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Natasha_Volkova [10]

3 years ago

8

jeb has to pay a plumber $65 to come to his house and $40 per hour after thst (y = 40x + 65). If The Cost Is $145, how many hour

s did the plumber work?

1 answer:

schepotkina [342]3 years ago

6 0

Y=40x+65
145=40x+65
145-65= 40x
80=40x
80/40=x
x=2

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4 years ago

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Answer:

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(1,5) & (2,4)

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3 years ago

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So whatever happened does not matter, They are only asking the volume of liquid left in A at the end. Therefore :

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X² - 6x + 4 = 0<br><br> solve and show work. ...?

ycow [4]

The answer is 3 + √5 and 3 - √5.

This is quadratic equation: x² - 6x + 4 = 0
The general quadratic equation is ax² + bx + c = 0
Our equation can be rewritten: 1x² + (-6)x + 4 = 0
So, in our equation we have: a = 1, b = -6, c = 4

Now, x can be calculated using the formula: $x_{1,2}= \frac{-b+/- \sqrt{ b^{2}-4ac } }{2a}$
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From here:
$x_{1} =3+ \sqrt{5} \\ 
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6 0

4 years ago