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dmitriy555 [2]
3 years ago
12

Brian drove 120 miles at speed of 60 miles per hour. He drove the same distance back home at average speed of 40 miles per hour.

Brian adds these speeds and divides by 2 to come up with an average speed of 50 miles per hour. What is wrong with his reasoning? Find his average speed. Thx 4 the help
Mathematics
1 answer:
Solnce55 [7]3 years ago
5 0
I dont really understand the question, 
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Estimate the original volume of the pyramid in Fig. 15.28, given that its frustum has a 4 m by 4 m square top which is 12 m vert
puteri [66]

The volume of the pyramid is 2496 cu.m.

<h3>What is a Pyramid ?</h3>

A pyramid is a three dimensional structure which has a polygon base and  in general triangular faces which join at the top .

It is given that

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The volume of a square pyramid with a  \rm frustum is given by

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To know more about Pyramid

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1.<br> 15% of what number is 45?
Rom4ik [11]

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Given: a||b, m∠ 6=128° Find: m∠1, m∠3
goldfiish [28.3K]

Answer:

m∠1 = 52°

m∠3 = 52°

Step-by-step explanation:

Step 1:

Since b is a straight line and is transversed by line m and we are given m∠6 = 128°, we can find m∠5, which is 180 - m∠6, giving us 52° for ∠5.

Step 2:

Because a and b are parallel, m∠5 and the m∠1 are the same, so we have m∠1 = 52° as one of our answers needed

Step 3: Because ∠3 is vertical to ∠1, we can use the vertical angles theory and say that m∠1 is equal to m∠3. Therefore, m∠3 = 52°

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Yanka [14]

Answer:A

Step-by-step explanation:

If the auto insurance covers theft up to $15,000 and his car value is less than it ($8,000), he is going to pay only $250 deductible. It means that it covers values until $15,000.

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