Answer: Distributive Property of Multiplication.
Step-by-step explanation:
The definition of an angle bisector is a bisector that cuts an angle into two equal halves.
So BD bisects ∠ABC, therefore ∠ABD = ∠DBC
We can set the expressions inside them equal to each other, solve for x, and substitute it into the expressions again to find the total value of the angle.
4x - 15 = 3x + 12
- 3x - 3x
______________
x - 15 = 12
+ 15 + 15
______________
x = 27
So x = 27, we can plug this back into an expression and do the same with the second one and add them, or, because we know they are equal, just multiply two once we find the value of the first one.
4(27) - 15
= 108 - 15
= 93
Multiply 93 by 2.
93 x 2 = 186
Therefore m∠ABC is 186°
Hope this helps! :)
Answer:A sample has a density of 1.37 * 10^5 CFU/mL. Whatsample volume should yield a countable plate? Which two dilutiontube could be used to produce this sample volume? How?
Step-by-step explanation:A sample has a density of 7.9 * 10^9 CFU/mL. What samplevolume should yield a countable plate? Which two dilution tubecould be used to produce this sample volume? How?
Plug each x-value into the equation to get the y-value:
(2,-1)
(0,-2)
Answer:
10,000 + 7,000 + 900 + 20 + 4
Step-by-step explanation:
