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aleksley [76]
2 years ago
5

Brian, Kelsey, and Geoff each have a remote-controlled car. They simultaneously started their cars and drove them in a straight

line away from a motion sensor. The sensor recorded the distance to each car in the table below. Distance from Sensor to Each Car Time since starting cars Distance to Brian’s car Distance to Kelsey’s car Distance to Geoff’s car 1 sec 34 cm 27 cm 27 cm 3 sec 38 cm 31 cm 33 cm 5 sec 42 cm 35 cm 39 cm 8 sec 48 cm 41 cm 48 cm Which statement is best supported by the table?
Mathematics
1 answer:
shutvik [7]2 years ago
3 0

Answer:

Brian’s and Kelsey’s cars traveled at the same rate.

Step-by-step explanation:

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Solve, cross multiply<br><br>(x+2) / 2x = 3/2
bonufazy [111]

Answer:

1

Step-by-step explanation:

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2 years ago
ASAP please help I’m failing math
MariettaO [177]

Answer:

Part A) The volume of the entire cone is 168\pi\ in^3

Part B) see the explanation

Step-by-step explanation:

Part A) we know that

The volume of a cone is equal to

V=\frac{1}{3}\pi r^{2}h

where

r is the radius of the base of the cone

h is the height of the cone

In this problem triangle ABD is similar to triangle ACE

Remember that If two figures are similar, then the ratio of its corresponding sides is proportional

so

\frac{AB}{AC}=\frac{BD}{CE}

substitute the given values

\frac{7}{14}=\frac{3}{x}

solve for x

x=14(3)/7\\x=6\ in

To find out the volume of the entire cone we have

r=CE=x=6\ in

h=AC=14\ in

substitute in the formula

V=\frac{1}{3}\pi (6)^{2}(14)

V=168\pi\ in^3

Part B) How did you determine the value for x in triangle ACE

In this problem triangle ABD is similar to triangle ACE

If two figures are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent

so

\frac{AB}{AC}=\frac{BD}{CE}

substitute the given values and solve for x

5 0
3 years ago
A certain process for removing copper from copper bearing ore had been in use for a period of time, and it is known that this pr
Anika [276]

Answer:

d. Ore treated with the new process.

Step-by-step explanation:

This is a common practice in statistics, in which we use a sample of a population to infer something about the entire population. We should use a sample of 100.

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In this problem, we have that:

A new process that is supposed to increase the recovered amount is being tested. In a simple random sample of 100 batches of ore, an average of 42 pounds per ton were recovered using the new process.

So the population of interest is the ore treated with new process. We use a sample of 100 to gather information about the entire population.

So the correct answer is:

d. Ore treated with the new process.

5 0
2 years ago
What must be the length of ZY in order for ZY to be tangent to circle X at point Y? 14 units 15 units 16 units 17 units
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Answer:

The answer is 15 units!!

Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
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