2 years ago

Which expression is the factored form of −4.5n+3

Mathematics

1 answer:

Andrei [34K]2 years ago

5 0

−3(1.5n−1) is correct

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Find the exact values of cos 3 pi/4 radians sin 3 pi/4 radians.

Liula [17]

If you consult the unit circle, you will see that:

$cos(\frac{3\pi}{4}) = -\frac{\sqrt{2}}{2}\\\\sin(\frac{3\pi}{4}) = \frac{\sqrt{2}}{2}$

3pi/4 in degrees is 3pi/4 * 180/pi = 3/4 * 180 = 135 degrees. And please refer to the attachment to how you can obtain the values above.

Now, lets multiply it together.

$-\frac{\sqrt{2}}{2} \cdot \frac{\sqrt{2}}{2} =\\\\-\frac{2}{4} =\\\\ \boxed{\bf{-\frac{1}{2}}}$

So, cos(3pi/4)sin(3pi/4) = -1/2

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3 years ago

please help, i will mark brainliest. i will report spam answers

OverLord2011 [107]

Answer:

p = 26

Q = 79

R =75

Step-by-step explanation:

because MNO is same as PQR (direction wise)

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2 years ago

What is the value of the function f(x)= -x+4 when x= -2? A) 6 B) -6 C) -2 D) 2

schepotkina [342]

F(x) = -x + 4

Substitute x = -2 to the equation:

f(-2) = -(-2) + 4 = 2 + 4 = 6

Answer: A) 6

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2 years ago

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Find all natural numbers n such that 1+3+5+7+...+(2n-1) sum is divisible by 4

Ierofanga [76]

n ∈ natural even numbers

Step-by-step explanation:

1 + 3 + 5 + 7 + … + (2n-1)

a = 1
b = 2
Uₙ = 2n - 1

sum of the first n terms :

Sₙ = n/2(a + Uₙ)

Sₙ = n/2(1 + 2n - 1)

Sₙ = n/2(2n)

Sₙ = n²

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2 years ago

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What is the slope and y-intercept of this equation? y = 5x

denis-greek [22]

Answer:

Slope- 5 y-int- (0,0)

Step-by-step explanation:

y=mx+b, where m=slope and b=y-int. m=5, and we don't see a b, so it must be 0.

8 0

3 years ago