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2 years ago

Verify that each equation is an identity. Show Work plzz!!

Mathematics

1 answer:

BlackZzzverrR [31]2 years ago

6 0

Answer:

Step-by-step explanation:

sin² x + cos² x = 1

$\frac{1}{cosx}$ = sec x

( $\frac{1}{cosx}$ )² = sec² x

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Which word describes the slope of the line?<br> o positive<br> O negative<br> O zero<br> undefined

4vir4ik [10]

I’m not to sure my my guess is zero because it is not going up or down

7 0

3 years ago

During the regular season, a National Basketball Association team plays 82 games and a National Football League team plays 16 ga

Naddika [18.5K]

Answer:

NFL teams play 16 regular season games each year, NHL and NBA teams play 82, while MLB teams play 162-could invalidate direct comparisons of win percentages alone. As an example, the highest annual team winning percentage is roughly 87% in the NFL but only 61% in MLB and part (but not all) of that difference is undoubtedly tied to the shorter NFL regular season

5 0

3 years ago

Question

AlekseyPX

Answer:

The population mean is 5 volts

Step-by-step explanation:

Output voltage is assumed to be normally distributed, with standard deviation 0.25 Volts

s=0.25

n = 8

$H_0:\mu = 5\\H_a:\mu \neq 5$

Sample mean = $\bar{x}=4.85$

Since n < 30 and population standard deviation is unknown

So, we will use t test

Formula : $t = \frac{x-\mu}{\frac{s}{\sqrt{n}}}$

$t = \frac{4.85-5}{\frac{0.25}{\sqrt{8}}}$

t=-1.69

Refer the t table for p value

Degree of freedom = n-1 = 8-1 = 7

So, $t_{(df,\alpha)}=t_{7,0.05}=2.365$

P value >α

So, We are failed to reject null hypothesis

Hence The population mean is 5 volts

7 0

3 years ago

Chris has a bag of four apples. Three of the apples are red and one of them is green. He also has two

pashok25 [27]

Answer: 3/8

Step-by-step explanation:

It’s the answer :>

5 0

3 years ago

Read 2 more answers

A garden has 8 white roses and 11 red roses. One rose is plucked from the garden and then one more rose is plucked without repla

liberstina [14]

P(r/w) is the probability of picking a red rose at first picking and a white rose at second picking.
P(w/r) is the probability of picking a white rose at first picking and a red rose at second picking.

P(r/w) = $\frac{11}{19}$ × $\frac{8}{18}$ = $\frac{88}{342}$
P(w/r) = $\frac{8}{19}$ × $\frac{11}{18}$ = $\frac{88}{342}$

Notice that the second fraction is out of 18 because the second picking of rose will be out of 18 since the first rose is not replaced.

P(r/w) equals to P(w/r)

3 0

4 years ago