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3 years ago

Can someone explain these math questions to me

Mathematics

1 answer:

kolbaska11 [484]3 years ago

4 0

Should be choice 1 x being your slope and y your y- intercept

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Write an expression that represents n plus 7 * 3

Angelina_Jolie [31]

An expression of that statement would look like:

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3 years ago

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Order of operation (-4)(-2)-6(2-5)

Crazy boy [7]

Answer:

Step-by-step explanation:

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3 years ago

Question 101 points)

maw [93]

Answer:

$\large\boxed{y=-\dfrac{2}{3}x+\dfrac{13}{3}}$

Step-by-step explanation:

$\text{The slope-intercept form of an equation of a line:}\\\\y=mx+b\\\\m-slope\\b-y-intercept\\\\\text{The formula of a slope:}\\\\m=\dfrac{y_2-y_1}{x_2-x_1}\\\\===============================$

$\text{We have the point:}\\\\(5,\ 1)\ \text{and}\ (-4,\ 7).\ \text{Substitute:}\\\\m=\dfrac{7-1}{-4-5}=\dfrac{6}{-9}=-\dfrac{6:3}{9:3}=-\dfrac{2}{3}\\\\\text{We have the equation in form:}\\\\y=-\dfrac{2}{3}x+b\\\\\text{Put the coordinates of the point (5, 1) to the equation:}\\\\1=-\dfrac{2}{3}(5)+b\\\\1=-\dfrac{10}{3}+b\qquad\text{add}\ \dfrac{10}{3}\ \text{to the both sides}\\\\\dfrac{3}{3}+\dfrac{10}{3}=b\to b=\dfrac{13}{3}\\\\\text{Finally:}\\\\y=-\dfrac{2}{3}x+\dfrac{13}{3}$

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3 years ago

3x+1+5x=7+15+7x what is x?

LenKa [72]

Answer: x=21

Step-by-step explanation:

To solve for x you must first combine you like terms on each side of the equal sign. So you problem will become 8x+1=22+7x. Then get your x on one side and your numbers on the other by taking the one away from the right side and 1 away from 22. Then take away 7 from the left side to cancel it out. Then take 7x away from 8x to leave you with x. making your answer x=21

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3 years ago

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If sal can fill a case of water at the rate of 223 case/min how many cases can he fill in 35 minutes

charle [14.2K]

Answer:

7805 cases of water

Step-by-step explanation:

just multiply 223 by 35 minutes

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2 years ago