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Murljashka [212]
3 years ago
14

If two angles are complementary then both angles must be acute true or false

Mathematics
1 answer:
Oxana [17]3 years ago
7 0

Answer:

If two angles are acute angles, then they are complementary. Incorrect. The converse is “If two angles are complementary, then they are acute angles” which is true and the original statement was false because two acute angles are not always complementary.

Step-by-step explanation:

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Sharon paid $78 sales tax on a new camera. If the sales tax is 6.5%, what was the cost of the camera?
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Answer:

$1200

Step-by-step explanation:

$1200

Step-by-step explanation:

78 = 6.5%

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binder: Liquid substance used in paint and other media to bind particles of pigment together.

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Step-by-step explanation:

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3 years ago
G a survey of property owners' opinions about a street-widening project was taken to determine if owners' opinions were related
Naily [24]

Answer:

The expected frequency for people against the project and who have over 120 feet of property foot frontage is 3.9.

Step-by-step explanation:

The data provided is:

                                                   Opinion    

Front Footage   For       Undecided Against    Total

Under 45 feet    12                4              4              20

  45-120 feet           35                5             30      70

Over 120 feet     3                2              5              10

       Total           50                11             39    100

The formula to compute the expected frequency is:

E(X)=\frac{\text{Row Total}\times \text{Column Total}}{\text{TOTAL}}

Compute the expected frequency for people against the project and who have over 120 feet of property foot frontage as follows:

E(X)=\frac{\text{Row Total}\times \text{Column Total}}{\text{TOTAL}}

E(5)=\frac{10\times 39}{100}=\frac{39}{10}=3.9

Thus, the expected frequency for people against the project and who have over 120 feet of property foot frontage is 3.9.

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3 years ago
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