Answer:
hmm u hope u get a 100
Step-by-step explanation:
Answer: first option.
Step-by-step explanation:
Given the right triangle shown in the figure, to calculate the measure of the angle m∠C, you can use the inverse function of the cosine:
![\alpha=arccos(\frac{adjacent}{hypotenuse})](https://tex.z-dn.net/?f=%5Calpha%3Darccos%28%5Cfrac%7Badjacent%7D%7Bhypotenuse%7D%29)
You can identify in the figure, that, for the angle ∠C:
![\alpha=\angle C\\adjacent=7\\hypotenuse=15](https://tex.z-dn.net/?f=%5Calpha%3D%5Cangle%20C%5C%5Cadjacent%3D7%5C%5Chypotenuse%3D15)
Then, since you know the lenght of the adjacent side and the lenght of the hypotenuse, you can substitute these values into
.
Therefore, the measure of the angle ∠C is:
For a system of equations such as this, add both of the equations together. The d values will cancel each other out, making 2e=-4. This means that e=-2. If you plug this into one of the equations, you will have d + (-2) = 1. Isolate the variable by adding -2 to both sides: d=3. Written in the format described above (d,e), your answer is (3, -2).
Answer:
10
Step-by-step explanation:
P(getting blue marbles) = 7/9
so;
x/45 = 7/9
x = 35
so the number of blue marbles is 35
45 - 35 = 10 red marbles
hope it helps .
all the best