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kifflom [539]
3 years ago
12

X+ 7 = 7find the slope ​

Mathematics
1 answer:
Sav [38]3 years ago
7 0

Answer:

x = 7

Step-by-step explanation:

x + 7 = 7 \\ x = 7 - 7 \\ x = 0

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The function Q(x)=2x^2-kx+18. For what value of k does Q(x) have one distinct real solution? (NEEDS TO BE DONE WITHIN 2 HOURS!)
Aliun [14]

Answer:

k = 12

Step-by-step explanation:

Given:

The equation Q(x)=2x^2-kx+18

To find:

Value of k = ? for which the given equation has one distinct real solution.

Solution:

The given equation is a quadratic equation.

There are always two solutions of a quadratic equation.

For the equation: ax^{2} +bx+c=0 to have one distinct solution:

b^2 - 4ac = 0

Here,

a = 2,

b = -k and

c = 18

Putting the values, we get:

(-k)^2 - 4\times 2\times 18 = 0\\\Rightarrow k^2 = 18\times 8\\\Rightarrow k^2 =144\\\Rightarrow k = 12

The equation becomes:

Q(x)=2x^2-12x+18

And the one root is:

2(x^2-6x+9 ) = 0\\\Rightarrow 2(x-3)^2=0\\\Rightarrow x = 3

4 0
3 years ago
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Shtirlitz [24]
The jeep gets 22 miles per gallon...

he has 5 gallons in the tank already....
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7 0
3 years ago
The weekly pay that Melissa receives varies directly with the number of hours she works. If she works 34 hours she makes 274.04.
ohaa [14]

Answer:

Step-by-step explanation:

274.04/34=8.06(21)=169.26

6 0
3 years ago
Suppose I rolled a fair six-sided die. Let R=number rolled. What is the sample space,
Mariana [72]

Answer:

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2 years ago
Find all solutions of the equation sin^2 x=2sinx+3
Mashutka [201]
\sin^2x=2\sin x+3
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So you could choose A=-\dfrac\pi2 and B=2.
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3 years ago
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