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2 years ago

The equation 3sin x + cos^2 x = 2 is solved below (see image). Which of the following best describes the solution (see image)?

Mathematics

2 answers:

sergiy2304 [10]2 years ago

6 0

2 is the right answer

dolphi86 [110]2 years ago

4 0

B) The equation was factored incorrectly

sin^{2}(x) - 3sin(x) + 1 IS NOT EQUAL TO (sin(x) - 3)(sin(x) + 1)

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gladu [14]

Answer:

70 degrees

Opposite angles are equal to each other

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2 years ago

Help?????????????????

Law Incorporation [45]

Answer:

54 lbs.

Step-by-step explanation:

7 x 6 = 42

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42+12=54

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2 years ago

Which situation represents a proportional relationship?

Natalka [10]

Answer:

B) Jack biked 5 miles in 25 minutes and 8 miles in 40 minutes.

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y=kx$

The ratio between the two variables is a constant called constant of proportionality k

$k=y/x$

<u><em>Verify each case</em></u>

A) Julie sold 4 necklaces for $12 and 9 necklaces for $25.

$\frac{4}{12}=\frac{9}{25}$

Multiply in cross

$4(25)=9(12)\\100\neq108$

Is not true

therefore

The situation not represent a proportional relationship

B) Jack biked 5 miles in 25 minutes and 8 miles in 40 minutes.

$\frac{5}{25}=\frac{8}{40}$

Multiply in cross

$5(40)=8(25)\\200=200$

Is true

therefore

The situation represent a proportional relationship

C) Larry packed 24 apples in 6 boxes and 46 apples in 9 boxes

$\frac{24}{6}=\frac{46}{9}$

Multiply in cross

$24(9)=46(6)\\216\neq276$

Is not true

therefore

The situation not represent a proportional relationship

D) Allie put 14 pieces of candy in 2 bags and 30 pieces of candy in 4 bags

$\frac{14}{2}=\frac{30}{4}$

Multiply in cross

$14(4)=30(2)\\56\neq60$

Is not true

therefore

The situation not represent a proportional relationship

7 0

3 years ago

A bookseller bought 80 books at rs 30 each 20 books were stolen and he sold the remaining books at 5% loss find the selling pric

Blizzard [7]

Answer:

rs 38.

Step-by-step explanation:

Total cost of the 80 books = 80*30 = rs 2400.

He had 60 books to sell and made a 5% loss.

Thus his income from these books was 2400 - 0.05*2400 = rs 2280.

So the selling price of each book was 2280 / 60 = rs 38.

8 0

3 years ago

A rectangle has a perimeter of 68 inches. Its length is 2 inches less than 3 times its width. What are the length and width of t

Evgesh-ka [11]

2(3x-2+x)=68 in

thats all i know, sorry

7 0

3 years ago