Answer: x> y+2/5
Step-by-step explanation:
X=mumber of boys
y=number of girls.
I suggest this system of equations:
x+y=30
x=4y
We can solve this system of equations by susbtitution method.
4y+y=30
5y=30
y=30/5=6
x=4y
x=4*6=24
Answer: there are 6 girls
Answer:
True.
Here, radius of the sphere = radius of the cylinder = r
Diameter of the sphere = height of the cylinder = 2r
Surface area of the sphere = 4πr2
Curved surface area of the cylinder = 2πr (2r) = 4πr2
Step-by-step explanation:
<u>Answer:</u>
They tagged 90 male deer
s
<u>Explanation:</u>
Given a park ranger calculated 60% of male deer
Consider the deer they tagged to be x
According to question,
20% of deer were older than 4 years which equals 18
Then, 20% of x = 18
Solving for x,
x = 1800/20
x = 90
So, they tagged 90 male deer
Answer:
21 feet
Step-by-step explanation:
To solve this question, we would be using the proportion
Shadow /Height
From the question:.
Manny's shadow = 414 feet
Manny's Height = 512 feet
Height of the tree = ? = x
Shadow of the tree = 17 feet
Hence:
414/512 = 17/ x
Cross Multiply
414 × x = 512 × 17
x = 512 × 17/414
x = 21.024154589 feet
x ≈ Approximately = 21 feet
The height of the tree = 21 feet