Answer:
77.88 minutes
Step-by-step explanation:
Given that :
Mean (m) = 70
Standard deviation (s) = 10
For 80% of student to complete the exam. In the given time
Using the formula :
Zscore = (X - mean) / standard deviation
80th percentile = 80/100 = 0.8 has a Zscore = 0.7881
0.7881 = (X - 70) /10
0.7881 * 10 = X - 70
7.881 = X - 70
7.881 + 70 = X
77.881 = X
Hence, 77.88 minutes should be given
Answer:
.
Step-by-step explanation:
.............................
Answer: Equivalent
<u>Step-by-step explanation:</u>
When given a system of equations, the definitions of the solution are:
- Consistent & Independent: exactly ONE solution (lines intersect)
- Consistent & Dependent: INFINITE solutions (same line)
- Inconsistent: NO solutions (parallel lines)
In the given system, the equations are the same which means they have INFINITE solutions --> The system is Consistent & Dependent = Equivalent.
Answer : 19
Explanation:
P = 7 + BR + QR
But BR = RC = 6
And QR = 1/2 AC (QR is the midsegment of triangle ABC)
QR = 1/2 x 12 = 6
P = 7 + 6 + 6
P = 19
Answer:
The correct answer is 17 weeks.
Step-by-step explanation:
First, write an equation:
total cost = (30)weekly + deposit
Let's solve:
1004.51 = 30w + 500
504.51 = 30w Subtract 500 from both sides
16.817 = w Divide both sides by 30
<u>17 = w</u><u> Round up (money always rounds up)</u>
Hope this helps,
♥<em>A,W,E,</em><u><em>S.W.A.N.</em></u>♥
