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Alja [10]
3 years ago
15

18. Solve the inequality. Show your work. –6b > 42 or 4b > –4

Mathematics
2 answers:
grigory [225]3 years ago
6 0
-6b > 42 = b<-7
or
4b > -4 = b>-1
Hope this helps.
zhenek [66]3 years ago
4 0

Answer:

Divide each term by -6 and then simplify.    b < -6

divide each term by 2 and then simplify    b > -2

then graph the solution                              b < -6 and b > -2

Step-by-step explanation:


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8.23 A manufacturing company produces electric insulators. You define the variable of interest as the strength of the insulators
Kitty [74]

Answer:

The 95% confidence interval estimate for the population mean force is (1691, 1755).

Step-by-step explanation:

According to the Central Limit Theorem if we have an unknown population with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from the population with replacement, then the distribution of the sample mean will be approximately normally.

The sample selected here is <em>n</em> = 30.

Thus, the sampling distribution of the sample mean will be normal.

Compute the sample mean and standard deviation as follows:

\bar x=\frac{1}{n}\sum x=\frac{1}{30}\times 51702=1723.4\\\\s=\sqrt{\frac{1}{n-1}\sum (x-\bar x)^{2}}=\sqrt{\frac{1}{30-1}\times 232561.2}=89.55

Construct a 95% confidence interval estimate for the population mean force as follows:

CI=\bar x\pm z_{\alpha /2}\times\frac{s}{\sqrt{n}}

    =1723.4\pm 1.96\times\frac{89.55}{\sqrt{30}}\\\\=1723.4\pm 32.045\\\\=(1691.355, 1755.445)\\\\\approx (1691, 1755)

Thus, the 95% confidence interval estimate for the population mean force is (1691, 1755).

3 0
3 years ago
Which number is greater 0.45 0r 0.449
kati45 [8]
0.45 I PROmise !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
6 0
3 years ago
Read 2 more answers
Just to ensure I'm doing this method right, (for clarification)
EleoNora [17]
You are right i tried it and i got it right
4 0
3 years ago
When Bunny and Walter came home from practice, there was a note from their mother sitting on top of a pizza box. “Had to run to
leva [86]

9514 1404 393

Answer:

  3/8 pizza

Step-by-step explanation:

If 1/4 of the 4/4 of the pizza was gone, 3/4 remained. When that is split in half, each half is (3/4)(1/2) = 3/8 of the pizza.

Each gets 3/8 of the pizza.

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3 years ago
An online furniture store sells chairs for $100
Sati [7]

Answer:

13 3/4

Step-by-step explanation:

8 0
3 years ago
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