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3 years ago

6

What is the value of sin(−θ) ?

1 answer:

Neko [114]3 years ago

5 0

Answer:

A

Step-by-step explanation:

The cosine of a right triangle is the adjacent over the hypotenuse. If the cosine is -3/5 then it must be a right triangle with sides 3, 4, & 5 since this is a Pythagorean triple. This means the sin will be -4/5. We know its negative because the tangent is positive so this is the 3rd quadrant where both Sine and Cosine are negative.

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Use multiplication to find 2 equivalent fractions to 3/4 and 4/5

Gre4nikov [31]

3/4 = 6/8 = 9/12
4/5 = 8/10 = 12/15

8 0

3 years ago

Read 2 more answers

Simplify: -16b4 + (-18b4)

GuDViN [60]

Answer:

-34b4

Step-by-step explanation:

Since the variables are the same b4, you just add the constants (-16 & -18).

4 0

1 year ago

4x - x<br> 8x-2<br> Simplify the expression

oksian1 [2.3K]

11x-2
You combine same so
4x-1x =3x
3x +8x= 11x
11x-2

3 0

3 years ago

Three students, Matthew, Thompson and Amos shared #15000 in the ratio of 5:2:x respectively. If Matthew's share is 7500, calcula

jasenka [17]

Answer:

The value of x is 3.

Step-by-step explanation:

Matthew earned 7500 of 15000, which is exactly half the total amount, meaning that the fraction corresponding to his earnings is 1/2.

Rate of 5:2:x, with number 5 corresponding to Matthew, mean that his fraction of the earnings, in function of x is given by:

$\frac{5}{5 + 2 + x} = \frac{5}{7 + x}$

Both fractions are equal, so:

$\frac{5}{7 + x} = \frac{1}{2}$

Applying cross multiplication:

$7 + x = 10$

$x = 10 - 7$

$x = 3$

The value of x is 3.

5 0

3 years ago

Please help this is in my test tomorrow♡

MAVERICK [17]

Answer:

<u><em>67</em></u>

Step-by-step explanation:

<u><em>50-40+87-30</em></u>

=50+(- 40)+87(-30)

=50+87+(-40)+(-30)

=(50+87+(-40)+(-30)

=137+(-70)

=67

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<u><em>when he wins, we add points. When he loses ,we subtract points.The score is 50 points. We right an expression to find the final score </em></u>

5 0

3 years ago