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3 years ago

20 - 12/x = 16 ; x = 3

Mathematics

2 answers:

Aloiza [94]3 years ago

6 0

Answer:

20-12 = 8.

If 8 / x = 16, then 3 at x;

8/3 =16.

I hope you will like it.

uranmaximum [27]3 years ago

3 0

Answer: 20−12/3=?16

16=16

True

Step-by-step explanation: hope this help:)

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A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 436.0 gram setting. It

Vilka [71]

Answer:

We conclude that the machine is under filling the bags.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 436.0 gram

Sample mean, $\bar{x}$ = 429.0 grams

Sample size, n = 40

Alpha, α = 0.05

Population standard deviation, σ = 23.0 grams

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 436.0\text{ grams}\\H_A: \mu < 436.0\text{ grams}$

We use one-tailed(left) z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{429 - 436}{\frac{23}{\sqrt{40}} } = -1.92$

Now, $z_{critical} \text{ at 0.05 level of significance } = -1.64$

Since,

$z_{stat} < z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, we conclude that the machine is under filling the bags.

8 0

3 years ago

0.6x + 3 = 0.1x - 7 what value of x makes the question true

svetlana [45]

Answer:x=-20

Step-by-step explanation:

7 0

3 years ago

Use order of operations to simplify

wlad13 [49]

Calculate and multiply to get
-4/(-6)+7 - 2x(-2)/-1x3+7
Next remove parentheses and calculate,
You'll get -4/-6+7 - 2x(-2)/4
Then calculate and reduce,
-4/1 - -2/2
Reduce and divide to get -4-(-1)
Remove parentheses, -4+1
And calculate to get your final answer
= -3

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Step-by-step explanation:

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Answer:

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3 years ago