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ale4655 [162]
3 years ago
13

Solve this system and list the method that you chose graphing substitution or elimination Y=2x-12

Mathematics
1 answer:
zmey [24]3 years ago
8 0
Substitution

y = 2x - 12
y = -x + 3

-x + 3 = 2x - 12
+ x + x
-----------------------------
3 = 3x - 12
+ 12 + 12
-----------------------
15 = 3x
------ ------
3 3

x = 5


y = 2(5) - 12
y = 10 - 12
y = -2


The final answer is (5,-2).
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A car rental company offers two plans for renting a car: Plan A: 30 dollars per day and 13 cents per mile Plan B: 50 dollars per
Shkiper50 [21]

Answer: In order to save money for a 1 day rental with plan B, the number of miles must be greater than 153.84 miles

Step-by-step explanation:

Let x represent the number of miles driven with either plan A or B.

Plan A: 30 dollars per day and 13 cents per mile. It means that the cost of renting the car or one day and driving x miles is

30 + 0.13x

Plan B: 50 dollars per day with free unlimited mileage. It means that the cost of renting the car or one day and driving x miles is 50

In order to save money for a 1 day rental with plan B, the number of miles would be

50 < 30 + 0.13x

50 - 30 < 0.13x

20 < 0.13x

0.13x > 20

x > 20/0.13

x > 153.84 miles

5 0
4 years ago
Which is the direct linear variation equation for the relationship?
jenyasd209 [6]
I'm going to guess but I believe it is A
7 0
3 years ago
4(x-2)+2x = 10
sleet_krkn [62]

Answer:

x = 3

Step-by-step explanation:

Given:

4(x-2)+2x=10

Step 1: 4x-8+2x=10

Step 2:4x+2x-8=10

Step 3: 4x+2x-8+8=10+8

Now Solving for next steps we get

Step 4: 6x=18

dividing both side by 6 we get

Step 5:\frac{6x}{6} =\frac{18}{6}

And So the Final Answer is:

x = 3

8 0
4 years ago
4m-3n=8, for m wats yeah
stealth61 [152]
The answer would be (8+3n)/4
7 0
3 years ago
milo is talking to his sister lisa about factors. he said he thinks that any even number always has more factors than any odd nu
UkoKoshka [18]

Answer:

I agree with Lisa

Step-by-step explanation:

* Lets explain the meaning of the factors of a number

- Factors are the numbers you multiply to get another number

- Ex: factors of 12 are 1 , 2 , 3 , 4 , 6 , 12 because

 1 × 12 = 12 , 2 × 6 = 12 , 3 × 4 = 12

- 1 is a factor every number

- The number is a factor of itself

* Lets solve the problem

- Milo said he thinks that any even number always has more

 factors than any odd number

- Lisa said she doesn't agree with him

* Lets take some examples for even and odd number to prove who

 is right

- We will chose numbers between 1 and 22

# Even numbers: 2 , 4 , 14 , 18

# Odd numbers: 3 , 9 , 15 , 21

∵ The factors of 2 are 1 , 2

∴ 2 has 2 factors

∵ The factors of 4 are 1 , 2 , 4

∴ 4 has 3 factors

∵ The factors of 14 are 1 , 2 , 7 , 14

∴ 14 has 4 factors

∵ The factors of 18 are 1 , 2 , 3 , 6 , 9 , 18

∴ 18 has 6 factors

∵ The factors of 3 are 1 and 3

∴ 3 has 2 factors

∵ The factors of 9 are 1 , 3 , 9

∴ 9 has 3 factors

∵ The factors of 15 are 1 , 3 , 5 , 15

∴ 15 has 4 factors

∵ The factors of 21 are 1 , 3 , 7 , 21

∴ 21 has 4 factors

∵ The number of the factors of the even numbers are 2 , 3 , 4 , 6

∵ The number of the factors of the odd numbers are 2 , 3 , 4

∴ The Factors of even numbers and odd numbers are equal

  like 2 and 3 , 4 and 9 , 14 and 15

 <em>OR</em>

  The factors of even number greater than the factors of the odd

  number like 18 the number of the factors of 18 is greater than the

  number of the factors of all odd numbers above

∴ <em>Not always that any even number has more factors than any odd</em>

<em>   number</em>

∴ I agree with Lisa

8 0
4 years ago
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