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3 years ago

Which system is most easily solved by graphing and why?

Mathematics

1 answer:

inn [45]3 years ago

8 0

Answer:

System A should be solved by elimination because you can easily cancel out the 3m to solve.

System B should be solved by substitution. Since the an equation for the y value is given, you can easily substitute it into the other equation.

System C should be solved by graphing. You don't have to worry about any slopes or intercepts to graph. You can graph it using only whole numbers.

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12v+14+10v=80 combine Like terms again

sammy [17]

Well 12v and 10v are like terms so combine them.
22v+14=80
If you are trying to solve the full equation it would look something like this:
22v+14=80
22v=56
<u>22v=56</u>
22
v=2.54

4 0

3 years ago

Read 2 more answers

Help plssssss!!! (((:

katrin2010 [14]

Answer:

AB = 4.41

Step-by-step explanation:

cos theta = opposite / hypotenuse

We know theta = 25 and the opposite side =4

cos 25 = 4 / hypotenuse

Multiply each side by hypotenuse

hypotenuse * cos 25 = 4/ hypotenuse * hypotenuse

hypotenuse * cos 25 = 4

Divide each side by cos 25

hypotenuse * cos 25/ cos 25 = 4/cos 25

hypotenuse = 4/cos 25

hypotenuse = 4.413511676

Round to the nearest hundredth

hypotenuse = 4.41

6 0

3 years ago

A car dealership offers customers two pricing options for vehicle repair. Option 1: pay $80 per hour of wok. Option 2: pay a sta

Ierofanga [76]

Answer:

1: The initial value for option one is not charged

The rate of change for option 1 is $80/hr

Step-by-step explanation:

1. From the pricing options at the car dealership we have;

Option 1

Initial value = Not stated

Fee rate per hour of work = $80

Option 2

Standard fee = $100

Fee rate per hour of work = $400

The initial value for option one is not charged

The rate of change = The increase in payment for each increase in one hour of work = $80/hour

Mathematically, we have;

$The \ rate \ of \ change = \dfrac{\Delta Payment}{\Delta Time} = \dfrac{\$80 - \$0}{1 \, h- 0 \, h} = \$ 80/hr$

5 0

3 years ago

For his phone service, Ivan pays a monthly fee of $14, and he pays an additional $0.05 per minute of use. The least he has been

Tomtit [17]

Answer:

1215 minutes are the possible numbers he has used his phone in a month.

Step-by-step explanation:

He has a monthly fee of 14$ then to the least that he has been charged we need to substract the monthly fee as follows:

Monthly charged = 74,75-14

Monthly charged= 60,75$

Then he pays an additional 0,05 $/minute of use, to know the consume:

Minutes= $\frac{60,75}{0,05}$

Minutes= 1215 possible numbers of minutes he has used his phone.

8 0

4 years ago

How to solve a problem.

mash [69]

a) $\log \left(\dfrac{A^3B}{C} \right) = 3\log A + \log B - \log C$

b) $\log \left(\dfrac{\sqrt{A}}{B^2} \right) = \frac{1}{2}\log A - 2\log B$

8 0

3 years ago