MATHEMATICS MIDDLE SCHOOL

Subtract the following polynominals
3x^2-5x+12
5x^2+x-11

Answers

Answer 1

Answer:

3x^2-5x+12

-(5x^2+x-11)

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3x^2-5x+12

-5x^2-x+ 11

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-2x^2 -6x+23

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Three times a number is 42. What is the number?

Answers

x*3=42 -- divide by 3

x=42/3
x=14
The number is 14.

Answer:

Step-by-step explanation:

Tyler makes $10 per hour at his job.The function f(x)=10x gives the amount of money Tyler makes after x hours.Graph this function and give its domain and range.

Answers

You will have the points: (0,0) and (1,10) and (2,20) and (3,30) etc etc

Plot at least 2 of these points. Then draw a line through them.

Each point has an x,y pair such that the y value is ten times the x value

For example, if x = 2, then

y = 10*x = 10*2 = 20

so that shows how (2,20) is one of the points.

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The domain would be the set of positive whole numbers assuming Tyler can only work a whole number of hours. If partial time values are accepted, then the domain would be the set of positive real numbers. Negative x values are not allowed as Tyler can't work negative 3 hours for instance.

In a similar fashion, the range is the set {0, 10, 20, 30, 40, ...} incrementing by multiples of 10 if x is the set of positive whole numbers. If x is the set of positive real numbers, then y can be 0 or larger which sets up the range of y being the set of positive real numbers as well.

Lynn used 3/8 cups of flour and 1/3 cup of sugar in a recipe what number is a common denominator for 3/8 and 1/3

Answers

The common denominator for 3/8 and 1/3 is 24.

You borrowed $25 from your friend. You paid him back in full after 6 months. He charged $2 for interest. What was the annual simple interest rate that he charged you? Use the formula: I = Prt

Answers

Answer:

300

Step-by-step explanation:

25×6=150

150×2=300

25 is the principal amount or (P). 6 is the time or (T). Finally 2 is the interest rate or (R).

Hope this helped :)

Please asap brainlist - can or cant fill in queshtions

Answers

Answer: cant can, can can, cant cant

Step-by-step explanation:

yesterday Bethany sent 60 text messages she said that 50% of those messages were to her best friend how many text messages did Bethany send to her friend yesterday