A three-dimensional printing pen uses heated plastic to create three-dimensional objects. A kit comes with one 3D-printing pen a
1 answer:
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Answer:
The correct option is;
d. 24.2 to 25.6
Step-by-step explanation:
Here we have a sample with unknown population standard deviation, we therefore apply the student t distribution at 64 - 1 degrees of freedom
Therefore, we have
Where:
= Mean = 25
σ = Standard deviation = 2
n = Sample size = 64
t = T value at 98% =
Which gives
That is the value is from
24.40325 to 25.59675 which gives,by rounding to one decimal place, is
24.4 to 25.6.
Answer:
<em>Question 1) </em>
The graph of is attached to the answer.
The graph of such a functio lies in first and third quandrant such that the graph tends to 0 when x→∞ or when x→-∞ and graph tends to ∞ when x→0.
We can also show the values of this equation on a table:
<u> x-values</u> <u> y-values</u>
1/2 4
1 2
2 1
3 2/3
<em>Question 2)</em>
The graph of the equation is attached to the answer.
we will get a upward parabola with this equation whose vetex is: (-1,-4).
The ordered pair on the graph could be shown with the help of a table:
<u>x-values</u> <u> y-values</u>
-1 -4
0 -3
-3 0
1 0
Answer:
first option
Step-by-step explanation:
The equation representing a proportional relationship is
y = kx ← k is the constant of proportion
Here k = 0.7, thus
y = 0.7x ← is the required equation
Given
=
( cross- multiply )
10y = 7x ( divide both sides by 10 )
y = x = 0.7 x ← the required equation
Answer:
Step-by-step explanation:
<u>Given:</u>
- Volume of fuel = 5/6
- Volume of fuel used each time = 1/12
- Number of travels to or from work = x
<u>Since each time 1/12 of the tank is used, and initial volume is 5/6 of the tank, the equation will be:</u>
<u>Solving the equation we get:</u>
- x =
÷
- x =
- x = 10
So Felitz can travel 10 times to/from work with 5/6 full tank