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3 years ago

Jeanne needs to buy shirts to look good when she

Mathematics

1 answer:

12345 [234]3 years ago

4 0

5x+7.50=55

x is 9.5

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A line has a slope of -2 and passes through the point (3, 1). What is the equation of this line in slope-intercept form?

Zepler [3.9K]

Question 7. y = -2x + 7. y = mx + b; m= slope (-2) (3, 1) resolve for y. you have : 1= -2 (3) + b; 1 = -6 + b; 1 + 6 = b; b = 7.

6 0

3 years ago

Write an equation in a point-slope form that passes through the given point with the given slope (3, 5), m = -4 and-1, 8), m = ½

4vir4ik [10]

Answer:

$\large\boxed{y-5=-4(x-3)}\\\boxed{y-8=\dfrac{1}{2}(x+1)}$

Step-by-step explanation:

The point-slope form of an equation of a line:

$y-y_1=m(x-x_1)$

m - slope

$m=-4,\ (3,\ 5)\\\\y-5=-4(x-3)$

$m=\dfrac{1}{2},\ (-1,\ 8)\\\\y-8=\dfrac{1}{2}(x-(-1))\\\\y-8=\dfrac{1}{2}(x+1)$

8 0

3 years ago

How do I solve this equation?

Alenkinab [10]

Answer:

Step-by-step explanation:

This is an inequality, not an equation. There will be a set of x-values for which the inequality will be true.

First eliminate the fractional coefficient 2/5 by multiplying all terms by 5:

25 < 2x + 15 ≤ 75

Subtracting 15 from each 5, (2/5)x, 3 and 15 yields:

22 < 2x ≤ 60

Dividing all three terms by 2, we get:

11 < x ≤ 30

Thus, any number greater than 11 but equal to or less than 30 is a solution.

7 0

3 years ago

Simplify the expression. Please help, really stuck!!

andrew11 [14]

(-2y + 5 ) ( y+3)
= -2y^2 -6y +5y +15
= -2y^2 - y +15
the answer is B

3 0

4 years ago

Which ordered pairs is a solution to 5x+3y>12 Question 2 options: (3, 9) (-5, 5) (3, -6) (-2, -5) (2, 8) (-6, 0)

jek_recluse [69]

The solution to the expression given as 5x + 3y > 12 has the ordered pair of (3, 0)

<h3>How to determine the ordered pair of the solution?</h3>

From the question, we have the following inequality that can be used in our computation:

5x + 3y > 12

Solving further, we need to collect the like terms

So, the expression becomes

3y > 12 - 5x

Next, we divide through the inequality by 3

So, we have the following representation

y > 12/3 - 5/3x

Evaluate

The equation becomes

y > 4 - 5/3x

At this point, we assume any value for x and then solve for y

Assume that the value of x is 3

So, we have the following representation

y > 4 - 5/3 * 3

Evaluate the products

y > -1

A value greater than -1 is 0

So, we have

x = 3 and y = 0

Express as ordered pairs

(x, y) = (3, 0)

Hence, the ordered pair of the solution is (3, 0)