Given the root of -5+2i, we are asked to describe the best statement that describes the polynomial. The root -5+2i cannot exist without its conjugate root, -5-2i. Complex roots are always accompanied by at least 1 real root. Since there are only 3 roots, there should be one root only, hence the answer is B.<span>
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Answer:
B.
Step-by-step explanation:
y = x^2 - x - 12
y = (x-4)×(x+3) that means x it either 4 or -3
y = x + 3
for x = 4 ➡ y = 3+4 ➡7
for x = -3 ➡ y = -3 + 3➡0
(the answer key is most probably faulty there's no way for y to be 0 in both scenarios)
Answer:
see the attached
Step-by-step explanation:
<u>Step 1</u>.
The sample size is the number of numbers. There are 10 of them.
n = 10
The mean is the sum of the numbers (1240) divided by the number of them (10).
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<u>Step 2</u>.
It is convenient to let a spreadsheet (or calculator) do the math. Enter the numbers and the formulas shown in the table, and let the spreadsheet do the rest.
The formulas for the sample variance and sample standard deviation are given. Fill in the numbers you have so far and do the indicated calculation.
Sin55 = x/26
26sin55 = x
x = 21.298
Square the base, height and hypotenuse
add the base and height together and if it equals the hypotenuse it is a right triangle
example:
base = 3, height = 4, hypotenuse = 5
3^2 + 4^2 = 9 + 16 = 25
5^2 = 25
25 = 25 so that would be a right triangle.
