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Sliva [168]
2 years ago
13

How do you simplify 3(j-2k)+4 ?​

Mathematics
1 answer:
masha68 [24]2 years ago
5 0

Answer: 3j-6k+4

Step-by-step explanation:

First you have to distribute the 3 to the j and the -2k since they are both in the parentheses. So it would look like (3*j) +(-2k*3)+4 and if you simplify that it is 3j-2k+4. After that there are no like terms so that is your answer.

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What is the domain of the cubic function -(2x+3)^3 -1
Mazyrski [523]

Answer:

(-infinite,+infinite)

7 0
3 years ago
In a quality control test of parts manufactured at Dabco Corporation, an engineer sampled parts produced on the first, second, a
sammy [17]

Answer:

p value = 0.0174

Conclusion : we reject the null hypothesis

Step-by-step explanation:

Thinking step:

We need to perform a test to determine if the proportion of the good parts is the same for all three shifts at a significance level of \alpha = 0.05

Assumption : all the population for each or the three shifts is not equal.

Calculation:

Let p₁ be the sample of the first shift

     p₂ be the sample of the second shift

     p₃ be the sample of the third shift

According to the null hypothesis

H₀ = p₁ = p₂ = p₃

In other words, all the population sample proportions are equal.

Alternatively, we can assume that the three shift are not equal p₁ ≠ p₂ ≠ p₃

Tabulating and performing the \chi² test gives 8.10

degrees of freedom:

df = k - 1

   = 3 - 1 = 2

Thus the degree of freedom is 2

Solving using the MINITAB software gives: p = 0.174

The solution shows that the p value < level of significance, then p-value lies in the range 0.0174≤\alpha≤0.05

Therefore, we reject the null hypothesis based on the fact that the three shifts are not equal.

5 0
3 years ago
A group of 22 students participated in a race. Their scores are below: Score (points) 4–5 6–7 8–9 10–11 12–13 Number of Students
Anna71 [15]
A histogram would best represent the data.
Dot plot is a good way to show a certain trend. However, when it comes to the number of a item, in this case the number of students in a certain score range, a histogram will be the most intuitive and concise. Thus, a histogram best represent the data presented here.
6 0
3 years ago
How many 14 inch cubes does it take to fill a box with width 314 inches, length 234 inches, and height 114 inches?
Nesterboy [21]

Answer:

Step-by-step explanation:

First you need to find the area then divide that by 14

3 0
3 years ago
Andre earns $165 for each digital projector that she sells if she works five days a week for 11 hours each day and sales 12 digi
aksik [14]
(165*12)/5*11 = AHW (average hourly wage)

1980/55 = AHW

36 = AHW

$36 is her average hourly wage.
8 0
3 years ago
Read 2 more answers
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