Answer:
The third choice down
Step-by-step explanation:
Plotting the point (-2, 9) has us in QII. We connect the point to the origin and then drop the altitude to the negative x-axis, creating a right triangle. The side adjacent to the reference angle theta is |-2| and the alltitude (height) is 9. The sin of the angle is found in the side opposite the angle (got it as 9) over the hypotenuse (don't have it). We solve for the hypotenuse using Pythagorean's Theorem:
so
and
Now we can find the sin of theta:
We have to rationalize the denominator now. Multiply the fraction by
Doing that gives us the final
third choice from the top
Let the required number be 'a'.
17 × a℅ = 20.4
17 × a/100 = 204/10
17a/100 = 204/10
17a = (204×100) /10
a = 20400 / 10 × 17
a = 20400 /170
a = 120
The correct answer is She have left $7.5 after buying the coat and skirt.
Step-by-step explanation
This question is incomplete, the complete question is:
Mary had $60 and spent 0.75 o 3/4 of it on a coat. She then bought a skirt with 50% of the money that she had left. How much money did she have left after buying the coat and skirt?
The answer is $7.50
Explanation:
To know how much money Mary has left after buying the coat we have to multiply $60 by 0.75 as this would help us know the price of the coat.
60 x 0.75 = 45 (price of the coat)
Then we have to subtract 45 from 60 to know how much money she have left after buying the coat.
60 -45 = 15 (Money left)
Then she bought a skirt with 50% of the money that she had left. To know how much money costs the skirt we have to multiply 15 by 0.50. The result of this operation is $7.5, and finally, we have to subtract again $7.5 that she spent on her skirt from $15 and the final result is $7.5
Answer:
g
(
5
x
−
2
)
=
x
Step-by-step explanation:
mark brainliest please :)