2 years ago

What does it mean when a function is one-to-one?

1 answer:

3 0

Let a function be defined from A to B then f is said to be one to one function if every element of domain has its unique image in co- domain . In other words, if each separate elements of set A are mapped with separate of set B then such function is known as one to one function.

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How many minutes he does arm routine and abdominal routine

AlekseyPX

Let $x$ be the amount of time it takes to perform an arm routine and $y$ be the amount of time it takes to perform an abdominal routine. We see:

$4x+y=70$
$4x+2y=100$

Subtracting the second equation from the first gives $y=30$ . Substituting gives $4x+30=70$ , so $4x=40$ and $x=10$ .

Thus, an arm routine takes ten minutes and an abdominal routine takes thirty minutes.

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3 years ago

A circle has its center at (1, 4) and a radius of 2 units. What is the equation of the circle? (1 point) (x + 2)2 + (y + 4)2 = 2

yawa3891 [41]

Answer:

3rd one. The general form of a circle is set equal to the radius squared. So right side is 4 then plug in values until true.

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2 years ago

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What job will make 232,685 after 5 years

Komok [63]

Do you have a multiple choice selection of answers, because there is no way to pick a job out of the blue without certain choices and a math problem set up.

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2 years ago

15 is 60% of what number?

vlada-n [284]

Answer:

Step-by-step explanation:

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2 years ago

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Sasha brought chocolate and vanilla cupcakes to school for her birthday. 90 students decided to take a cupcake, and 9 of them pi

Wittaler [7]

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we need to to find what percentage 9 is of 90

from looking at this we can see that 90 is just 9*10

so 9% of students took a vanilla cupcake

Hope This Helps!!!

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2 years ago