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3 years ago

Solve 4(3x-8) + 20 = 10(x+2)

Mathematics

2 answers:

vesna_86 [32]3 years ago

6 0

4(3x-8) + 20 = 10(x+2)

$12x-32+20=10x+20\\\\2x=32\\x=16$

Stells [14]3 years ago

5 0

Answer:

x=7 is the answer

Step-by-step explanation:

Tell me if not :) :)

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Write the reciprocal of<br> a) 7/10<br> b)3.5

Thepotemich [5.8K]

Answer:

$\frac{10}{7}$

$\frac{10}{35}$

Step-by-step explanation:

The reciprocal of a number is the inverse of the number

$\frac{7}{10} = \frac{10}{7} (reciprocal)$

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2 years ago

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

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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

What is 2 times 1/78 equal to

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3 years ago

after 6 weeks a corn plant is 2 ft tall after 9 weeks the plant is 8 ft tall write an equation that represents the height Y in f

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Answer:

The equation would be y = 2x - 4

Step-by-step explanation:

In order to find the equation of the line, we first can express the two sets of data as an ordered pair. The two ordered pairs would be (6, 2) and (9, 8). Now that we have these, we can use the slope formula to find the slope.

m (slope) = (y2 - y1)/(x2 - x1)

m = (8 - 2)/(9 - 6)

m = 6/3

m = 2

Now that we have the slope, we can use either point and point slope form to get the equation.

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3 years ago

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4 years ago

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