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3 years ago

{(-3,1),(0,1),(3,1)} Domain= Range= Function?

Mathematics

1 answer:

Alecsey [184]3 years ago

4 0

Answer:

Domain : { -3, 0, 3}

Range : { 1 , 1 , 1 }

Function : These set of ordered pairs are functions as every x-value has only one y-value associated with it.

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a school bake sale earned over $25 from selling cookies, which cost $3 each. how many cookies did they sell? identify the number

SSSSS [86.1K]

It said the sale earned OVER $25 from selling cookies at $3 dollars each so if we let r=revenue , p=price per cookie and c=number of cookies sold:

pc>r and since p=3 and r=25

3c>25 divide both sides by 3

c>25/3

Since cookies are quantized units, they must be integers so:

c>8 1/3

c≥9 or in interval notation

c=[9, +oo)

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3 years ago

The remainder when aa is divided by 77 is 22 and the remainder when bb is divided by 77 is 55. (so a mod 7=2a mod 7=2, b mod 7=5

olasank [31]

$a\equiv2\pmod7$
$b\equiv5\pmod7$

$a+a\equiv2+2\equiv4\pmod7$

$a+b\equiv2+5\equiv7\equiv0\pmod7$

$3a\equiv6\pmod7$

$2b\equiv10\equiv3\pmod7$

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3 years ago

Find the slope of the line that passes through the points (0-2) and (1.4).

vredina [299]

Answer:

m = 6

Step-by-step explanation:

$m=\frac{rise}{run}=\frac{4+2}{1-0}=\frac{6}{1}=\boxed{6}$

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3 years ago

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I just need an explanation for both of these! Help would be greatly appreciated, thanks. :))

Aleksandr [31]

Answer:

1. Well, to cross multiply them you multiply the numerator in the first fraction times the denominator in the second fraction, then you write that number down. ... The reason we cross multiply fractions is to compare them. Cross multiplying fractions tells us if two fractions are equal or which one is greater.

2. Cross multiplying fractions to find a missing numerator or denominator for equivalent fractions works because it is a shortcut for rearranging to isolate the variable.

Step-by-step explanation:

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3 years ago

Exploring permutations (PLEASE HELP)

amid [387]

Answer:

3 ways for number 1

Step-by-step explanation:

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2 years ago

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