Let n = the unknown number.
The phrase "five is" tells us to start the equation with "5 ="
"Seven more than" becomes "7 +"
"The product of two and a number" is 2n or (2 * n)
Put it all together and solve:
5 = 7 + 2n
5 = 7 + 2n
5 - 7 = 2n
- 2 = 2n
Divide each side by 2 to isolate the variable
- 1 = n
Your number is - 1
B is an Obtuse angle! and I’m 100% sure!
The proportion in the tail with regards to the z scores will be:
- z = 1.00 = 0.1587
- z = 0.50 = 0.3085
- z = -1.25 = 0.1056
- z = -0.40 = 0.3446
<h3>How to calculate the values?</h3>
a. z= 1.00
P(z > 1.00) = 1 - P(Z < 1.00)
= 1 - 0.8413
= 0.1587
The tail will be on the right side.
The proportion of the tail will be 0.1587.
b. z = 0.50
P(z > 0.50) = 1 - P(Z < 0.50)
= 1 - 0.6915
= 0.3085
The tail will be on the right side.
The proportion of the tail will be 0.3085
c. z= -1.25
P(z < -1.25)
= 0.1056
The tail will be on the left side.
The proportion of the tail will be 0.1056.
d. z= -0.40
P(z < -0.40)
= 0.3446
The tail will be on the left side.
The proportion of the tail will be 0.3446.
Learn more about z scores on:
brainly.com/question/25638875
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This is what I think:
#1: 800 - 50 = 750
#2: 800 divided by 2 = 400 - 50 = $350
Answer:
b
Step-by-step explanation:
