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ozzi
3 years ago
11

PLEASE HELP WITH THESE TWO QUESTIONSSS 1. Which value is equivalent to sin20∘?

Mathematics
1 answer:
Nata [24]3 years ago
4 0

Answer:

a) \cos(70\degree)

b) 12.72 units

Step-by-step explanation:

Recall that the sine and cosine are completed functions.

This means that:  \sin(x)=\cos(90-x)

\sin(20\degree)=\cos(90-20)

\sin(20\degree)=\cos(70\degree)

Recall that: sine ratio is opposite/hypotenuse

\sin 58=\frac{|PQ|}{15}

This implies that:

|PQ|=15\sin 58

|PQ|=15(0.848)

|PQ|=12.72

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Multiple correct answers
tatuchka [14]

Answer: the answers I got were "B" 5, and "D" 7.

Hope this helps


Step-by-step explanation:


5 0
3 years ago
The equation y = kx represents a proportional relationship between x and y, where k is the constant of proportionality. For a mo
Natasha_Volkova [10]

Answer:

Step-by-step explanation:

for this equation

  d=st

we can represent s as d/t

we can represent t as d/s

and in real world we have a lot of this type of equations

some of them are,

 d=m/v  ( density = mass / volume )

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7 0
3 years ago
Juanita is having a party at her house she is inviting 12 people.there will be 3 times as many boys as girls invited. let x repr
Margaret [11]
X + 3x = 12 

(Or 4x=12)

the first x is the number of girls then the second x is the girls times 3, which is how many boys there are.
8 0
3 years ago
12345678910111213141516
Galina-37 [17]

Step-by-step explanation:

oh, come on. you can just use common sense.

a local minimum is a point where the curve goes down to, and then turns around and starts to go up again. that point in the middle, where it turns around and does not go down any further, is the minimum.

for the maximum the same thing applies, just in the other direction (the curve goes up and turns around to go back down again).

a)

the local minimum values (y) are

-2, -1

b)

the values of x where it had these minimum values are

-1, +3

4 0
2 years ago
5. Simplify: 56 = 7 - 3 [4 + {8 - 4 ( 4 + 5 - 3 )}]​
shutvik [7]

Answer:

36

Step-by-step explanation:

56=7-3[4+{8-4(4+5-3)}]

56=7-3[4+{4(4+5-3)}]

56=7-3[4+{16+20-12)}]

56=7-3[4+24]

56=4[28]

56=92

56-56=92-56

36

3 0
3 years ago
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