Answer:
y = 68
A = 44
Step-by-step explanation:
No matter what may be true, that doesn't look like an a to me.
x = y = 68 x and y are opposite equal sides and are therefore =.
68 + 68 + A = 180 all triangles are 180 degrees.
136 + A = 180 Subtract 136 from both sides
A = 180 - 136
A = 44
Mean is the average number. To find mean, add all the numbers and divide by how many numbers there are.

There are 9 numbers. Divide by 9

Question 6 ⇒ C. 84.44
Median is the middle number when ordered from least to greatest. First order the numbers.

The 2 middle numbers are 10 and 11. Add them together and divide by 2

Question 7 ⇒ D. 10.5


Take the derivatives of each to get the tangent vectors:


Take the cross product of the tangent vectors to get a vector that is normal to both lines:

The two given lines intersect when
:

that is, at the point (6, 4, 4).
The line perpendicular to both of the given lines through the origin is obtained by scaling the normal vector found earlier by
; translate this line by adding the vector
to get the line we want,


There are 2.5 grams of niacin contained in the bottle.
First you have to find how many milligrams are in the bottle.
So you multiply 125 by 20 since there are 125 tablets and 20 milligrams in each one.
125*20=2500
So there are 2500 milligrams in the bottle. Then you have to convert it into grams. To do that you divide the mass by 1000.
2500/1000=2.5
So there are 2.5 grams in the bottle.