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Leviafan [203]
4 years ago
13

Please please help me out!!!!!!!!!

Mathematics
2 answers:
anyanavicka [17]4 years ago
8 0

Answer:

y = \frac{3}{4} x + \frac{1}{4}

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 3, - 2) and (x₂, y₂ ) = (5, 4) ← 2 points on the line

m = \frac{4+2}{5+3} = \frac{6}{8} = \frac{3}{4}, thus

y = \frac{3}{4} x + c ← is the partial equation of the line

To find c substitute either of the 2 points into the partial equation

Using (5, 4), then

4 = \frac{15}{4} + c ⇒ c = 4 - \frac{15}{4} = \frac{1}{4}

y = \frac{3}{4} x + \frac{1}{4} ← equation of line

Black_prince [1.1K]4 years ago
3 0

Answer:

y = 3/4x + 1/4.

Step-by-step explanation:

The upper dot on the line is the point (5, 4) and the lower one is the point (-3,-2) so the slope of the line is:

(4 - -2) / (5 - -3)

= 6/8

= 3/4.

Using the point slope form of a line with m = 3/4 and (x1,y1) = (5,4)

y - y1 = m(x - x1)

y - 4 = 3/4(x - 5)

y = 3/4x + 1/4

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Black_prince [1.1K]

Answer:

x = 8 and line BC = 30

Step-by-step explanation:

that is the solution above

8 0
2 years ago
A: 5x − 2y = 10
Nuetrik [128]

Answer:

D) Multiply A by -4 and B by 5

Step-by-step explanation:

5x-2y=10

4x+3y=7

----------------

-4(5x-2y)=-4(10)

5(4x+3y)=5(7)

----------------------

-20x+8y=-40

20x+15y=35

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23y=-5

y=-5/23

5x-2(-5/23)=10

5x+10/23=10

5x=10-10/23

5x=230/23-10/23

5x=220/23

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x=(220/23)(1/5)

x=220/115

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7 0
4 years ago
Please help me!
dimaraw [331]

Using the profit concept, we have that:

  • The expression is: P(x) = -0.5x² + 40x - 300.
  • A profit of $300 is found with x = 20 and x = 60.

<h3>What is the profit concept?</h3>

Profit is given by <u>revenue subtracted by costs</u>.

In this problem, we have that:

  • The revenue is: R(x) = 90x - 0.5x².
  • The costs are: C(x) = 50x + 300.

Hence the expression for the profit is given as follows:

P(x) = R(x) - C(x)

P(x) = 90x - 0.5x² - 50x - 300

P(x) = -0.5x² + 40x - 300.

A profit of $300 is found when P(x) = 300, hence:

300 = -0.5x² + 40x - 300

0.5x² - 40x + 600 = 0.

x² - 80x + 1200 = 0.

(x - 60)(x - 20) = 0.

Hence the values are:

  • x - 60 = 0 -> x = 60.
  • x - 20 = 0 -> x = 20.

More can be learned about the profit concept at brainly.com/question/4001746

#SPJ1

3 0
2 years ago
Six staff members carved pumpkins for a school contest. The carved pumpkins were auctioned at the event and in total, they raise
atroni [7]

Answer:

Dr. Tracy - $35

Ms. Scelfo - $35

Mr. Hartshorn - $35

Mr. Nelson - $25

Mrs. Ennis - $25

Mr. Pizzica - $25

Step-by-step explanation:

6 0
3 years ago
-5(k + 4) &gt; 2 - (3k + 6)
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