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noname [10]
3 years ago
10

I have no idea how to do these problems. I keep on getting them confused somehow. Please help a sista out! ❤️

Mathematics
1 answer:
AveGali [126]3 years ago
3 0

You use the process of substitution to solve these problems

2y = 4x + 12 simplify

y = 2x + 6

now why can be plugged into the second equation

2x - (2x + 6) = -6

2x - 2x - 6 = -6

-6 = -6

therefore x is zero

plug it in

2y = 0 + 12

y = 6

what we realize though is

2y = 4x + 12

y = 2x + 6 (multiply by two to receive 2y = 4x + 12)

They are the same graph so there are infinite solutions but plugging in (-4,2) shows it is not a solution.

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What is the value of 2x+3y when x=5 and y=2 ?
sesenic [268]

Answer:

16

Step-by-step explanation:

2(5) + 3(2)=

2x5=10

3x2=6

10+6=16

4 0
3 years ago
Identify the vertical asymptotes of f(x) = quantity x minus 4 over quantity x squared plus 13 x plus 36
choli [55]
Expression: f(x) = [x - 4] / [x^2 + 13x + 36].

The vertical asympotes is f(a) when the denominator of f(x) is zero and at least one side limit when you approach to a is infinite or negative infinite.

The we have to factor the polynomial in the denominator to identify the roots and the limit of the function when x approachs to the roots.

x^2 + 13x + 36 = (x + 9)(x +4) => roots are x = -9 and x = -4

Now you can write the expresion as: f(x) = [x - 4] / [ (x +4)(x+9) ]

Find the limits when x approachs to each root.

Limit of f(x) when x approachs to - 4 by the right is  negative infinite and limit when x approach - 4 by the left is infinite, then x = - 4 is a vertical asymptote.

Limit of f(x) when x approachs to - 9 by the left is  negative infinite and limit when x approach - 9 by the right is infinite, then x = - 9 is a vertical asymptote.

Answer: x = -9 and x = -4 are the two asymptotes.

5 0
4 years ago
Read 2 more answers
How many 4-digit numbers can be made from the digits 2, 3, 4, 5, 6, 7 if no digit is repeated in the same number?
jonny [76]
THis equals the number of permutations of 4 from  6.

= 6P4  =  6! /  (6 - 4)!   = 6! / 2!  =  720/2  = 360 answer
8 0
3 years ago
Donut $2.50<br> Cupcake $4.25<br> Ice cream $3.80<br><br> I need help finding the equation
kati45 [8]
The answer is 10.55 l hope this helps
5 0
3 years ago
What is 3.57 as a fraction
Ainat [17]
357/100
because .57 is the same as 57 hundriths which translates to 57/100. Now you have 3 and 57/100 and to make thing into an improper fraction you follow these steps.
1. mulitply the whole number (the number in front on the fraction) by the denominator (the lower part of the fraction). In our case, multiply 3 and 100. You get 300.
2. Add your answer to the numorator (the upper part on the fraction). 300 plus 57 equals 357.
3. Use your answer as the new numorator and keep the original denomanator.
Answer: 357/100
3 0
3 years ago
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