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4 years ago

College precalc! Please help! I've been struggling.

Mathematics

1 answer:

kiruha [24]4 years ago

8 0

Answer:

B) f(x) = x if x ≤ -2

2 if x > -2

Step-by-step explanation:

B) f(x) = x if x ≤ -2 (The x and y coordinate have the same value)

2 if x > -2

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10–{22–[(−9)+(−11)]} help i'M HAVING A bad day :( fix it

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Answer:

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4 years ago

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4 years ago

Casey has n nickels. Megan has 4 times as many nickels as Casey has. Write and expression for the total number of nickels Casey

AnnyKZ [126]

Step-by-step explanation:

Let n be the number of nickels that Casey has.

We are told that Megan has 4 times as many nickels as Casey has, therefore, the number of nickels that Megan has will be 4*n.

Now we will add the amounts of nickels that Casey and Megan have to find the total amount of nickels.

$\text{Total number of nickels Casey and Megan have}=n+4*n$

Therefore, the expression $n+4*n$ will represent the total number of nickels that Casey and Megan have .

Upon combining like terms we will get,

$\text{Total number of nickels Casey and Megan have}=(1+4)n$

$\text{Total number of nickels Casey and Megan have}=5n$

Therefore, Casey and Megan have 5n nickels.

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3 years ago