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Nonamiya [84]
3 years ago
7

Determine which of the lines, if any, are parallel. Explain.

Mathematics
1 answer:
maxonik [38]3 years ago
4 0

Isolate the variable y

Line a: 3y = x+6

            y =  1/3x + 2

Line b: 3y = x+18

            y = 1/3 x + 6

Line c: 3y = 2x+9

            y = 2/3x +3

Explanation:

Lines a and b are parallel because they have the same slope of 1/3.

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Given the quadratic equation: f(x) = x2+4x-21
ryzh [129]

Answer:

x = - 7, x = 3

Step-by-step explanation:

To find the x- intercepts let f(x) = 0 , that is

x² + 4x - 21 = 0

Consider the factors of - 21 which sum to give the coefficient of the x- term (+ 4)

The factors are + 7 and - 3, since

7 × - 3 = - 21 and 7 - 3 = + 4, then

x² + 4x - 21 = 0

(x + 7)(x - 3) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 7 = 0 ⇒ x = - 7

x - 3 = 0 ⇒ x = 3

6 0
3 years ago
the larger of two numbers is 3 more than the smaller number if the sum of the numbers is 73 what are the two numbers
Zinaida [17]
The two numbers used in the equation are 70+3. :D
4 0
3 years ago
DO NOT SKIP!! Let’s see who smart enough to work out both problems
gavmur [86]

Answer:

where are the 2 problems?

8 0
3 years ago
5=5ax+1 please help, its due in an hour.<br><br> solve for x
RUDIKE [14]

Answer:

x= 4/5a

Step-by-step explanation:

5=5/ax+1

Step 1: Multiply both sides by a.

5a=a+5x

Step 2: Flip the equation.

a+5x=5a

Step 3: Add -a to both sides.

a+5x+−a=5a+−a

5x=4a

Step 4: Divide both sides by 5.

5x/5=4a/5

x= 4/5a

Hope this helps!

4 0
3 years ago
Please answer correctly math problemo
MrMuchimi

Answer:

38

Step-by-step explanation:

We have to substitute x with 2 and y with 4

when the sign of a operation is not expressed it means that the operation is a

multiplication

So we have

3*2 + 2*(4)^2

6 + 2*(16)

6 + 32

38

4 0
3 years ago
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