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3 years ago

No Need to show work.

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

3 0

Answer:

Step-by-step explanation:

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Which of the following is a quadrantal angle

Setler [38]

Question:

Which of the following is a quadrantal angle?

a) π/2 b) π/3 c) 2π/3 D) 4π/5

Answer:

$(a)\ \frac{\pi}{2}$

Step-by-step explanation:

Required

Which of a to d is a quadrantal angle

An angle is said to be quadrantal if and only if the angle has its terminal side on the x or y axis.

Such angles (in degrees) are: 90, 180, 270, etc.

So, we have:

$(a)\ \frac{\pi}{2}$

[Convert to degrees]

$\frac{\pi}{2} = \frac{180}{2}$

$\frac{\pi}{2} = 90$

Hence:

$(a)\ \frac{\pi}{2}$ is a quadrantal angle

The other options are not.

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3 years ago

Please help i am having trouble understanding

STatiana [176]

When x = -2, g(-2) = 4
and
when x = -2, f(-) = 4

answer
f(-2) = g(-2)

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3 years ago

Which matrix is equal to C-B?

kherson [118]

7. -20
10 3
6 3

Subtract each remember 4-- -6= 10

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3 years ago

4 to the narest whol number

mote1985 [20]

I think 4 would be the ansswer actually

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3 years ago

A quadratic equation is shown below: x2 + 5x + 4 = 0 Part A: Describe the solution(s) to the equation by just determining radica

AysviL [449]

Part A
x² + 5x + 4 = 0
x = -(5) +/- √((5)² - 4(1)(4))
 2(1)
x = -5 +/- √(25 - 16)
 2
x = -5 +/- √(9)
 2
x = -5 +/- 3
 2
x = -5 + 3 U x = -5 - 3
 2 2
x = -2 x = -8
 2 2
x = -1 x = -4

Part B
4x² - 12x + 5 = 0
x = -(-12) +/- √((-12)² - 4(4)(5))
 2(4)
x = 12 +/- √(144 - 80)
 8
x = 12 +/- √(64)
 8
x = 12 +/- 8
 8
x = 3 +/- 2
 2
x = 3 + 2 U x = 3 - 2
 2 2
x = 5 x = 1
 2 2
x = 2.5 x = 0.5

Part C
2x² - 10x + 3 = 0
x = -(-10) +/- √((-10)² - 4(2)(3))
 2(2)
x = 10 +/- √(100 - 24)
 4
x = 10 +/- √(76)
 4
x = 10 +/- 2√(19)
 4
x = 5 +/- √(19)
 2
x = 2.5 + 0.5√(19)
x = 2.5 + 0.5√(19) U x = 2.5 - 0.5√(19)

5 0

3 years ago