A.) the degrees inside the triangles are 50, 70, and 60. you know because 180-120=60
b.) you know that they are similar triangles because they have the same angle degrees.
im not sure if this is correct but i think it is :)
To find the z-score for a weight of 196 oz., use
A table for the cumulative distribution function for the normal distribution (see picture) gives the area 0.9772 BELOW the z-score z = 2. Carl is wondering about the percentage of boxes with weights ABOVE z = 2. The total area under the normal curve is 1, so subtract .9772 from 1.0000.
1.0000 - .9772 = 0.0228, so about 2.3% of the boxes will weigh more than 196 oz.
Step-by-step explanation:
2 · c - 5 · 2 - 3 = 2c - 10 - 3
2c - 10 - 3 = 2c - 7
Answer:
Step-by-step explanation:
Because we are told equivalent expressions for y and z we can plug those in to 2(y+z).
Then simplify by combining like terms of the expressions. Values ending in x^2 can be combined with each other.
Now we can distribute the 2 by multiplying each value in the parentheses by 2.
