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3 years ago

Which expression is equivalent to 12x + 18y + 54?

Mathematics

1 answer:

Lera25 [3.4K]3 years ago

5 0

I had a question just like this I put 12x plus 18y plus 53 plus 1 and it worked

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How do turn a decimal to a fraction

Ivanshal [37]

If the decimal is in the tenths then the denominator would be like 10. Ex: Decimal: 0.2 Fraction- 2/10. and the same with hundredths, thousandths, etc.

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2 years ago

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What is the domain and range of the equation y = -(x - 3)2 + 9

vekshin1

Answer:y=9

Step-by-step explanation:

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3 years ago

In 4 hours, an experienced cook prepares enough pies to supply a local restaurant's daily order. Another cook prepares the sam

vodka [1.7K]

Answer:

$9\frac{1}{3}hours$

Step-by-step explanation:

Let third cook take x hours to prepare the same number of pies y alone

Let y be the number of pies

In 1 hour ,third cook prepare pies= $\frac{y}{x}$

One experienced cook takes time to prepare enough pies =4 hours

In 1 hour , cook prepare pies= $\frac{y}{4}$

Another cook takes time to prepare same number of pies =7 hours

In 1 hour , another cook prepare pies= $\frac{y}{7}$

All three cooks take time to prepare the same number of pies=2 hours

In 1 hour,all three cooks prepare pies= $\frac{y}{2}$

According to question

$\frac{y}{4}+\frac{y}{7}+\frac{y}{x}=\frac{y}{2}$

$y(\frac{1}{4}+\frac{1}{7}+\frac{1}{x})=\frac{y}{2}$

$\frac{1}{4}+\frac{1}{7}+\frac{1}{x}=\frac{1}{2}$

$\frac{1}{x}=\frac{1}{2}-\frac{1}{4}-\frac{1}{7}$

$\frac{1}{x}=\frac{14-7-4}{28}=\frac{3}{28}$

$x=\frac{28}{3}=9\frac{1}{3}$ hours

Hence, the third cook takes time to prepare the same number of pies alone= $9\frac{1}{3}hours$

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3 years ago

Sonal went to school for 219 days in a full year. if her attendance is 75 percent find the number of days on which the school wa

Charra [1.4K]

Sonal went to school for 219 days in a full year. if her attendance is 75 percent find the number of days on which the school was open

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3 years ago

David works in a department store selling clothing. He makes a guaranteed salary of $250 per week, but is paid a commision on to

MAXImum [283]

Answer:

250 + 0.05 (1500)

250 + 75 = $325 david made i a week with 1500 in sales

250 + 0.05(xx) is how much david would make if he sold xx that week

Step-by-step explanation:

i hope this helped :)

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2 years ago

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