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pickupchik [31]
3 years ago
13

Which equation is a linear function? y=2^x -1 y=x/2-5 y=2/x +3 y=x^2 +7

Mathematics
1 answer:
Umnica [9.8K]3 years ago
5 0

Answer:

Second Choice.

Step-by-step explanation:

y = mx + b

That is the linear function. Any coefficients with higher degrees won't be considered as a linear function.

So we can cut out the first and last choice.

Then we have only two choices which are

y =  \frac{x}{2}  - 5 \\ y =  \frac{2}{x}  + 3

The second equation is called <u>Rational</u><u> </u><u>Function</u><u> </u>where a variable is a denominator.

Therefore, the correct answer is second choice.

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please help. i stayed up all night finishing this schoolwork i need help pleaseee please omg im begging someone to help me
ad-work [718]

Answer: Choice D) x = a\left(1-\frac{y}{b}\right)

================================================

Work Shown:

\frac{x}{a}+\frac{y}{b} = 1\\\\\frac{x}{a} = 1-\frac{y}{b}\\\\x = a\left(1-\frac{y}{b}\right)\\\\

Explanation:

First I subtracted y/b from both sides. Then I multiplied both sides by 'a' to fully isolate x. You can optionally distribute the 'a' through to each term inside the parenthesis, but your teacher has chosen not to do this.

5 0
2 years ago
PLEASE HELP!!
VladimirAG [237]

Answer:

Sphere Volume = (4/3) * PI * radius^3

radius = cube root (Sphere Volume) / (4/3)*PI

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Answer is B

Step-by-step explanation:

4 0
3 years ago
A boat has a speed of 15 mph in still water. It travels downstream from Greentown to Glenavon in g hours. It then goes back upst
Lerok [7]

Step-by-step explanation:

We want to find two things-- the speed of the boat in still water and the speed of the current.  Each of these things will be represented by a different variable:

B = speed of the boat in still water  

C = speed of the current

Since we have two variables, we will need to find a system of two equations to solve.

How do we find the two equations we need?  

Rate problems are based on the relationship Distance = (Rate)(Time).


Fill in the chart with your data (chart attached)

The resulting speed of the boat (traveling upstream) is B-C miles per hour.  On the other hand, if the boat is traveling downstream, the current will be pushing the boat faster, and the boat's speed will increase by C miles per hour.  The resulting speed of the boat (traveling downstream) is B+C miles per hour.  Put this info in the second column in the chart.  Now plug it into a formula! <u>Distance=(Rate)(Time) </u>Now solve using the systems of equations!

6 0
3 years ago
What is the rule for the pattern 3 12 6 24 12 48 24
schepotkina [342]

Multiply by 4 is your rule

3 x 4 = 12

6 x 4 = 24

12 x 4 = 48

To solve for the answer for 24, multiply it by 4

24 x 4 = 96

96 is the match for 24

hope this helps

8 0
3 years ago
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A clothing design company pays two different people to design its T-shirts.
irina [24]

Answer: D

Step-by-step explanation:

5 0
3 years ago
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