Answer:
-18
Step-by-step explanation:
You can basically just drop the plus sign and remove the parenthesis because the plus sign doesn't alter negatives.
-6+(-12)
-6-12= -18
Answer:
a) 675 b) 1050 c) 675 d)455 e) 120
Step-by-step explanation:
From the given problem the same size is n = 70. Df = n – 1 =
70 – 1 = 69.
The population mean is u = 30, sample standard deviation is
s = 10 and the sample size is n = 70. Then,
t = x – u / s sqrt of n
1.995 = x – 30 / (10 sqrt of 70)
1.995 = x – 30 / 1.1952
X – 30 = 1.995 (1.1952)
X – 30 = 2.3844
X = 30 + 2.3844
X = 32.3844
The sample mean is 32.3844
<span> </span>
180 > 2(26) + 2h
<span>180 > 52 + 2h </span>
<span>128 > 2h </span>
<span>64 > h </span>
<span>height must be less than 64 inches</span>
