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2 years ago

Y=3x+5 when x=10 what is the value of y

Mathematics

2 answers:

LiRa [457]2 years ago

4 0

Answer:

Y = 35.

Step-by-step explanation:

Okay so we have the equation Y = 3x + 5. Let's make this simpler and make x into 10, now we have Y = (3x10) + 5 = Y = 30 + 5.

All we need to do now is do a reverse equation. 30 + 5 = Y. Well, 30 + 5 = 35 so there's your answer. Y = 35.

Hope that helps. x

Strike441 [17]2 years ago

3 0

Answer:

y = 35

Step-by-step explanation:

y = 3*(10) + 5

y = 30 + 5

y = 35

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35% of a number is 17. Work out the number.

Ksivusya [100]

Well first you would set up your ratio, 17/x = 35/100. You are trying to find x. To do so you cross multiply and divide. So first you have 17× 100 which equals 1700. The you divide that number by 35 which is around 48 like you said. I usually just round to the hundredths place so just cut it at 48.57 but to be safe say approximately 48.57

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3 years ago

Find the y-intercept of a line parallel to 8x – 2y = 12 and passes through the point (5, 3).

Dmitry_Shevchenko [17]

Answer:

-17

Step-by-step explanation:

8x -2y= 12

Divide the whole equation by 2:

4x -y= 6

Rewrite the equation into the slope-intercept form (y=mx+c, where m is the gradient while c is the y-intercept).

-y= -4x +6

y= 4x -6

Thus, gradient of given line= 4.

Since parallel lines have the same gradient, gradient of line= 4.

y= 4x +c

To find the y-intercept of the lone, substitute a pair of coordinates.

When x=5, y=3,

3= 4(5) +c

3= 20 +c

c= 3 -20

c= -17

Thus, the y-intercept of the line is -17.

7 0

3 years ago

If x has a mean of 17.2 g and a standard division of 14.0 g and y has a mean of 23.5 g and a standard division of 16.4 g and the

dimulka [17.4K]

The least squares regression line is y=0.6831x+11.25

Step-by-step explanation:

LSRL is the the Least Squares Regression Line.The formula for regression line is y=mx+b where m is the slope of the line and b is the y-intercept value of the line.

First find the slope, m of the line from the means and standard deviations given

x has a mean of 17.2 g and a standard deviation of 14.0 g

y has a mean of 23.5 g and a standard deviation of 16.4 g

The correlation coefficient in both cases is 0.83, hence the slope m is given by;

m=r(Sy/Sx) where m is the slope of the line, Sy is standard deviation of y values, Sx is standard deviation of x values and r is the correction coefficient.

m= 0.5 * 23.5/17.2 =0.6831

Find the value of b, the y-intercept

b=Y-mX where X and Y are the mean values for x and y respectively

b=23.5-0.6831*17.2

b=23.5-11.75=11.25

The LSRL is y=0.6831x+11.25

Learn More

Least Squares regression Line : brainly.com/question/4090838

Keyword : standard deviation, least square regression line

#LearnwithBrainly

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3 years ago

The price of a gallon of heating oil rose from 1.60 a gallon to 1.92 . by what percent did the price increase?

AURORKA [14]

Answer:

20%

Step-by-step explanation:

1.92 - 1.60 = 0.32

percentage increase = (0.32/1.60) * 100 =

0.2 * 100 = 20%

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3 years ago

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jolli1 [7]

Combine like terms.

2x + 6 + 6x - 1

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3 years ago

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