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nekit [7.7K]
3 years ago
9

a spinner with 7 equally sized slices is shown below. The dial is spun and stops on a slice at random. What are the odds in favo

r of landing on a white slice?
Mathematics
1 answer:
faust18 [17]3 years ago
6 0

                                                  divide 100

                                                     by    7

                                                    14.2857

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PLEASE HELP ASAP 30 POINTS!!! WILL GIVE BRAINLIEST!!
r-ruslan [8.4K]

1. The factoring step is

sin²<em>θ</em> - cos²<em>θ</em> sin²<em>θ</em> = sin²<em>θ</em> (1 - cos²<em>θ</em>)

Then the Pythagorean identity is invoked:

cos²<em>θ</em> + sin²<em>θ</em> = 1   →   1 - cos²<em>θ</em> = sin²<em>θ</em>

so that

sin²<em>θ</em> - cos²<em>θ</em> sin²<em>θ</em> = sin²<em>θ</em> sin²<em>θ</em> = sin⁴<em>θ</em>

(third option)

<em />

2. Recall that <em>a</em> ² - <em>b</em> ² = (<em>a</em> - <em>b</em>) (<em>a</em> + <em>b</em>). The numerator here is such a difference of squares:

csc²<em>x</em> - 1 = (csc<em>x</em> - 1) (csc<em>x</em> + 1)

Then

(csc²<em>x</em> - 1) / (1 + sin<em>x</em>) = ((csc<em>x</em> - 1) (csc<em>x</em> + 1)) / (1 + sin<em>x</em>)

Recall that csc<em>x</em> = 1/sin<em>x</em>, so rewrite this as

… = ((1/sin<em>x</em> - 1) (1/sin<em>x</em> + 1)) / (1 + sin<em>x</em>)

In the numerator, pull out a factor of 1/sin<em>x</em> from both terms:

… = (1/sin<em>x</em> (1 - sin<em>x</em>) × 1/sin<em>x</em> (1 + sin<em>x</em>)) / (1 + sin<em>x</em>)

… = ((1 - sin<em>x</em>) (1 + sin<em>x</em>)) / (sin²<em>x</em> (1 + sin<em>x</em>))

Cancel the common factor of 1 + sin<em>x</em> :

… = (1 - sin<em>x</em>) / sin²<em>x</em>

Expand the fraction and rewrite sin in terms of csc :

… = 1/sin²<em>x</em> - sin<em>x</em>/sin²<em>x</em>

… = 1/sin²<em>x</em> - 1/sin<em>x</em>

… = csc²<em>x</em> - csc<em>x</em>

Factor out csc<em>x</em> to get the second option,

… = csc<em>x</em> (csc<em>x</em> - 1)

5 0
3 years ago
Which equation has the least steep graph?
MAVERICK [17]

Answer:

y=\frac{1}{4}x+6

Step-by-step explanation:

y=\frac{1}{4}x+6 is the least steeped graph

  1. The greater the slope, the steeper the line.
  2. Also you use the absolute values of the slopes when determining the steepness.
  • So here it would be: \frac{3}{4},7,\frac{1}{4},2
  • Now, arrange them from least to greatest: \frac{1}{4},\frac{3}{4},2,7

As you can see, \frac{1}{4} is the smallest number/slope.

Hope this helps!

7 0
3 years ago
Please answer this math problem correctly
Luda [366]

Answer:

Mr Singleton will only need $198 to buy calculator for the 9 student without one. Therefore run fundraiser to raise $1000 for this is No it is much too high

Step-by-step explanation:

If there are 29 student in Mr Singleton class, and 18 has calculator. then those without calculator will be

29 - 18 = 9

if each calculator costs $22, then to get calculator for them all, Mr Singleton will need

$22 × 9 = $198

If Mr Singleton want to estimate $1000 for this at fundraiser, no it is much too high

6 0
4 years ago
Fabio and Carlos play on a basketball team together. In the last game, Fabio had
Andreas93 [3]

Answer:

19 points

Step-by-step explanation:

Given that :

Fabio had 7 points less than 2 times as many points as Carlos

Let Fabio's point = f

Carlos point = c

Equation relating the number of points scored by both players.

Points scored by Fabio = 31

f = 2c - 7

Carlos point = c

31 = 2c - 7

31 + 7 = 2c

38 = 2c

c = 38/2

c = 19

Hence, Carlos's points is 19

8 0
3 years ago
Cameron runs 2.4 miles 3 days a week. How many miles does he run total in one week?
Ainat [17]

Answer:

5.6

Step-by-step explanation:

2.4 / 3 = x / 7

2.4 x 7 = 16.8

16.8 ÷ 3 = 5.6

5 0
3 years ago
Read 2 more answers
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