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Phoenix [80]
3 years ago
12

Given the equations of the lines 2x – y = 4 and 3x + 2y = -1. Do these lines intersect? If

Mathematics
1 answer:
sweet [91]3 years ago
6 0

Answer:

here you go i hope it helped

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O) x² – 18x - 19 + 20y - y2,​
pshichka [43]

Answer:

19x-19+23y

Step-by-step explanation:

add the like terms

7 0
3 years ago
3. Find the value of m for which the equation mx + 14 = 12 + 2 has one repeated root.
umka2103 [35]

Using the discriminant of a quadratic equation, it is found that the quadratic equation would have one repeated solution for m = -3.

<h3>What is the quadratic equation?</h3>

The quadratic equation is given as follows:

mx² + 12x - 12.

<h3>What is the discriminant of a quadratic equation and how does it influence the solutions?</h3>

A quadratic equation is modeled by:

y = ax^2 + bx + c

The discriminant is:

\Delta = b^2 - 4ac

The solutions are as follows:

  • If \mathbf{\Delta > 0}, it has 2 real solutions.
  • If \mathbf{\Delta = 0}, it has 1 real solutions.
  • If \mathbf{\Delta < 0}, it has 2 complex solutions.

For this problem, the coefficients are:

a = m, b = 12, c = -12.

Hence the discriminant is:

b² - 4ac = 144 + 48m.

We want it to be of 0, hence:

144 + 48m = 0

m = -144/48

m = -3.

More can be learned about the discriminant of a quadratic equation at brainly.com/question/19776811

#SPJ1

7 0
1 year ago
Write a proportion you could use to convert 2.5 gallons to quarts.
marusya05 [52]
We know there are 4 quarts in a gallon, so how many quarts in 2.5 gallons anyway?

\bf \begin{array}{ccll}&#10;quarts&gallons\\&#10;\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\&#10;4&1\\&#10;x&2.5&#10;\end{array}\implies \cfrac{4}{x}=\cfrac{1}{2.5}\implies \cfrac{4\cdot 2.5}{1}=x
5 0
3 years ago
Choose the expression that represents a cubic expression.
tino4ka555 [31]

The answer is C) 4x3 − 3x2 − 2x + 11

8 0
3 years ago
Number in box to complete calculation. 3302 ÷ 13
Tpy6a [65]

Answer:

254

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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