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Elis [28]
3 years ago
14

The ages of several trees in a park are shown below: 2 years, 28 years, 2 years, 20 years, 22 years What is the mean age of thes

e trees? (4 points)
Mathematics
2 answers:
ser-zykov [4K]3 years ago
6 0

Answer:The "mean" is just the normal arithmetic average that you are most likely already familiar with.

mean=(sum of elements)/(number of elements)

In this case:

mean=(2+28+2+20+22)/5

mean=74/5

mean=14.8

So the mean or average age of the trees is 14.8 years.

dmitriy555 [2]3 years ago
5 0

Answer:

The answer is 14.8 I took the test and got it right have a great day.

Step-by-step explanation:

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The Saum family is making a snack mix. They bought 12.4 oz of pretzels, 8.03
podryga [215]

Answer:

31.43 oz

Step-by-step explanation:

12.40 + 8.03 + 11 = 31.43

4 0
3 years ago
Can someone please help me please
Assoli18 [71]
A
Volume of the Cylinder
Givens
H = 60 yards.
Diameter = 20 yards
pi = 3.14

Formula
V = pi * r^2 * h

Calculations
r = d/2
r = 32/2
r = 16

V =  3.14 * 16^2 * 60 
V = 48230 cubic yards [Cylinder's Volume]

Cone
<em>Formula</em> 
V = 1/3 pi r^2 H

<em>Givens</em>
pi = 3.14
r = 16 yards
h = 20 yards

<em>Sub and solve</em>
V = 1/3 3.14 * 16^2 * 20
V = 5359 cubic yards.

<em>Total Volume of the structure</em>
48230 + 5359 = 53589 Cubic Yards

<em>Water Content</em>
The answer to this part requires a proportion.

1 Cubic yard will hold 201.97 gallons.
53589 yd^3 = x

1/201.97 = 53589 /x  [ You should get a pretty big answer]
x = 201.87 * 53589
x = 10 819 092 gallons can be held by the tank. 

10 819 092 gallons <<<< answer

B 
If the height of both the cylinder and the cone remain the same. If the radius doubles in both the cylinder and the cone then the tank will hold 4 times as much. 

Total volume before doubling the radius = pi * r^2 h + 1/3 pi r^2 h
New Total Volume = pi * (2*r)^2 h + 1/3 pi * (2r)^2 h
New Total volume = pi * 4r^2 h + 1/3 pi *4 r^2 h
New Total Volume = 4 [pi r^2 h + 1/3 pi r^2 h]
but pi r^2 h + 1/3 pi r^2 h is the total volume before doubling the radius

New volume = 4 original volume. <<<<< answer to part B
6 0
2 years ago
About 2% of children in the United States are allergic to peanuts. Choose three children at random and let the random variable X
VMariaS [17]
For the answer to the question above asking w<span>hat is the conditional probability that exactly two of the children will be allergic to peanuts, given that at least one of the three children suffers from this allergy?
The answer to the question above is 0.0012. I hope this helps</span>
3 0
2 years ago
I don't understand stand this​
yanalaym [24]

Step-by-step explanation:

step 1. ABCD is an isosceles trapezoid because AD and BC are parallel, AB and CD are congruent

step 2. x = 56° (definition of an isosceles trapezoid)

step 3. x + y + z + 56 = 360 (definition of a quadrilateral)

step 4. y = z (definition of an isosceles trapezoid)

step 5. 56 + 2y + 56 = 360

step 6. 2y = 248

step 7. y = 124°, z = 124°.

6 0
2 years ago
Write what the expressions below best represent within the context of the word problem.
Brilliant_brown [7]

X=2 NICKELS.

3*2=6 QUARTERS.

PROOF:

.25*6+.05*2=1.60

1.50+.10=1.60

1.60=1.60

3 0
3 years ago
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