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3 years ago

(Calc 1) Need help understanding this graph pls I tried to do it but it was wrong

Mathematics

1 answer:

Leona [35]3 years ago

7 0

You have #1 and #2 switched up.
The x->2- says you’re coming towards 2 from numbers less than 2.
The x->2+ says you’re coming towards 2 from numbers greater than 2.
See the attached photo.

The other one is #5.
Since there is an open circle at (0,0), this says there really isn’t a point there. f(0) is undefined. (You might need to say DNE for the computer.)

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3 years ago

Read 2 more answers

Find an equation of the circle that satisfies the given conditions. Endpoints of a diameter are P(−2, 1) and Q(8, 9)

IrinaK [193]

Answer:

Equation of the circle (x-3)²+(y-5)²=(6.4)²

x² -6x +9 +y² -10y +25 = 40.96

Step-by-step explanation:

Step(i):-

Given endpoints of diameter P(−2, 1) and Q(8, 9)

Centre of circle = midpoint of diameter

Centre = $(\frac{-2+8}{2} ,\frac{1+9}{2} )$

Centre (h, k) = (3 , 5)

Step(ii):-

The distance of two end points

PQ = $\sqrt{(x_{2}-x_{1} )^{2} +(y_{2} -y_{1} )^{2} }$

$PQ= \sqrt{(8+2 )^{2} +(8 )^{2} }$

PQ = √164 = 12.8

Diameter d = 2r

radius r = d/2

Radius r = 6.4

Final answer:-

Equation of the circle

(x-h)²+(y-k)² = r²

(x-3)²+(y-5)²=(6.4)²

x² -6x +9 +y² -10y +25 = 40.96

x² -6x +y² -10y = 40.96-34

x² -6x +y² -10y -7= 0

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3 years ago

What is the quotient of the following in simplest form? 5/9 divided by 2/3

Assoli18 [71]

Answer:

5/6

Step-by-step explanation:

You write the question as such: 5/9 divided by 2/3.

After that, you keep the first fraction, flip the sign and the fraction.

You will get: 5/9 multiplied by 3/2.

When you get this, you then cross multiply and simplify as such.

5/3 multiplied by 1/2.

5/6 would be your solution.

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3 years ago

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Step-by-step explanation: since the f(x) is -7 it would be 9 times -7 then minus 7 and get the answer.

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