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svlad2 [7]
2 years ago
6

(4,8), m=5 need a step by step answer please

Mathematics
1 answer:
Akimi4 [234]2 years ago
7 0

Answer:

8=4x+5

Step-by-step explanation:

Slope-intercept form: y=mx+b

1. Identify your terms:

x: 4

y:8

b/slope: 5

2. Solution:

8=4x+5

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3) How many liters of a 20% acid solution must be mixed with a 60% solution to obtain 40 liters of a 35% solution? (25,15)THATS
serg [7]
<span>let x = the number of liters of the 20% solution. 

let y = the number of liters of the 60% solution. 

you want x + y to be equal to 40 liters. 

x is the number of liters total in the first solution.
y is the number of liters total in the second solution. 

you want .2 * x + .6 * y to be equal to .35 * 40 

.2 * x is the number of liters of acid in the first solution.
.6 * y is the number of liters of acid in the second solution.
.35 * 40 is the number of liters of acid in the final solution. 

you have two equations that need to be solved simultaneously. 

they are: 

x + y = 40
.2x + .6y = .35*40 

simplify these equations to get: 


x + y = 40
.2x + .6y = 14 

you can solve by substitution or by elimination or by graphing.
i will solve this one by graphing.
this means to graph both equations and find the intersection. 

the graph looks like this: 

 
the graph says the intersection is at the coordinate point of (25,15). 

this means that x = 25 and y = 15. 

x is the number of liters of the 20% solution.
y is the number of liters of the 60% solution. 

the formula of .2x + .6y = 14 becomes .2 * 25 + .6 * 15 = 14.
simplify this equation to get 14 = 14.
this confirms the solution is good. 
</span>
8 0
3 years ago
Read 2 more answers
Which equation is perpendicular to y = 4x - 6 and passes through point (8, 12).
sergeinik [125]

Answer:

The line is ;

4y = -x + 56

or

y = -x/4 + 14

Step-by-step explanation:

Generally, the equation of a straight line is;

y = mx + c

where m represents the slope

so for y = 4x - 6

The slope is 4

If two lines are perpendicular, the product of their slopes is -1

So for the second line, the slope will be -1/4

The equation in the point slope format will be ;

y-12 = -1/4(x-8)

y-12 = -x/4 + 2

Multiply through by 4

4y-48 = -x + 8

4y = -x + 8 + 48

4y = - x + 56

7 0
3 years ago
Write an equation in slope-intercept form of the line that passes through the points (- 2, - 2) and (5, 12)
Tasya [4]

Answer:

y= 2 x + 2 i think

Step-by-step explanation:

4 0
2 years ago
Frenza is planning an $160,000 expansion to launch a new product line. Frenza currently earns $100,000 in net income, and the ne
Tcecarenko [31]

Based on the current income to Frenza, and the proposed expansion amount, the net income and return on equity for the three options are:

Don't Expand:

  • Net income = $100,000.
  • Return on equity = 25%.

Debt financing:

  • Net income = $137,200.
  • Return on equity = 34.3%.

Equity financing:

  • Net income = $150,000.
  • Return on equity = 26.8%.

<h3>What happens if Frenza doesn't expand?</h3>

Net income will remain at $100,000.

Return on equity would be:

= Net income / Equity

= 100,000 / 400,000

= 25%

<h3>What happens if Frenza uses debt financing?</h3>

Income goes to $150,000.

Net income:
= Income - interest

= 150,000 - (8% x 160,000)

= $137,200

Return on equity:

= 137,200 / 400,000

= $34.3%.

<h3>What happens if Frenza uses equity financing?</h3>

Income goes to $150,000.

No interest payment so net income is $150,000.

Return on equity:

= 150,000 / (400,000 + 150,000 new equity)

= 26.8%

Find out more on return on equity at brainly.com/question/1427854.

3 0
2 years ago
Find an equation for the line below.
Alexxx [7]
Answer - Y= 2x+b

Step by step explaining-
8 0
2 years ago
Read 2 more answers
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