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Lyrx [107]
3 years ago
14

Problem is Sin38-cos52

Mathematics
1 answer:
Paha777 [63]3 years ago
3 0
Notice that 38 and 52 make a total of 90
sinA=cos(90-A)
sin38=cos52, therefore the answer is zero
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saw5 [17]

Answer:

B) X = 90

Step-by-step explanation:

If you plug in every answer choice as "X," you can easily find which answer helps the equation equal 40.

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3 years ago
Solve the system using elimination
Mamont248 [21]

13x - y = 3 .....(1)

x - 6y = -33 ......(2)

eqn (2) × 13

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(3) - (1)

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(-). (+). (-)

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5 0
3 years ago
Read 2 more answers
10.
OleMash [197]

Answer:

40% (option C)

Step-by-step explanation:

To find the answer, divide the number of events played in other towns by the total number of performances the band did.

Applying this:

12 / (18 + 12) =

12 / 30 =

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4 0
3 years ago
The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a me
faust18 [17]

Answer:

Almost 2.5% of the students spent more than $275 in a semester.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

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235 + 2*20 = $275

Almost 2.5% of the students spent more than $275 in a semester.

4 0
3 years ago
In ABC, point D is the midpoint of AC. Which term describes BD?
natali 33 [55]
The term that described BD is

C. Median

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5 0
3 years ago
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