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patriot [66]
3 years ago
7

100 POINTS!!!!!!! I WILL GIVE BRAINLIEST!

Mathematics
1 answer:
abruzzese [7]3 years ago
3 0

Answer:

  • 8.4 miles

Step-by-step explanation:

Let the speed in the morning be s, then in the evening it is s - 4

<u>The distance is equal both directions:</u>

  • 45 min *s = 1 hr 10 min *(s - 4)

<u>Time in hours:</u>

  • 45*1/60*s = (1 + 10*1/60)(s - 4)
  • 3/4s = 7/6s - 7/6*4

<u>Multiply all terms by 12 to clear fraction:</u>

  • 9s = 14s - 56
  • 5s = 56
  • s = 56/5
  • s= 11.2 mph

<u>The distance is:</u>

  • 3/4*11.2 = 0.75*11.2 = 8.4 miles
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enot [183]

Answer: 24 tests

Step-by-step explanation:

Ms. Carey graded 1/3 of the tests and still had 16 tests to go.

This means that the 16 tests represent the remaining proportion of the total number of tests:

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3 0
2 years ago
A rectangle that is 2 inches by 3 inches has been scaled by a factor of 7.
loris [4]

Answer:

New\ Lengths = (14,21)

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Step-by-step explanation:

Given

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Length = 2 in

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Solving (a):

The side lengths of the new scale is calculated as follows;

New Lengths = Old Lengths * Scale Factor

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Solving (b): To go back to the original length

Given that the initial scale factor is 7;

The new scale factor is the reciprocal of the old factor;

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New\ Scale\ Factor = \frac{1}{7}

6 0
3 years ago
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That means there would be 28 in California and still 12 in Nevada or if California takes from Nevada it would be California 28 and Nevada 2

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The price of an item has been reduced by 30%. The original price was $30. What is the price of the item now ?
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