In which quadrant is the number -14 – 5i located on the complex plane? a.I b.II C.III D IV
Answers
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4x2 + 28x + 49 = 0
(x+) =
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Answer: x = - 3.5
Step-by-step explanation:
Rewrite the equation by completing the square.
4x2 + 28x + 49 = 0
Completing the square method :
Divide through by the Coefficient of x^2
x^2 + 7x + (49/4) = 0
a = 1, b = 7, c = 49/4
Move c to the right side of the equation
x^2 + 7x = - 49/4
Complete the square on the left hand side by squaring its half of the x term
(7/2)^2 = (49/4)
Add the output to both sides of the equation
x^2 + 7x + (49/4) = - (49/4) + (49/4)
(x + 7/2)^2 = 0
Square root of both sides
x + 7/2 = 0
x = - 7/2
x = - 3.5
Answer:
x = - 3.5
Step-by-step explanation:
cot (–270°) = 1
cot (–270°) = –1
cot (–270°) = 0
undefined
Answers
Answer:
cot(-270) = 0
Step-by-step explanation:
given cot ( -270)
In trigonometry function we will use cot ( -x) = -cotx
so cot (-270) = - cot270
trigonometry table
II quadrant I quadrant ( All positive)
sin θ 90+θ 90 -θ
cosec θ 180-θ 360+θ
third quadrant fourth quadrant
tan θ 180+θ cos θ 270+θ
cot θ 270 - θ sec θ 360-θ
Given
cot (-270) = -cot ( 270)
= - cot ( 180 + 90) (third quadrant above table)
= -cot 90 =0 ( cot θ positive in third quadrant
Final answer:-
cot(-270) =0
Final answer:
The value of cot(−270°) is undefined because it involves a division by zero, as its calculation is based on the cosine and sine values at −270° on the unit circle, which are 0 and 1, respectively.
Explanation:
To find the value of cot (−270°), we need to understand where −270° places us on the unit circle. A full circle is 360°, so starting at the positive x-axis and moving clockwise (since the angle is negative), we move 270° to end up at the positive y-axis. The cotangent function is the ratio of the adjacent side to the opposite side in a right triangle, or the cosine divided by the sine.
At −270° (or 270° in the positive, counter-clockwise direction), the coordinate on the unit circle is (0, 1). The sine of −270° is the y-coordinate (which is 1), and the cosine of −270° is the x-coordinate (which is 0). Therefore, cot (−270°) = cos (−270°) / sin (−270°) = 0/1. Since division by zero is undefined, cot (−270°) is undefined.
Learn more about Cotangent Function here:
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a. Her uncle leaves her 20 thousand pounds
c. She write a book that is published
b. Parent's from the school reward her for her work
Please select the best answer from the choices provided
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A: Her uncle leaves her 20,000 pounds
Her uncle leaves her 20 thousand pounds yet she gives 15 thousand pounds to her cousins the Rivers.
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your distance from tree is bottom leg
height of tree is height leg
a^2+b^2=c^2
a and b ar legs,
c=hypotnuse=distance from head to treee
50^2+120^2=c^2
2500+14400=c^2
16900=c^2
sqrt both sides
130=c^2
you are 130 feet away
How many time should the graph of this function intersect at the x-axis?
A. 3
B. 2
C. 1
D. 0
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Δ=8²-4*7*(-6)=232>0 thus 2 roots
Answer B
Answers
If you choose x = 0, then we have 4 = Q(0)*0 + a*0 + b, therefore b = 4.
If we choose x = -3, then we have:
The remainder is: 4x+4.
Green eyes.