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adell [148]
3 years ago
15

What is the value of sin2a + cos2a + sec2a-tan2a Please

Mathematics
1 answer:
Artemon [7]3 years ago
5 0

Answer:

2

Step-by-step explanation:

sin²a + cos²a + sec²a - tan²a

sin²a + cos²a = 1

1 + tan²a = sec²a

So, sec²a - tan²a = 1

sin²a + cos²a + sec²a - tan²a

= 1 + 1 = 2

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For what value of "x" will the expression -3*5*x have a positive answer"
balu736 [363]

The value of that expression is positive whenever 'x' is negative.


3 0
3 years ago
Apply the Distributive property to rewrite 2(6-x)=3. Choose the correct answer below? *
photoshop1234 [79]

Answer:

12 -2x =3

Step-by-step explanation:

2(6-x)=3.

Distribute

2*6 -2*x = 3

12 -2x =3

4 0
3 years ago
Read 2 more answers
Is the answer -165° -125° 125° or 165° pleas help quickly
Mashutka [201]

Answer:

125

Step-by-step explanation:

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5 0
2 years ago
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Many freeways have service (or logo) signs that give information on attractions, camping, lodging, food, and gas services prior
Ne4ueva [31]

Answer:

H0 : μd = 0

H1 : μd ≠ 0

Test statistic = 0.6687 ;

Pvalue = 0.7482 ;

Fail to reject H0.

Step-by-step explanation:

H0 : μd = 0

H1 : μd ≠ 0

Given the data:

Before: 15 26 66 115 62 64

After: 16 24 42 80 78 73

Difference = -1 2 24 35 -18 -9

Mean difference, d ; Σd / n

d = Σx / n = ((-1) + 2 + 24 + 35 + (-18) + (-9))

d = Σx / n = 33 / 6 = 5.5

Test statistic = (d / std / sqrt(n))

std = sample standard deviation = 20.146

Test statistic = 5.5 ÷ (20.146/sqrt(6))

Test statistic = 0.6687

The Pvalue :

P(Z < 0.6687) = 0.7482

At α = 0.05

Pvalue > α ; Hence we fail to reject H0

The data does not suggest a significant mean difference in the average number of accidents after information was added to road signs.

5 0
3 years ago
Change these times to the 12-hour clock.
shepuryov [24]

Answer:

12.45 pm

7.30 pm

00 00

20 15

5 0
3 years ago
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