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Alisiya [41]
3 years ago
10

Find the Area Please

Mathematics
1 answer:
Gnom [1K]3 years ago
5 0

Answer:

I can't see what ur talking about

Step-by-step explanation:

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If cosθ = x, then ± √(1+x)/2 = _____.<br><br>cosθ/2<br>sinθ/2<br>cos2θ<br>sin2θ
Lyrx [107]

Answer:

cos(theta/2) = sqrt((1+x)/2)

Step-by-step explanation:

From the double angle formula

cos^2(t)-sin^2(t) = cos(2t)  ...................(1)

cos^2(x)+sin^2(x) = cos(t-t) =1...............(2)

Add (1) and (2)

2cos^2(t) = 1+cos(2t)

cos^2(t) = (1+cos(2t))/2

cos(t) = sqrt((1+cos(2t))/2)

substitute t = theta/2

cos(theta/2) = sqrt((1+cos(theta))/2)

substitute cos(theta) = x

cos(theta/2) = sqrt((1+x)/2)

6 0
4 years ago
Two roads cross at an intersection. If one of the angles created is 50 degrees what’s are the three angles
Natasha2012 [34]
50 degrees is one while the other two are 130 degrees
4 0
3 years ago
A car traveling 281 miles 4 hours and 40 minutes what was the average speed of the car in miles per hours
den301095 [7]

ok this one is tricky but I think I can handle it.

The correct answer is more than 60mph but less than 61mph.

60.3mph = 281.399598

or 60.2mph =280.932932

Those are my closest answers.

I really hope this helps

5 0
4 years ago
3) Tara sold candles to raise money for new playground equipment at her school.
Ronch [10]

Answer:

Tara's current expression finds how much the school will be keeping. 50 x 2/5 (also written as 50 x 0.4) totals out as 20. $20 is 2/5 of $50. The expression that Tara SHOULD have written to find how much goes to the candle company would be 50 x 3/5 (also written as 50 x 0.6), as this adds up to 30. $30 is 3/5 of $50.

Step-by-step explanation:

50/5 = 10 which means that 1/5 of 50 = 10.

2/5 of 50 ($20) is kept by the school. This is what Tara's expression finds. This means that $30 is sent to the candle company, and can be found with the expression 50 x 3/5.

The decimals are created by dividing the numerator of the fraction by the denominator (I find it easier to do math with decimals).

3 0
3 years ago
What are the factors of 21
sweet-ann [11.9K]

Answer:

21: 3and 7 factors

54: 6and 9 factors

3 0
3 years ago
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