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Lostsunrise [7]
3 years ago
8

Use euler's formula to find the missing number vertices: 11edges: 34Faces: ?

Mathematics
1 answer:
larisa [96]3 years ago
8 0

Answer:

F = 25

Step-by-step explanation:

Euler's formula for polyhedra states that

F + V - E = 2

Here V = 11, E = 34, thus

F + 11 - 34 = 2

F - 23 = 2  ( add 23 to both sides )

F = 25

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A certain pickup truck gets 20mpg in the city and 28 mpg on the highway. If the driver drives 270 mi on 11 gal of gas, determine
Snezhnost [94]

Answer:

95 city and 175 highway miles.

Step-by-step explanation:

The driver gets 20 mpg in city, and 28 mpg on the highway.

An equation that could be written is

20x+28y=270

This equation accounts for the distance traveled.

x+y=11

This equotion accounts for how many gallons were driven.

Multiply the bottom equation by 20, so you can solve the set of equations.

20x+28y=270

20x+20y=220

subtract them

8y=50

y=6.25

now plug this back into x+y=11

x+6.25=11

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Now 4.75×20=95 city miles and 6.25×28=175 highway miles.

8 0
3 years ago
Guided Practice
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B.

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Step-by-step explanation:

5 0
3 years ago
A store window shows 2 red caps and 8 greens caps. What percentage of the caps are red?
Alecsey [184]

Answer:

20%

Step-by-step explanation:

total caps 2+8=10

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4 0
3 years ago
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