4>-3
-2>-5
1=1
They want to make sure you understand inequalities and know how to use the inequality signs.
Answer: 1. -7 -8 multiplied by -7 equals 56
Step-by-step explanation:
Answer:
38
Step-by-step explanation:
Make a chart
20 = 4850
? = 9215
9215 / 4850 = 1.9
20 x 1.9 = 38
I don't know it this is right but I hope it helps
The z-score for the point x = 22.5 is: z = (x - m) / s = (22.5 - 20) / 2.5 = 1. The probability that z > 1, determined from z-tables, is p (z > 1) = 0.1587. If 13.59% of people score higher than the friend, but not higher than you, this means that only 0.1587 - 0.1359 = 0.0228 of people scored higher than you. Checking the z-table for the z-score for which p (z > z_cutoff) = 0.0228, z_cutoff = 2. Therefore this z_cutoff of 2 corresponds to x = m + zs = 20 + 2(2.5) = 25, which would be your score on the test.
Answer:
b=18
a=6√18
Step-by-step explanation:
tan 45=b/18
by cross multiply
b=tan 45×18
=1×18
=18
find (a) by using pythagora's theorem
a^2=18^2+18^2
=324+324
a^2=648
take square root both sides
√a^2=√648
a=√36×18
a=6√18