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3 years ago

How do I find the domain?

Mathematics

1 answer:

chubhunter [2.5K]3 years ago

7 0

Domain is the set of numbers you can use for the equaiton

remember you can't divide by zero, or take the squaer root of a negtive number (we don't have sqrts in this quesiton so don't worry about last one)

so you can't divide by 0
domain =all real number except those that make divide by zero

where is that?
x-1=0
x=1

when x=1, we can't allw that

domain=all real numbers except 1

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Rewrite the equation by completing the square.

Pavlova-9 [17]

Answer:

$(x-\frac{1}{2})^2=\frac{81}{4}$

Step-by-step explanation:

Hi there!

$x^2-x-20=0$

This equation is written in the form $ax^2+bx+c=0$ . First, use partial factoring:

$(x^2-x)-20=0$

For x^2-x, the <em>b</em> value is -1 in $ax^2+bx+c$ . To complete the square, take the square of half of 1 and add it in the parentheses as the <em>c</em> value:

$(x^2-x+\frac{1}{2}^2 )-20=0$

However, when adding values to one side of the equation, we must to the same to the other side:

$(x^2-x+\frac{1}{2}^2 )-20=\frac{1}{2}^2$

Complete the square:

$(x-\frac{1}{2})^2-20=\frac{1}{4}$

Move 20 to the other side

$(x-\frac{1}{4})^2=\frac{1}{4}+20\\(x-\frac{1}{2})^2=\frac{81}{4}$

I hope this helps!

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3 years ago

Gordon baked 3 apple pies for Thanksgiving dinner. There were 16 people over at the house, including Gordon. Each person ate the

Alenkinab [10]

Answer:

3/16

Step-by-step explanation:

Since there were 3 apple pies and 16 people each person was able to obtain 3/16 of a pie.

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3 years ago

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You are given two functions f(x) and g(x). How has the graph of g(x) changed from that of f(x)?

madreJ [45]

Answer:

C. g has been shifted down five units and to the left two units from f

Step-by-step explanation:

Sana makatulong

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3 years ago

A farmer planted 3 types of trees on 22 acres of land. He planted 48 trees per acre. What is the total of trees the farmer plant

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Hey there! :D

He planted 48 trees per acre. Ignore the '3 types of trees' part. I think the question is trying to confuse you. Multiply 48 by 22.

48*22= 1056

The farmer has planted 1056 trees.

I hope this helps!
~kaikers

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4 years ago

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A bag contains a mixture of 300 red and 75 yellow candies. If you choose one candy at random, what is the probability that it is

natta225 [31]

Answer: A solid 4% chance of picking a yellow

brainliest plz

Step-by-step explanation: We first should combine 300 and 75 because those are the total values of the candies in the bag. After, we should divide the different candies by the total amount of them getting the numbers .8 for red and .2 for yellow. Since the question is that the yellow occurs but not the red and you can miss the bag you would want to calculate what the probability would be to have B happen but not A. The equation for that is:

(1 - P(A)) × P(B)

where P(A)=.8 and P(B)=.2

plugging in all things it would be

(1-.8)*.2

which equals .04 or 4%

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