Answer: option c
Step-by-step explanation:
margin of error = critical value × s/√n
Where s = sample standard deviation = 0.58, n = 53
The critical value = 1.96 ( this is the critical value for a two test test corresponding to a level of significance of 5%)
By substituting the parameters, we have that
Margin of error = 1.96×0.58/√53
Margin of error = 1.96 × 0.0796
Margin of error = 0.156 ~ 0.16
Answer:
4 and 20
Step-by-step explanation:
The sum of two numbers is 24.
One of the numbers is 5 times larger than the other.
Let x be the first number.
Let y be the second number.
x + y = 24
x = 5y
Put x as 5y in the first equation.
5y + y = 24
6y = 24
y = 4
Put y as 4 in the second equation.
x = 5(4)
x = 20
Answer:
180
Step-by-step explanation:
1 foot a minute = 0.0113636364 miles a hour
15840 • 0.0113636364 = 180.000001
So pretty much just round down
Answer:
12
Step-by-step explanation:
1/2x=3/4x−3⇒2x=3x−12⇒x=12
Or you can do the easy way
convert to slope intercept
y=mx+b
m=slope
get 1y all by itself
8x-4y=8
minus 8x both sides
-4y=-8x+8
divide both sides by -4
y=2x-2
y=mx+b
slope is 2
the hack way is
for an equatoin in standard form
ax+by=c
slope=-a/b
slope=2
if you want to graph 2 points and do it the long way, here it is
if x=0, y=-2
if y=0, x=1
(0,-2) and (1,0)
slope=(y2-y1)/(x2-x1)
slope=(0-(-2))/(1-0)=2/1=2
slope is 2
