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Veseljchak [2.6K]
2 years ago
9

HELP!!! WILL MARK AS BRAINLIEST!!

Mathematics
2 answers:
neonofarm [45]2 years ago
4 0
7/10- 1/4

7x2= 14
10x2= 20

1x5=5
4x5=20

14/20-5/20= 9/20 litre of orange juice
harina [27]2 years ago
3 0
9/20

explanation:

7/10 - 1/4
14/20 - 5/20
14-5/20
9/20
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If 4sintheta = -3, solve for theta given 0°>_theta>_360°
Soloha48 [4]

Answer:

311.41 degrees

Step-by-step explanation:

If 4 sin Ф = -3 and Ф is between 0 and 360 degrees, then we conclude that Ф must be either in Quadrant III or Quadrant IV (because the sine is negative).

Let's assume we're in Quadrant IV.  Then sin Ф = opp / hyp = -3/4; that is, the opp side is negative and has length 3, and the hypo is positive 4.

According to the Pythagorean Theorem,  (-3)^2 + x^2 = 4^2, or,

x^2 = 16 - 9 = 7.

Then x is either √7 or -√7.

To find the angle Ф, use the inverse sine function:

Ф = arcsin (-3/4).  Using a calculator we get the angle -40.59 degrees, which corresponds to (360 degrees - 40.59 degrees), or 311.41 degrees.  We can check this by finding the sine of 311.41 degrees; the result is -0.75, which matches "If 4sintheta = -3."  

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2 years ago
Which pair of the following tests is used to test for normality?
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Step-by-step explanation:

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3 years ago
What are the answers to these aswell mb?
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A hose fills a hot tub at a rate of 4.89 gallons per minute how many hours will it take to fill a 299 gallon hot tub
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4 0
3 years ago
Read 2 more answers
Solve for C.<br> -5/8c=20
iris [78.8K]
-5/8c = 20....multiply both sides by -8/5 (this cancels out the -5/8 on the left
c = 20(-8/5)
c = -160/5
c = - 32

check..
-5/8(-32) = 20
160/8 = 20
20 = 20 (correct)

so c = -32
8 0
3 years ago
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