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Aneli [31]
3 years ago
8

Solve for x. x2 − 9x + 20 = 0

Mathematics
2 answers:
nordsb [41]3 years ago
7 0

Answer:

x=4 or x=5

Step-by-step explanation:

Let's solve your equation step-by-step.

x2−9x+20=0

Step 1: Factor left side of equation.

(x−4)(x−5)=0

Step 2: Set factors equal to 0.

x−4=0 or x−5=0

x=4 or x=5

umka2103 [35]3 years ago
3 0

x has two values 4 and 5 by factorization or using the general formula

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Answer:

The equations are:

10x + 9y = 122

x + y       = 13

Step-by-step explanation:

Given Jose makes 10$ per hour washing cars and 9$ per hour walking dogs.

Also, it is given that he had worked for 13 hours total making 122$.

Let us assume the number of hours he spent on washing cars = 'x'.

Let us assume the number of hours he spent on walking dogs = 'y'.

Since, the total number of hours is 13, we can write:

x + y = 13           . . . eqn(1)

And since he has made 122$ in total, we will have:

10x + 9y = 122  . . .eqn(2)

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Solving them will give: x = 5 and b = 8.

6 0
3 years ago
Which table does NOT represent a linear function?
cupoosta [38]

Answer:

3rd

Step-by-step explanation:

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7 0
3 years ago
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alexandr1967 [171]

Step-by-step explanation:

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ipn [44]

Answer:

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Step-by-step explanation:

6 1/2 ---> 13/2

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3 years ago
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Answer:

Step-by-step explanation:

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The area A of a rectangle is given by the formula, A=lw , where l is the length and w is the width. Given that, the area is 500 square feet and the width is 20 feet. So, substitute these values into the formula. Divide each side by 20 to isolate l .

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2 years ago
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