Answer:
Y = 32.7°
Step-by-step explanation:
We will apply the Cosine law in the given triangle XYZ,
x = 90 ft
y = 55 ft
z = 50 ft
We have to find the measure of angle Y.
y² = x² + z² - 2xzCosY
(55)² = (90)² + (50)² - 2(90)(50)cosY
3025 = 8100 + 2500 - 9000.cosY
9000.cosY = 10600 - 3025
cosY =
= 0.84167
Y =
Y = 32.68 ≈ 32.7°
Therefore, measure of angle Y = 32.7°
Answer:
D.2.58
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
That is z with a pvalue of , so Z = 2.58.
The answer is given by option D.
Solution: The total money did addison have to begin with is $29.
Explanation:
Let the addison begin with money $x.
It is given that the addison earn $25 from his neighbor and $50 from her grandmother. So total money addison has
She loaned her friend %18.
Now she has
It is given that she had $86.
Therefore, the total money did addison have to begin with is $29.