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3 years ago

Given P(1,3) and Q(3,7) what is the slope of PQ

Mathematics

1 answer:

Aleksandr [31]3 years ago

8 0

Answer:

hi! you have 2 points! this means slope formula! y2-y1/x2-x1

okay all you do now is plugin! (x1 1,y1 3) (x2 3,y2 7) what I did was label your x1 y1 x2 y2! now just follow the formula and that / is division or basically a fraction

7-3/3-1

that equals -5! and that's your slope! memorize the formula it helpss!

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jeyben [28]

Answer:

Anna is 41 years old.

Step-by-step explanation:

Easiest way to do this is by building a equation,

Lest say Anna's age is $x$ .

Then as Peter is 3 years older than Anna Peter's age should be $x+3$ .

Then the combined ages of the two people is given as 85. So we can write an equation as,

$x+(x+3)=85$

$x+x+3=85$

$2x+3=85$

$2x+3-3=85-3$ (deducting 3 from both sides of the equation)

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$x=41$

As we originally took Anna;s age as $x$

We can say Anna is 41 years old.

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The total bill (before tax and tip) = $90

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0.06 x $90 = $5.4

Tip = 20% = 0.20

0.20 x $90 = $18

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