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miss Akunina [59]
3 years ago
13

My daughter needs help with step by step doing this equation

Mathematics
1 answer:
galina1969 [7]3 years ago
5 0
Step 1. Multiply both sides by x+2

3x= \frac{5}{9} (x+2)

Step 2. Simplify \frac{5}{9} (x+2) to \frac{5(x+2)}{9}

3x= \frac{5(x+2)}{9}

Step 3. Multiply both sides by 9

27x=5(x+2)

Step 4. Expand

27x=5x+10

Step 5. Subtract 5x from both sides

27x-5x=10

Step 6. Simplify 27x-5x to 22x

22x=10

Step 7. Divide both sides by 22

x=  \frac{10}{22}

Step 8. Simplify \frac{10}{22} to \frac{5}{11}

x= \frac{5}{11}

Done! :)

Decimal form if needed: <span>0.454545</span>
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A manufacturer of bolts has a​ quality-control policy that requires it to destroy any bolts that are more than 2 standard deviat
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bolts of length more than 13+0.2 , and less than 13-0.2 will be destroyed

= 13.20 cm and 12.80 cm

<u>Step-by-step explanation:</u>

Here we have , A manufacturer of bolts has a​ quality-control policy that requires it to destroy any bolts that are more than 2 standard deviations from the mean. The​ quality-control engineer knows that the bolts coming off the assembly line have mean length of 13 cm with a standard deviation of 0.10 cm. We need to find For what lengths will a bolt be​ destroyed .Let's find out:

A manufacturer of bolts has a quality control policy that requires it destroy any bolts that are more than 2 standard deviations from the mean.

mean length= 13 cm

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2 standard deviation from mean= 13 \pm (2(0.10))

Therefore, bolts of length more than 13+0.2 , and less than 13-0.2 will be destroyed

= 13.20 cm and 12.80 cm

6 0
3 years ago
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