MATHEMATICS MIDDLE SCHOOL

Trey knows that 3+4=4+3 and 3*4=4*3.He says that 3^4=4^3. Is Trey correct?

Answers

Answer 1
Answer:

He is not correct because 3^4 power is 81 and 4^3 power is 64

3*3*3*3

9*9

81


4*4*4

16*4

64
Answer 2
Answer:

Answer:

yup

Step-by-step explanation:

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2: What's area and circumference of circle if diameter is 2 inches?
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Answers

1.20in, 10in 2.? 3.?

What is the value for n-(-5)=35

Answers

n - (-5) = 35
n = 35 + (-5)
n = 30

Answer: 30

Answer:

30

Step-by-step explanation:

96 divided by 6 distributive property of multuiplication

Answers

Do 96 divided by 6.

6 goes into 96 16 times. therefore, your answer is 16

What is 5/6, 11 5/6, 3/10, 12 3/10, 5/16, and 8 5/18 in decimal form?

Answers

0.83, 11.83, 0.3, 12.3, 0.3125, 8.27777778

A rectangle has a width of 4 inches and a length of 6 inches. A similar rectangle has a width ​

Answers

Answer:

Step-by-step explanation:

6 times 4 is 24 so the answer is 24

Find the quadratic regression for (-1,1) , (0,0) , (1,1)

Answers

3 points define a parabola, so the regression will be unique. You want to find a quadratic polynomial P_2(x)=\beta_0+\beta_1x+\beta_2x^2 such that

\begin{cases}\beta_0-\beta_1+\beta_2=1\n\beta_0=0\n\beta_0+\beta_1+\beta_2=1\end{cases}

where the system above is generated by setting P_2(-1)=1, P_2(0)=0, and P_2(1)=1.

Since \beta_0=0, we have

\begin{cases}-\beta_1+\beta_2=1\n\beta_1+\beta_2=1\end{cases}\implies2\beta_2=2\implies\beta_2=1\implies\beta_1=0

So the regression for the given data points is P_2(x)=x^2.
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