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Questions in mathematics

[Jawaban] Write: [tex]a^6 \cdot a^5 \div a^2[/tex] as a power to the base [tex]a^3[/tex]

[Jawaban] A circle centered at the origin contains the point $(0,-9)$. Does $(8, \sqrt{17})$ also lie on the circle? A. No, the distance from the center to the point ($8, \sqrt{17}$) is not the same as the radius. B. No, the radius of 9 units is different from the distance from the center to the point $(8, \sqrt{17})$. C. Yes, the distance from the origin to the point ($8, \sqrt{17}$) is 9 units. D. Yes, the distance from the point $(0,-9)$ to the point ($8, \sqrt{17}$) is 9 units.

[Jawaban] What is the discriminant of the polynomial below? [tex]4 x^2+4 x+1[/tex] A. -12 B. 32 C. -4 D. 0

[Jawaban] Which expression is missing from step 7? 8. [tex]2+ d ^2+ e ^2= d ^2-2 d e + e ^2[/tex] [tex]2=-2 d e[/tex] [tex]-1=d e[/tex] [tex](1+d^2)+(e^2+1)=d^2-2 d e+e^2[/tex] substitution property of equaling

[Jawaban] A meteorologist used the expression below to describe how the temperature changed. [tex]$-5+(-4)$[/tex] Which statement could describe how the temperature changed? A. The temperature was -5 degrees, then it increased 4 degrees. B. The temperature was -5 degrees, then it decreased 4 degrees. C. The temperature was 5 degrees, then it increased 4 degrees. D. The temperature was 5 degrees, then it decreased 4 degrees.

[Jawaban] The famous iris dataset (the first sheet of the spreadsheet linked above) was first published in 1936 Fisher. The dataset contains 50 samples from each of 3 iris species: setosa, virginia, and versicolor. are measured, all in cm: sepal length, sepal width, petal length, and petal width. What is the equation for the least square regression line where the independent or predictor variable and the dependent or response variable is petal width for iris setosa? [tex]$\hat{y}=Ex .1 .234 x+\square \text { Round to three decimal places. }$[/tex] What is the predicted petal width for iris setosa for a flower with a petal length of 4.46? [tex]$\qquad$[/tex] cm Round to three decimal places.

[Jawaban] Which of the following is the numerical form of five hundred sixty-seven ten-thousandths? A. 0.000567 B. 0.0000567 C. 0.567 D. 0.0567

[Jawaban] A number added to another number and the result divided by a square is the same as a square times the number. Find the number.

[Jawaban] Q.1 Find the products: i) 6 x (-14) vi) -50 x (-10) x 60 vii) -16 x (-9) x (-8) x (-7)

[Jawaban] Which equation represents a circle with a center at $(-4,9)$ and a diameter of 10 units? A. $(x-9)^2+(y+4)^2=25$ B. $(x+4)^2+(y-9)^2=25$ C. $(x-9)^2+(y+4)^2=100$ D. $(x+4)^2+(y-9)^2=100