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kherson [118]
2 years ago
7

Create trig ratios to solve for the variables . ROUND YOUR ANSWER to ONE decimal place.

Mathematics
1 answer:
kobusy [5.1K]2 years ago
4 0

Answer:

\huge\boxed{x=12sin80=11.8}\\\huge\boxed{y=12cos80=2.1}

Step-by-step explanation:

Because sine = opposite over hypotenuse, simply multiply both sides by the hypotenuse to get:

hypotenuse * sinθ = opposite

Do the same thing with cos to get:

hypotenuse * cosθ = adjacent

Hope it helps :) and let me know if you want me to elaborate.

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One gallon is 3.8 litres. How many litres will you need for 675 square ft? Show your work!
vazorg [7]

Answer:

2565 square ft

Step-by-step explanation:

675 x 3.8 = 2565 square feet

6 0
3 years ago
Hhelp me pleaseeeeee
svetlana [45]

A. Area = ½b × h

= ½ × 16 × 9

= 72

B. Area = b × h

= 26 × 18

= 468

C. Area = a²

= 11²

= 121

D. Area = ½(a+b) × h

= ½(6+21) × 8

= 108


Hope this helps :)

Please consider marking my answer the brainliest!

4 0
3 years ago
Write the slope-intercept form of the equation of each line.
gregori [183]

Greetings!

Answer:

2y = x - 6

Step-by-step explanation:

First, we must find the slope of the current equation.

This is the number in front of the x.

Seeing as this is -2x, the slope of this line is -2

When finding the slope of a line perpendicular, you need to find the \frac{-1}{slope}

So, in this case it is:

\frac{-1}{-2}

The negatives cancel out which leave \frac{1}{2}

So the gradient is \frac{1}{2}


Now, to find the equation of a line, you need to use:

y - y1 = m(x - x1)

Where ya and x1 are the values in the coordinates (2 , -2)

So y1  = -2, x1 = 2, and m is a half. Plug these values in:

y - - 2 = \frac{1}{2}(x - 2)

We need to get rid of the half so we multiply the whole equation by 2:

2y - - 4 = (x - 2)

The minus and the negative turn into a positive:

2y + 4 = x - 2

And now simply move the +4 over to the other side, making it a negative:

2y =  -2 - 4 + x

Simplify:

2y = x - 6

<h3>So the equation of the line is 2y = x - 6</h3>
<h2>Hope this helps!</h2>
5 0
3 years ago
What is the percent of decrease from 40 to 24?
dem82 [27]

Answer:

37.5 percent !!

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Which statement must be true?
balandron [24]
I believe that the answer is 2.
5 0
3 years ago
Read 2 more answers
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