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galben [10]
3 years ago
15

How can i simplify 8/9

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
8 0

Answer: 8/9

Step-by-step explanation:

8/9 cannot be simplified. It's already in simplest form. if you want to turn it into decimal the answer will be .8 (bar notation above 8)

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Sahak pays 11% sales tax on a trumpet that costs 750 dollars. How much does the sales tax add to the purchase price? Answer Choi
777dan777 [17]

Answer:

82.5

Step-by-step explanation:

750 x .11= 82.5

4 0
3 years ago
Leslie tunes a guitar with 6 strings and a piano with 37 times as many strings.
Nataly [62]
B 37*6 = 222.
Multiply 6*7 = 42
Multiply 3*6 =18 + 4 = 22

37
*6
222

5 0
3 years ago
Can someone help me with these 2 questions please???
kodGreya [7K]

Answer:

See step-by-step explanation.

Step-by-step explanation:

For the first question, you simply put an EMPTY circle above 2 and draw an arrow from it all the way down to -3. The reason why we put an empty circle is because there is no equal sign below it.

For the second question, you put a FILLED circle above 4 and draw an arrow from it all the way down to -3. The reason why we use a filled circle is because x is less than OR equal to 4.

6 0
3 years ago
Lazurus Steel Corporation produces iron rods that are supposed to be 36 inches long. The machine that makes these rods does not
Igoryamba

Answer:

Step-by-step explanation:

We would construct a confidence interval.

Confidence interval is written in the form,

(Sample mean - margin of error, sample mean + margin of error)

The sample mean, x is the point estimate for the population mean.

Since the sample size is large and the population standard deviation is known, we would use the following formula and determine the z score from the normal distribution table.

Margin of error = z × σ/√n

Where

σ = population standard Deviation

n = number of samples

From the information given

x = 36.02 inches

σ = 0.1 inches

n = 40

To determine the z score, we subtract the confidence level from 100% to get α

α = 1 - 0.99 = 0.01

α/2 = 0.01/2 = 0.005

This is the area in each tail. Since we want the area in the middle, it becomes

1 - 0.005 = 0.995

The z score corresponding to the area on the z table is 2.58. Thus, confidence level of 99% is 2.58

Margin of error = 2.58 × 0.1/√40 = 0.041

Confidence interval = 36.02 ± 0.041

The lower end of the confidence interval is

36.02 - 0.041 = 35.979 inches

The upper end of the confidence interval is

36.02 - 0.041 = 36.061 inches

Since 36.061 > 36.05, then we would conclude that the machine needs an adjustment.

The formula used is

Confidence interval =

Sample mean ± z × σ/√n

7 0
3 years ago
Pls help me figure this out
hodyreva [135]

Answer:

C. \frac{27}{225}=\frac{b}{100}

Step-by-step explanation:

To find the number of black ribbons one would have subtract the amount of red ribbons from the total number of ribbons. Then one would have to express it as a proportion. Part over whole equals percent over 100. The number of black ribbons over total ribbons equals "b" over 100.

8 0
3 years ago
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