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yKpoI14uk [10]
3 years ago
7

I need help pleaseeeeee

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
7 0
The second one!!! For further help use cymath.com
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A pile of earth removed from an excavation is a cone measuring 12 ft high and 30 ft across its base. How many trips will it take
sattari [20]

Answer:

12 trips

Step-by-step explanation:

Given;

Dimension of cone shapef pile of earth;

height h = 12 ft = 4 yards

diameter d = 30 ft = 10 yards

radius r = d/2 = 10/2 = 5 yards

The volume of a cone V;

V = (1/3)πr^2 h

Substituting the given values;

V = (1/3) ×π × 5^2 × 4 cubic yards

V = 104.72 cubic yards

Given that a dump truck have a capacity of 9 cubic yards.

Vc = 9 cubic yards

Number of trips it will take is;

N = Volume of earth pile/truck capacity

N = V/Vc

Substituting the values;

N = 104.72/9

N = 11.64

N ≈ 12 trips

Therefore, the truck will make 12 trips

8 0
3 years ago
Find the equation of a line given the point and slope (1,3) m=3
ELEN [110]
Simple....

we know the formula you need to use is y=mx+b....

plug 'n chug....

3=3(1)+b

3=3+b
-3   -3
b=0

Thus.....y=3x


Thus, your answer.
8 0
3 years ago
I need help with this math problem ASAP please an explanation too
Rufina [12.5K]

Answer:

the answer is 300

Step-by-step explanation:

4 0
2 years ago
Help again................
GREYUIT [131]

Answer:

Adult ticket = $7

Kids ticket = $3

Step-by-step explanation:

Math!

4 0
2 years ago
Read 2 more answers
Find the distance between the points (4,3) and (1,0).
Liula [17]

Answer:

distance = \sqrt{(x_{1} -x_{2})^2+(y_{1} -y_{2})^2  }

             =\sqrt{(1-4)^2+(0-3)^2  } \\=\sqrt{3^2 + 3^2}\\=\sqrt{18}\\=3\sqrt{2}

8 0
3 years ago
Read 2 more answers
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