Answer:
See explanation below
Step-by-step explanation:
Since each time after the person gets off the scale, the reading is 2 lb the person's weight must be near the mean of
148-2, 151-2, 150-2, 152-2; that is to say, near the mean of 146, 149, 148, 150 = (146+149+148+150)/4 = 148.25
We could estimate the uncertainty as <em>the standard error SE
</em>
where
<em>s = standard deviation of the sample
</em>
<em>n = 4 sample size.
</em>
Computing s:
So, the uncertainty is 1.479/2 = 0.736
<em>It is not possible to estimate the bias, since it is the difference between the true weight and the mean, but we do not know the true weight.
</em>
Answer:
angle A: most likely 20 degrees
angle B: most likely 100 degrees
explanation:
a full circle is 360 degrees.
the angle on the bottom left-hand corner is most obviously a 90 degree angle.
the angle on the right hand corner labeled “75 degrees” is the same as the angle in the top left hand corner, as they are mirrored. this means:
360-90-75-75=120
there is 120 degrees left for the two values that we are looking for. since B is an obtuse angle, I would say that angle B is most likely 100 degrees and the smaller angle (angle A) would be 20 degrees.
hope this helps you!
xoxo
Answer:
BD = 28
AC = 24
Step-by-step explanation:
Diagonals of a parallelogram bisect each other.
4x − 2 = 3y − 1
3x = 3y − 3
Using elimination to solve the system of equations, subtract the second equation from the first.
(4x − 2) − 3x = (3y − 1) − (3y − 3)
4x − 2 − 3x = 3y − 1 − 3y + 3
x − 2 = 2
x = 4
Substitute into either equation to find y.
3(4) = 3y − 3
12 = 3y − 3
15 = 3y
y = 5
The length of BD is:
4(4) − 2 + 3(5) − 1 = 28
The length of AC is:
3(4) + 3(5) − 3 = 24
Answer:
D.
Step-by-step explanation:
x(x+2) (x-5) -240
put that on a graph calculator and the x=8
x=8
x+2=10
x-5=3
Answer:
-2x^(5)y^(3)
Step-by-step explanation:
