1:45pm and 3:15pm
Start at 1:45 in 15 min is
2:00 in 1 hour is
3:00 in 15 min is
3:15
so in 1 hour and 30 minutes
Answer:
D. All three chose a valid first step toward solving the equation.
Step-by-step explanation:
Aaron, Blaine, and Cruz are solving the equation 4/7 (7 − n) = −1. Aaron started his solution by multiplying both sides of the equation by 7/4 . Blaine started by using the distributive property to multiply 4/7 by both 7 and −n. Cruz started by dividing both sides of the equation by 4/7 .
Which of the following is true?
A. Blaine and Cruz made an error in picking their first steps.
B. Cruz made an error in picking his first step.
C. All three made an error because the right side equals -1.
D. All three chose a valid first step toward solving the equation.
Given:
4/7(7 - n) = -1
Aaron:
4/7(7 - n) = -1
Multiple both sides by 7/4
4/7(7 - n) * 7/4 = -1 * 7/4
7 - n = -7/4
- n = -7/4 - 7
- n = (-7-28)/4
- n = -35/4
n = 35/4
Blaine:
4/7(7 - n) = -1
4/7(7 - n) × 7 = -1 × 7
4(7 - n) = -7
28 - 4n = -7
-4n = -7 - 28
- 4n = - 35
n = -35/-4
n = 35/4
Cruz:
4/7(7 - n) = -1
Divide both sides by 4/7
4/7(7 - n) ÷ 4/7 = -1 ÷ 4/7
4/7(7 - n) × 7/4 = -1 × 7/4
7 - n = -7/4
- n = (-7-28)/4
- n = -35/4
n = 35/4
D. All three chose a valid first step toward solving the equation.
(6 x (7+5)) + 3 = 75
6 x 12 + 3 = 75
72 +3 = 75
I hope this helped you <3
X=65 y=49 z=114 w= 93 t=86
Answer:
Step-by-step explanation:
Given : Giving a test to a group of students, the grades and gender are summarized below
A B C Total
Male 8 10 7 25
Female 6 13 14 33
Total 14 23 21 58
Total students = 58
Total number of students got A = 14
P(students got A)
Total number of students got A and not female = 8
P( students got A and not female ) =
Now , By conditional probability ,
P(NOT a female | got a "A" ) =
∴ The probability that the student was NOT a female that got a "A" is .