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BlackZzzverrR [31]
3 years ago
9

Explain how you can determine the number of real number solutions of a system of equations in which one equation is linear and t

he other is quadratic–without graphing the system of equations.
Mathematics
2 answers:
DerKrebs [107]3 years ago
4 0

Isolate one variable in the system of equations. Use substitution to create a one-variable equation. Then, set the quadratic equation equal to zero and find the discriminant. If the discriminant is negative, then there are no real number solutions. If the discriminant is zero, then there is one real number solution. If the discriminant is positive, then there are two real number solutions.

fenix001 [56]3 years ago
4 0

Answer:

e2020

Step-by-step explanation:

Use substitution to create a one-variable equation.

Set the quadratic equation equal to zero and find the discriminant.

The value of the discriminant will tell you how many real number solutions the system of equations has

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Luis earns a base salary of \$150.00$150.00 every week with an additional 14\%14% commission on everything he sells. Luis sold \
tester [92]

Answer: Luis earned $997.00 for last week.

$6,050.00 - 14%= $5,203.00

Just figure the difference ($847)

Then add his base salary.

4 0
4 years ago
Describe the transformations of how the graph y=x^2 can be transformed into y= -1/5 (x-4)^2 + 2
Orlov [11]

Answer:

Reflected over the x-axis, vertically shrunk by a factor of 1/5, moved right 4 units and up 2 units.

Step-by-step explanation:

Parent Graph: f(x) = a(bx - h)² + k

<em>a </em>is vertical stretch (a > 1) or shrink (a < 1) and reflection over x-axis

<em>b</em> is horizontal stretch or shrink and reflection over y-axis

<em>h</em> is horizontal movement left (if positive) or right (if negative)

<em>k</em> is vertical movement up (if positive) or down (if negative)

Now that we have our rules, we simply apply it to y = -1/5(x - 4)² + 2

<em>a</em> = -1/5, so reflection over x-axis and vertical shrink of 1/5 (1/5 < 1)

Nothing has changed <em>b</em>, so no horizontal stretch/shrink

<em>h</em> = -4, so horizontal movement right 4 units

<em>k</em> = 2, so vertical movement up 2 units

8 0
3 years ago
Darnell has
irinina [24]

Answer:

the answer is 28

Step-by-step explanation:

345÷12=28.75

you can't have a 0.75 shirt

7 0
3 years ago
Read 2 more answers
Pls help me on this!
Zigmanuir [339]

Answer:

4 45/100 Keep simplifying it. You can do it!

Step-by-step explanation:

4 is the whole. 45 is out of 100

7 0
3 years ago
Simplify the following
Goshia [24]

Answer:

9

Step-by-step explanation:

Using the rules of logarithms

logx^{n} = nlogx

log_{b} b = 1

Then

log_{x} x^{9}

= 9log_{x} x

= 9

4 0
3 years ago
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