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solmaris [256]
3 years ago
5

3x + 1/5y = 7 Please help me

Mathematics
2 answers:
Nostrana [21]3 years ago
8 0

Answer:

3x + 1/5y = 7

1/5y = 7 - 3x

y = 5 (7 - 3x)

y = 35 - 15x

Step-by-step explanation:

kvv77 [185]3 years ago
3 0

Answer:

y = -15x + 35.

Step-by-step explanation:

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Dr. Hoover, a pediatrician, has 3 annual checkups and 2 sick visits scheduled next Tuesday,
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Dr. Hoover allot his time on Tuesday for an annual checkup is 147 minutes and for a sick  visit is 42 minutes ​(Total 189 minutes)

On Wednesday appointment,  he allot his time for an annual checkup is 147 minutes and for a sick  visit is 21  minutes ​ (Total 168 minutes)

solution

Let us assume, minutes for annual checkup denoted as x and

minutes for sick visit denoted as y

The equation of Tuesday visit is       3x + 2y = 189 minutes ------ 1

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by changing the signs of the equation 2  and  subtract it from the equation 1 we will get   1y = 21 minutes

to substitute y =1 in the equation 2 we get

3x + 2(21) = 189

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x = 147 ÷ 3 = 49 minutes

then now we have substitute both x = 49 and y= 21 in equation ----- 2

we will prove that 3x + 2y = 189  = 3 (49) + 2(21) = 189 147+ 42 = 189 minutes

so the Tuesday appointment , the time allotted for an annual checkup is 147 minutes and for a sick  visit is 42 minutes ​(Total 189 minutes)

On Wednesday appointment,  the time allotted for an annual checkup is 147 minutes and for a sick  visit is 21  minutes ​ (Total 168 minutes)

         

6 0
3 years ago
Devon wants to write an equation for a line that passes through 2 of the data points he has collected. The points are (8, 5) and
melamori03 [73]
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So.... <span>y=(<span>7/10)</span>x −<span>35

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<span>10y=7x−6</span><span> --> -7x + 10y = -6
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Step-by-step explanation:

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