the diameter, so divide the diameter into half: 10/2=5 in. and you already have the height so just plug in the numbers.
Formula: V= ![\frac{1}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7D)
![\pi](https://tex.z-dn.net/?f=%5Cpi)
h ---> V= ![\frac{1}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7D)
(
)(27)
And put the plugged in formula in your calculator and you'll find the answer!
V=706.85
I hope this helped.
<span>4(2x - 5) = 4
8x - 20 = 4
8x = 4 + 20
8x = 24
x = </span>
![\frac{24}{8}](https://tex.z-dn.net/?f=%20%5Cfrac%7B24%7D%7B8%7D%20)
x = 3
Part A:This equation has only one solution. {Working shown above}
Part B:The solution is x = 3. {Working shown above}
Answer:
how many marbles and how many colors do we have?
Step-by-step explanation:
Given the first was Windows, we're choosing the second from 17 macs and 12 Windows, so
![p = \dfrac{17}{17+12} = \dfrac{17}{29}](https://tex.z-dn.net/?f=p%20%3D%20%5Cdfrac%7B17%7D%7B17%2B12%7D%20%3D%20%5Cdfrac%7B17%7D%7B29%7D)