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Over [174]
2 years ago
5

Help please (3x^2 + 5x - 9) + (-3x + 4)

Mathematics
2 answers:
mixas84 [53]2 years ago
4 0

Answer:

3x^2 + 2x - 5

Step-by-step explanation:

can i have a brainlest plz

emmainna [20.7K]2 years ago
4 0

Answer:

(3x^2+5x-9-3x+4)

or, 3x^2+2x-5

or, 3x^2+(5-3)x-5

or, 3x^2-3x+5x-5

or, 3x(x-1)+5(x-1)

or, (x-1) (3x+5)

hope u get it

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The following data gives the scores of 13 students in a Biostatistics exam. 75 80 28 70 95 82 75 64 61 90 81 65 91 a) Find the f
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Answer:The following data gives the scores of 13 students in a Biostatistics exam. 75 80 28 70 95 82 75 64 61 90 81 65 91 a) Find the following statistical measures 1. Mean 2. Median 3. Mode 4. Range 5. 34th percentile 6. Interquartile Range 7. Variance 8. Standard deviation PRINCIPLES OF STATISTICS Assignment (1) Due Date: 15/7/2020 9. Coefficient of variation. b) (Without Calculations) If the instructor decide to add up 5 marks for every student, what are the values of the statistical measures mentioned in part (a). c) Construct the Boxplot of students' scores, and identify any possible outliers.

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3 years ago
What is the measure of the angle formed by the minute hand and hour hand of a clock in each case?
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180°

120°

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hope this helps

8 0
3 years ago
What is the value of b ?
HACTEHA [7]

Two polynomials are equal if the coefficients are equal.

x^3+(3+b)x^2+(3b-2)x-6\\\downarrow\qquad\ \ \downarrow\qquad\qquad\ \ \ \ \downarrow\\x^3\ +\ \ 6x^2\ \ \ \ +\ \ \ \ \ 7x\ \ -\ 6\\\\x^3\to1=1\\x^2\to3+b=6\\x\to3b-2=7\\constans\to-6=-6\\\\3+b=6\ \wedge\ 3b-2=7\\\\3+b=6\ \ \ |-3\\b=3\\\\3b-2=\ \ \ \ |+2\\3b=9\ \ \ \ |:3\\b=3\\\\Answer:\ \boxed{b=3}\to\boxed{B.}

6 0
3 years ago
Name a pair of perpendicular lines: <br>is line BC and AJ perpendicular: explain ​
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A pair of perpendicular lines would be line CF and line AJ.

Line BC and line AJ are NOT perpendicular because when a pair of lines are perpendicular, all angles become 90 degrees. It is obvious, in the case, if you were to slide line BC on top of line AJ, the angles will not equal 90 degrees.
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3 years ago
A survey of 25 grocery stores revealed that the mean price of a gallon of milk was $2.98, with a standard error of $0.10. What i
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Answer:

95% confidence interval: (2.784,3.176)

Step-by-step explanation:

We are given the following information in the question:

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\mu \pm z_{critical}(\text{Standard error})

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

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3 years ago
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