MATHEMATICS HIGH SCHOOL

Y = X3 – X –1 if x = -1, Y = ?

Answers

Answer 1
Answer:

Answer:

-3

hope this helps!

Step-by-step explanation:

(-1)3 - (-1) - 1 =

-3 - (-1) - 1 =

-2 - 1 = -3
Answer 2
Answer:

Y = ( -1 ).3 - ( -1 ) - 1

Y = -3 + 1 - 1

Y = -3

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Values that can makes an inequality a true statement are called the ____________.

Answers

Values that can makes an inequality a true statement are called the solution set.  It  is the set of values that satisfy a given set of equations or inequalities. Hope this answers the question. Have a nice day. Feel free to ask more questions.

How do you do,
csc2x-cot2x = tanx

Answers

csc2x-cot2x=tanx \n \n ((1)/(2)cscxsecx) -( (cotx-tanx)/(2) )=tanx \n \n ((cscxsecx)/(2)) -( (cotx-tanx)/(2) )=tanx \n \n (( (1)/(sinx) (1)/(cosx) )/(2)) -( (cotx-tanx)/(2) )=tanx \n \n ((1)/(2(sinxcosx))) -( (cotx-tanx)/(2) )=tanx \n \n ((1)/(2(sinxcosx))) -( ((sinxcosx)*cotx-tanx)/(2*(sinxcosx)) )=tanx \n \n (1-(cos^2x-sin^2x))/(2(sinxcosx)) =tanx \n \n (1-cos^2+sin^2x)/(2(sinxcosx))=tanx

(sin^2x+sin^2x)/(2(sinxcosx)) =tanx \n \n (1-cos2x)/(sin2x) =tanx \n \n (sin2x)/(cos2x+1)=tanx \n \n tanx=tanx

The director of marketing at a large company wants to determine if the amount of money spent on internet marketing is a good predictor of company profit. She fits a least-squares regression line to 20 months of data and computes the following regression line:Profit = 372.6 + 17.2(advertising dollars)
What is the value of the residual for advertising dollars spent equal to $1,020 and Profit equal to $17,500? Round to the nearest integer.

Answers

Given:
Profit = 372.6 + 17.2(advertising dollars)
advertising dollars = 1,020
profit = 17,500

Profit = 372.6 + 17.2(advertising dollars)

We'll just input the amount specified in the equation. 
17,500 = 372.6 + 17.2 (1020)
17,500 = 372.6 + 17,544
17,500 = 17,916.60

As you can see, the values do not equal. Its difference is the residual value.

17,916.60 - 17,500 = 416.60 residual value

Many bicycles have 26 inch diameter wheels. The low gear attached to your pedals has a radius of 2.2 inches. The low rear gear, driven by the chain attached to the front gear, has a diameter of 3 inches. How far does the bike travel in one rotation of the pedals, i.e. the front gear revolves once.

Answers

The circumference is 'Pi' times diameter.

So one rotation of the pedals will cause the front chain drive to complete one full turn, so it will move the chain the same distance as it's circumference.

So it will move the chain  (2.2 Pi )inches. Then the back drive has a circumference of  3pi inches, but it only turns 2.2pi inches. So it turns 2.2pi/3pi = 11/15 of a full rotation. Since the wheel turns at the same rate as the back chain drive, the wheel will turn  11/15 of a full turn as well.

And since the back wheel is 26 inches in diameter, it's circumference is 26pi inches. If it turned a full rotation, it would go this distance along the ground, but it is only going  11/15 of this distance, so it is going (11/15)x 26pi =(286/15)pi inches. Or approximately 59.8997 inches.

What is the factored form of 125x6 – 8?(5x2 – 2)(25x4 – 10x2 – 4)
(5x2 – 2)(25x4 – 10x2 + 4)
(5x2 – 2)(25x4 + 10x2 + 4)
(5x2 – 2)(25x4 + 10x2 – 4)

Answers

If you would like to know the factored form of 125x^6 - 8, you can find this using the following steps:

125x^6 - 8 = (5x^2 - 2) * (25x^4 + 10x^2 + 4)

The correct result would be (5x^2 - 2) * (25x^4 + 10x^2 + 4).

Shana wants to use all 62 feet of the fencing she has to make a rectangular run for her dog. She decides to make the length of the run 20 feet. She writes and solves the equation 2 l plus 2 w equals 62 to find the width of the run.Which statements are true of the solution? Check all that apply.

The value of w is 10 feet.
The value of w can be zero.
The value of w cannot be a negative number.
Substitution is used to replace the variable l with a value of 20.
The subtraction property of equality is used to isolate the term with the variable w.

Answers

Answer:

The value of w cannot be a negative number.

Substitution is used to replace the variable l with a value of 20.

The subtraction property of equality is used to isolate the term with the variable w.

Step-by-step explanation:

Answer:

C,D,E

Step-by-step explanation:
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