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erica [24]
3 years ago
6

Sorry its sideways :)​

Mathematics
1 answer:
swat323 years ago
3 0

Answer:

(√6 - √2) / 4

Step-by-step explanation:

cos(x+y) = cosx siny - sinx cosy

cos(75°) = cos(30°+45°) = cos30° sin45° -sin30°cos45°

= √3/2 * √2/2 - 1/2 * √2/2

=(√6 - √2) / 4

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What is the given value of the variable 7/8 times C for C equals eight
goldenfox [79]
7/8 * C

C = 8

7/8 * 8

56/8

7
6 0
3 years ago
Suppose the sample space for a continuous random variable is 0 to 80. If the area under the density curve for the variable from
nikklg [1K]
Hello,

Area under the curve is 1.

So p(x>5)=1-p(x<5)=1-0.0625=0.9375

Answer A

4 0
3 years ago
A random sample of adult female reaction times has a sample mean of x¯=394.3 milliseconds and sample standard deviation of s=84.
s2008m [1.1K]

Answer:

99.7%

Step-by-step explanation:

Given that mean (μ) = 394.3 ms and standard deviation (σ) = 84.6 ms.

The empirical rule states that for a normal distribution:

  1. 68% falls within one standard deviation (μ ± σ)
  2. 95% falls within two standard deviation (μ ± 2σ)
  3. 99.7% falls within three standard deviation (μ ± 3σ)

one standard deviation = 394.3 ± 84.6 = (309.7, 478.9). 68% falls within 309.7 and 478.9 ms

two standard deviation = 394.3 ± 2 × 84.6 = (225.1, 563.5). 95% falls within 225.1 and 563.5 ms

three standard deviation = 394.3 ± 3 × 84.6 = (140.5, 648.1). 99.7% falls within 140.5 and 648.1 ms

8 0
3 years ago
Plz help need it’s down now
Alex_Xolod [135]

Answer:

A. is Inverse correlation and B. is More money

Step-by-step explanation:

A. the relationship is inverse, which means that the more weeks had past, the less he spent

B. Since he is spending less money each week and he earns the same amount, this means that he is saving more money

4 0
3 years ago
Please I need your help
Svetllana [295]

Answer:

249mm

Step-by-step explanation:

You find volume of the overall figure- 11 x 3 x 13= 429

Then find volumes of missing parts of overall complete figure and subtract from the overall volume....

5 x 4 x 3= 60

429-60=369

-------------------------------------

8 x 5 x 3= 120

369-120= 249

Hope this helped!! Hope you got it- please leave a rating and mark as Brainliest. Thank You :) (I really want to go to sleep right now, would have explained further, sorry)

8 0
4 years ago
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