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2 years ago

PLEASE HELP! I NEED TO GET THIS DONE SOON!

Mathematics

2 answers:

Mademuasel [1]2 years ago

7 0

Answer:

it's 6

Step-by-step explanation:

tensa zangetsu [6.8K]2 years ago

6 0

Answer:6

Step-by-step explanation:

In a circle, a radius perpendicular to a chord bisects the chord. So BC = CA BC = 6 (given) x (or AC) = 6 Answer = 6. Tell me if I was right. Thanks.

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Could you please help with this question for domain, range, and end behavior? I started it, but I think I'm doing it wrong.

Tanzania [10]

It looks like you have the domain confused for the range! You can think of the domain as the set of all "inputs" for a function (all of the x values which are allowed). In the given function, we have no explicit restrictions on the domain, and no situations like division by 0 or taking the square root of a negative number that would otherwise put limits on it, so our domain would simply be the set of all real numbers, R. Inequality notation doesn't really use ∞, so you could just put an R to represent the set. In set notation, we'd write

$\{x\in\re\mathbb{R}\}$

and in interval notation,

$(-\infty,\infty)$

The range, on the other hand, is the set of all possible outputs of a function - here, it's the set of all values f(x) can be. In the case of quadratic equations (equations with an x² term), there will always be some minimum or maximum value limiting the range. Here, we see on the graph that the maximum value for f(x) is 3. The range of the function then includes all values less than or equal to 3. As in inequality, we can say that

$f(x)\leq3$ ,

in set notation:

$\{f(x)\in\mathbb{R}\ |\ f(x)\leq3\}$

(this just means "f(x) is a real number less than or equal to 3")

and in interval notation:

$(-\infty,3]$

8 0

2 years ago

25. Tiffany deposited two checks into her account this month. One check was for $70 and the second was for $25. Her balance at t

Anna35 [415]

The first thing to do is to start with something not quite so

complicated, so you can get used to the ideas first. But let's go

ahead with this one, to check your work.

Here's one way I write these to demonstrate how to think it through:

(18/2){[(9 x 9 - 1)/ 2]-[5 x 20 - (7 x 9 - 2)]}

\____/ \_________/ \_________/

9 {[ 80 / 2]-[5 x 20 - 61 ]}

\______________/ \____________________/

9 { 40 - 39 }

\_______________________________________/

9 * 1

\____________________/

So you're correct, and your work was fine. The only thing I did

differently was to evaluate 18/2 earlier, because nothing stood in its

way; I could have waited as you did.

What parentheses do is to contain a subexpression that has to be fully

evaluated before it can be used in any containing expression. That's

why you work from the inside out: you can't use what's inside until

you evaluate it all, so you might as well start there. But if you

forgot to, you'd still have a reminder. Here's an example:

2[(3 + 7)(3 - 2) - 3(2 + 2)]

If I didn't bother with the inside-out "rule", I might just start

trying to evaluate at the left (paying attention to the order of

operations, of course): 2 times ... what? Well, the second number in

that multiplication is the whole thing inside [...], so I have to put

it on hold until I do that. So I focus on

(3 + 7)(3 - 2) - 3(2 + 2)

Now I start that. The first piece is (3 + 7), so I evaluate that

whole thing and get 10. Now I have to multiply it by (3 - 2), so I

stop and evaluate that, which gives 1. Now I can multiply 10 by 1 and

get 10. So I keep going; I have to subtract something from that, but

since the next bit is a product, I have to do that first. I'll have 3

times the next parenthesis; that's 3 times 4, so I have 12. The

subtraction I put off is 10 - 12 = -2.

Now, this is what the whole [...] is, so I go back and do that last

multiplication:

2*(-2) = -4

7 0

2 years ago

Here are two equations. k= a+b a+b+k=30 What is the value of k?

Rina8888 [55]

(1) k = a + b
(2) a + b + k = 30

subtitute a + b = k to (2)

k + k = 30

2k = 30 |divide both sides by 2

k = 15

5 0

2 years ago

What is the domain and the outputs

aliya0001 [1]

Domain:

input values

independent

Outputs:

output values

dependent

3 0

3 years ago

You have 15 gallons of lemonade to sell. You use cone-shaped cups that are 8 centimeters in diameter and 12 centimeters tall. Ea

Murrr4er [49]

Answer:

282.37

Step-by-step explanation:

15*3785=56775cm

use the cone formula volume to fine how many cups can be filled with the amount of lemonade.

πr^2 $\frac{h}{3}$

3.14·16· $\frac{12}{3}$ =201.06

56775/201.06=282.37

5 0

2 years ago