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3 years ago

On the graph of the equation 5x - y = 8, the point whose y-coordinate is 7 has an x-coordinates of ?

Mathematics

2 answers:

xxMikexx [17]3 years ago

8 0

Answer: x = 3

Step-by-step explanation:

5x - y = 8

It is given that y = 7, so substitute "y" with "7" into the equation:

5x - (7) = 8 substituted y with 7

5x = 15 added 7 to both sides

x = 3 divided both sides by 5

When y = 7, then x = 3 ⇒ the coordinate is (3, 7)

Lemur [1.5K]3 years ago

3 0

Answer:

x = 3

Step-by-step explanation:

To find the x-coordinate, substitute y = 8 into the equation abd solve for x

5x - 7 = 8 ( add 7 to both sides )

5x = 15 ( divide both sides by 5 )

x = 3

Thus (3, 7) is a solution to the equation

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At Brighton Middle School, Mr. Yule asked 50 randomly selected students from each grade level about their favorite subject, and

Ugo [173]

Answer:

Yes, he made a reasonable inference by saying about 25 percent of students choose the science.

Step-by-step explanation:

Given that

Number of students for survey = 50

Number of students who choose science = 12

Now

Percentage of student who choose science = $\frac{12}{50} x 100$

Percentage of student who choose science = $\frac{12*100}{50}$

Percentage of student who choose science = 24 %

Now as Mr. Yule said "about 25" percent of students choose the science it can be treated as reasonable approximation.

Now if the number of students in survey become 200, then we can expect 12 out of every 50 students would choose the science. So, in total 48 students would choose the science.

Now lets calculate the percentage of students who choose science.

Percentage of student who choose science = $\frac{48}{200} x 100$

Percentage of student who choose science = $\frac{48*100}{200}$

Percentage of student who choose science = 24 %

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3 years ago

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11^2^3x=983298f+0220.2^2(38) whats x.

Mazyrski [523]

Answer:

x=1638831.492383738758729e+23f+0

Step-by-step explanation:

(1123)(x)=983298f+(220.22)(38)

Step 1: Divide both sides by 8.954302432552374e+23.

8.954302432552374e+23x

8.954302432552374e+23

983298f+1842545.52

8.954302432552374e+23

163883

1.492383738758729e+23

f+0

6 0

3 years ago

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Two dice are rolled to determine the sum. What is the probability that the sum on both dice is 7, given that exactly one die tur

RSB [31]

It depends on how many sided die it is

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3x+47y=1094 Solve for y.

padilas [110]

Answer:

$y = \frac{1094-3x}{47}$

General Formulas and Concepts:

Order of Operations: BPEMDAS
Equality Properties

Step-by-step explanation:

Step 1: Define equation

3x + 47y = 1094

Step 2: Solve for y

Subtract 3x on both sides: 47y = 1094 - 3x
Divide both sides by 47: y = (1094 - 3x)/47

8 0

3 years ago

Write an equation for the line that contains the given point and that has the given slope m. (-8, -11) and slope undefined.

trapecia [35]

Answer:

x = -8 or x + 8 = 0

Step-by-step explanation:

As the slope is undefined, the line is parallel to y-axis

The equation of the line : x = -8

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