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Orlov [11]
3 years ago
11

Hurry, it’s a test!!! Plz!

Mathematics
1 answer:
kondor19780726 [428]3 years ago
6 0

Answer:

estimate 215 answer 10

Step-by-step explanation:

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Dilation ( effects of changing dimensions on perimeter and area)
Archy [21]
The answer is C) 64in.
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4 years ago
The extensions of the legs AB and CD of a trapezoid ABCD intersect at point E. Find the lengths of the sides of △AED if AB=5cm,
Lynna [10]

Answer:

  AE = 15 cm; ED = 18 cm; AD = 15 cm (given)

Step-by-step explanation:

ΔBEC ~ ΔAED so ...

   AD/BC = AE/BE = (BE+AB)/BE = 1 + AB/BE

Substituting given numbers (lengths in centimeters), we have ...

  15/10 = 1 + 5/BE

  1/2 = 5/BE

  BE = 10

Similarly, ...

  1/2 = 6/CE

  CE = 12

Then the unknown sides are ...

  AE = AB + BE = 5 + 10 = 15 . . . cm

  ED = CE + CD = 12 + 6 = 18 . . . cm

8 0
3 years ago
Raymond has taken a position as the navigator on a speed boat racing team. The team entered a race that starts at Daytona Beach,
erik [133]
Using the rules of cosines, the <span>measure of the turn between the second and third legs of the race</span> is given by

\cos^{-1}\left( \frac{180^2+160^2-140^2}{2\times180\times160} \right)=\cos^{-1}\left( \frac{32,400+26,600-19,600}{57,600} \right) \\  \\ =\cos^{-1}\left( \frac{39,400}{57,600} \right)=\cos^{-1}(0.6840)\approx47^o
4 0
3 years ago
Read 2 more answers
The total cost for 6 mangoes and four apples is $46. Which equation represent this information?
Eva8 [605]

Answer:

3x + 2y = 23

Step-by-step explanation:

mangoe = x

apple = y

6x + 4y = 46

<em>divide </em><em>them </em><em>by </em><em>2</em>

3x + 2y = 23

8 0
3 years ago
A random sample of n = 16 professors from a university has been selected; salaries have been plotted on the following Q-Q plot.
Semenov [28]

Answer:

The objective of the confidence interval is to give a range in which the real mean of the population is placed, with a degree of confidence given by the level of significance.

The conclusion we can make is that there is 95% of probability that the mean of the population (professor's average salary) is within $99,881 and $171,172.

Step-by-step explanation:

This is a case in which, from a sample os size n=16, a confidence interval is constructed.

The objective of the confidence interval is to give a range in which the real mean of the population is placed, with a degree of confidence given by the level of significance. In this case, the probability that the real mean is within the interval is 95%.

5 0
3 years ago
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