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Westkost [7]
3 years ago
7

PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!! I NEED TO FINISH THESE QUESTIONS BEFORE MIDNIGHT TONIGHT.

Mathematics
2 answers:
Westkost [7]3 years ago
7 0

Answer:

The answer to your question is QS = 5

Step-by-step explanation:

Data

hypotenuse = RQ = 8

angle = 39°

Opposite side = QS = ?

To solve this problem use trigonometric functions. The trigonometric function that relates the opposite side to hypotenuse is sine.

               sin α = \frac{opposite side}{hypotenuse}

Solve for opposite side

               Opposite side = hypotenuse x sin α

Substitution

               Opposite side = 8 sin 39

Simplification

                Opposite side = 8(0.63)

Result

                Opposite side = 5.0

Levart [38]3 years ago
6 0

Answer: QS= 4.93

Step-by-step explanation: because they’re asking you to find QS which is opposite to your angle 39and we have the hypotenuse so we can use sine(39)=x/8.

Sin(39)=x/8

Multiply eight both side

8(sin(39))=x

4.93=x

X=4.93

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On a coordinate plane, a parabola opens up in quadrant 1. It goes through (2, 12), has a vertex at (5, 3), and goes through (8,
ruslelena [56]

Answer:

Step-by-step explanation:

You have a vertex coordinate and 2 points. In order to write the equation for that parabola, you only need the vertex and one point. We will fill in the following work form of the parabola:

y=a(x-h)^2+k , where h and k are from the vertex and x and y are from the point. Filling in:

12=a(8-5)^2+3 and

12=a(3)^2+3 and

12=9a+3 and

9 = 9a s0

a = 1.

Now we can write the equation, filling in a, the only unknown we had, which we now know is 1:

y=1(x-5)^2+3

3 0
3 years ago
a construction worker has a ladder against the side of a building. the building is 10 feet tall, and the ladder is 15 feet long.
AveGali [126]

Answer:

5

Step-by-step explanation:

4 0
3 years ago
Which of the following equations is equivalent to 7y+6=36, but written only in terms of x?
hodyreva [135]

Answer:

14x + 7 = 30

Step-by-step explanation:

Given

7y + 6 = 36 and y = 2x + 1

substitute y = 2x + 1 into 7y + 6 = 36 , that is

7(2x + 1) + 6 = 36 ( subtract 6 from both sides )

7(2x + 1) = 30 ← distribute parenthesis on left side by 7

14x + 7 = 30

6 0
2 years ago
Use the zero product property to find the solitions to the equation(x+2)(x+3)=12.
kykrilka [37]

Answer:

(x + 2) (x + 3) = x² + 3x + 2x + 6 = 12  (multiply the binomials)

(x + 2) (x + 3) = x² + 5x + 6 = 12

(x + 2) (x + 3) = x² + 5x + 6-12 = 0  (add the like term and bring the positive 12 to the other side which makes it negative)

x² + 5x + 6 = 0

Using the snowflake method -  (finding the factors of 6 that adds/subtracts to give you 5).  

This method will give you the factors (x + 6)(x - 1)

ZERO PROPERTY RULE:

(x + 6) = 0

x = -6

(x - 1) = 0

x = 1

The two solutions to the equation are -6 and 1.

7 0
3 years ago
Sin^2(alpha) + cos^2(alpha)=? Fast plz sir is asking me rn lol
Crazy boy [7]

Answer:

the answer is 1

hope it helps

4 0
4 years ago
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