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Kazeer [188]
3 years ago
12

Can someone help me with this- (WILL GIVE BRAINLIEST)

Mathematics
1 answer:
stiks02 [169]3 years ago
7 0

Answer:

2) No function

3) Function: y=30x

Domain: x≥0

Range: y≥0

4) Function: y=160

Domain: x≥20

Range: y=160

Step-by-step explanation:

You might be interested in
Probability Question
trapecia [35]

Answer:

39/812

Step-by-step explanation:

The total no. of balls is 6+7+8+9 = 30.

There are 4 possible outcomes that fits "all 3 balls taken are of the same color": 1. all red balls/2.all green balls / 3. all blue balls/4. all white balls. Either one will do. So the required probability is the sum of probability that these 4 outcomes happen.

First lets find the probability of taking out all red balls.

There are total 30 balls, but only 6 are red, so in the first try, the probability of taking out a red ball is 6/30.

In the 2nd time, since you have already taken out one red ball, the no. of red balls left is 5, and the total no. of balls is 29. So the probability of taking out another red ball is 5/29.

This repeats for the 3rd time. The probability of taking out the 3rd red ball is 4/28.

These 3 times all have to happen in order, so the total probability is

6/30 x 5/29 x 4/28

=1/203

Now find the probability of taking out all green balls. The process is same from finding the probability of taking out all red balls, just that replace 6 to 7 instead.

So, the probability of taking out all green balls is

7/30 x 6/29 x 5/28

=1/116

Repeat again for blue balls and white balls.

Probability of taking out all blue balls = 8/30 x 7/29 x 6/28 = 2/145

Probability of taking out all white balls= 9/30 x 8/29 x7/28 =3/145

Now add all 4 fractions up.

1/203 + 1/116 + 2/145 + 3/145

=39/812

By the way, another method is to use combination "nCr". You will also get the same answer.

n: number of items

r: number of items being chosen at a time

(Probability of all red balls + Probability of all green balls + probability of all blue balls + probability of all white balls)÷Total no. of combinations - which is random 3 balls out of 30.

(6C3 + 7C3 + 8C3 +9C3) / (30C3)

= 39/812

8 0
3 years ago
Read 2 more answers
Simplify the expression.<br> -5(7m + 9) =
OlgaM077 [116]

Answer:

Step-by-step explanation:

Here you go mate

Step 1

-5(7m + 9)  Equation/Question

Step 2

-5(7m + 9)  Simplify

(-5)(7m+9)

Step 3

(-5)(7m+9)  Multiply

-35m-45

Answer

-35m-45

Hope this helps

6 0
3 years ago
Read 2 more answers
Help? :3 Tysm if you do xD
Montano1993 [528]

The answer is A because 13 times 6 equals 78

8 0
3 years ago
Please Help With All
xeze [42]
4. B
5. <XWZ
6. B
7. 74
8 0
3 years ago
Can somebody help me please.
Fiesta28 [93]
I’m pretty sure it is 57?
7 0
3 years ago
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