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masya89 [10]
3 years ago
9

Evaluate the expression for r=3 15+r=

Mathematics
2 answers:
I am Lyosha [343]3 years ago
6 0
It would be 18 be r turns into 3
Anuta_ua [19.1K]3 years ago
5 0

Answer:

18

15=3=18

dsfjhsdf

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This section of a concrete skateboard ramp has the shape of a triangular prism. Find the volume of the triangular prism. Find th
NISA [10]

Answer:

The volume of the triangular prism: 59.2 ft^{3}

The value of the concrete used is: 16*4 = $64

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  Please have a look at the attached photo

My answer:

As we know that, the formula to find out the volume of the triangular prism is:

V = \frac{1}{2} a*b*h when h is the height and a&b are the length of the two square edges. So we have:

  • V = \frac{1}{2}*4*4*7.4 = 59.2 ft^{3}

To find the concrete used in the ramp if the cost of concrete is $ 4.00 per cubic foot, we need to know the area of the ramp, which is:

S = 4*4 = 16 ft^{2}

Hence, the value of the concrete used is: 16*4 = $64

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Step-by-step explanation:

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2 4/6 or 2 2/3

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Step-by-step explanation:

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