hope this helpos
we will divide both side by 5 then,
Let be the scores of the first 8 quizzes. We know that the average of these scores is 85, so we have
The average of the first 9 scores is 81, and it is given by
But we know that the sum of the first 8 is 680:
And we can solve for the nineth score: multiply both sides by 9:
Subtract 680 from both sides:
The exact value of sin(45) is √22.
Consider △ABC to be right-angled in B and choose ∠BCA such that its measure is 45o. Since the triangle is isosceles, we can deduce that angle ∠CAB is also 45o. Then pick an arbitrary value for AB and BC and apply the Pythagorean theorem. I'll go with the unit triangle, choosing both AB and BC to be 1 (remember, the triangle is isosceles):
The hypothenuse AC can easily be calculated now: AC=√BC2+AB2=√12+12=√2.
The sine is defined as the ratio between the opposed side and the hypothenuse. Therefore, sin45o=1√2=√22.
In decimal form, it is roughly 0.7071067812.
what this guy said above :)
Step-by-step explanation: Given equation .
We need to find it's inverse.
In order to find the inverse, we need to switch x and y's and solve for y.
Step 1: Switching x and y's, we get
Step 2: Solving it for y.
Subtracting from both sides, we get
Taking square root on both sides, we get
Subtracting 3 from both sides, we get
Switching sides, we get
Therefore, correct option is D option .
XV, XT, VT
YV, YU, VU
it is a vector
it is a segment
they are points
it is a line
i am learning this right now and i think that all you would have to do is the number into the "equation" with the negative sin, cos, tan, close the parenthesis then press enter or =
1) is right