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Dvinal [7]
3 years ago
9

Solve for 45 points and explain well

Mathematics
1 answer:
Delicious77 [7]3 years ago
5 0

Answer:

<h2>y = -x + 6</h2>

Step-by-step explanation:

\text{The intercept form of an equation of a line:}\\\\\dfrac{x}{a}+\dfrac{y}{b}=1\\\\a-x\ intercept\\b-y\ intercept\\\\\text{We have:}\\\\point\ (2,\ 4)\to x=2,\ y=4\\a=c\\b=c\\\\\text{Substitute:}\\\\\dfrac{2}{c}+\dfrac{4}{c}=1\\\\\dfrac{2+4}{c}=1\\\\\dfrac{6}{c}=1\qquad\text{multiply both sides by}\ c\neq0\\\\6=c\to c=6

\text{Put it to the equation in the intercept form:}\\\\\dfrac{x}{6}+\dfrac{y}{6}=1\\\\\dfrac{x+y}{6}=1\qquad\text{multiply both sides by 6}\\\\x+y=6\qquad\text{subtract}\ x\ \text{from both sides}\\\\y=-x+6

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The table shows revenue R (in millions of dollars) of a company when it spends A (in millions of dollars) in advertising.
Orlov [11]
Advertising is x and revenue is y

(0,2)(2,6)
slope = (6 - 2) / (2 - 0) = 4/2 = 2

y = mx + b
slope(m) = 2
(0,2)...x = 0 and y = 2
now we sub and find b, the y int
2 = 2(0) + b
2 = b

so ur equation is : y = 2x + 2

spends 10 mill on advertising.....so x = 10
y = 2x + 2
y = 2(10) + 2
y = 20 + 2
y = 22.....so the revenue (y) of the company is 22 (million)
7 0
3 years ago
a sprinter running in the olympics starts at the 0 meter mark and ends at the 400 meter mark. it took him 65 seconds to run this
solniwko [45]

Answer:

I am not too sure but I think the answer would be 6

Step-by-step explanation:

3 0
2 years ago
Drag each angle measure to the correct location on the image. Each angle measure can be used more than once.
eimsori [14]

Answer

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Step-by-step explanation:

5 0
3 years ago
How do you factor this equation?<br> 7x²+5x-3
svetoff [14.1K]

Answer:

Step-by-step explanation:

This is a quadratic expression.  Use the quadratic formula to find the roots, and then once you have the roots, write the corresponding factors.

The coefficients of this quadratic expression are a = 7, b = 5 and c = -3

The discriminant is b^2 - 4ac, or 5^ - 4(7)(-3), or 25 + 84 = 109.  Because this is positive, we know that the expression has two unequal, real roots.

Using the quadratic formula, we now find these roots:

      -b ± √(discriminant)

x = --------------------------------   which here is:

                   2a

      -5 ± √109

x = -----------------

             14

The factors can be found from these two roots.  The first one is

      -5 - √109                  5 + √109

(x - ---------------- )  =  (x + ---------------- )

             14                              14

and the second is

        5 - √109              

(x + ---------------- )  

             14                

8 0
3 years ago
The coastline of the United States is 12,383 miles long Canada coastline is 113,211 miles longer than the coastline of the Unite
jek_recluse [69]
125,594 miles. Canada coastline (x)  - U.S. Coastline (12,383) = 113,211.
x - 12,383 = 113,211
x - 12,383 + 12,383 = 113,211 + 12,383 (by addition property of equality)
x = 113,211 + 12,383
x = 125,594
Basically, you add the two given numbers together.
8 0
3 years ago
Read 2 more answers
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