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2 years ago

What number has four factors

Mathematics

1 answer:

BARSIC [14]2 years ago

4 0

The answer is three look it up

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4cos^2(x)-7cos(x)+3 Please help and explain how you did it :)

dangina [55]

I assume you're asked to solve

4 cos²(x) - 7 cos(x) + 3 = 0

Factor the left side:

(4 cos(x) - 3) (cos(x) - 1) = 0

Then either

4 cos(x) - 3 = 0 or cos(x) - 1 = 0

cos(x) = 3/4 or cos(x) = 1

From the first case, we get

x = cos⁻¹(3/4) + 2nπ or x = -cos⁻¹(3/4) + 2nπ

and from the second,

x = nπ

where n is any integer.

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2 years ago

If 160 increased by 40 percent what is the resulting number

ANEK [815]

The resulting number would be 120

5 0

3 years ago

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A pine cone drops from a tree branch that is 36 feet above the ground. The function h = –16t2 + 36 is used. If the height h of t

scoray [572]

Notice that the height of the pine cone when it hits the ground is zero. So, to find the tame it takes for the pine cone to hit the ground, we just need to replace the height, $h$ , with 0 in the function, and solve for time $t$ :
$h=-16t^2+36$
$0=-16t^2+36$
$-36=-16t^2$
$t^2= \frac{-36}{-16}$
$t^2= \frac{9}{4}$
$t=(+/-) \sqrt{ \frac{9}{4} }$
$t=(+/-) \frac{3}{2}$
$t=(+/-)1.5$
Since time cannot be negative, the solution is $t=1.5$ seconds.

Since 1.5 second is significantly less than 2 seconds, we can conclude that 2 seconds is not a reasonable answer to this model.

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3 years ago

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Find the value of each expression. Show your work.

luda_lava [24]

Answer:

A) 1.44

B) 25 - 3x^4

C) 3

Step-by-step explanation:

Sadly, I cannot show work, but those are the answers

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2 years ago

What does 64 divide [4x(27-52)] btw the two is supposed to be tiny

Nutka1998 [239]

The answer should be 8 over 11x

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3 years ago