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2 years ago

Helpppppppppppppppppppppppppppppppp[ppppppppp

Mathematics

1 answer:

rosijanka [135]2 years ago

4 0

-2.5>-1.5 because it’s the only one that makes sense (there’s a more logical explanation but i really don’t feel like explaining it unless you need me to :) )

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Please help I will give brainlyiest fast please help fast

lana [24]

Answer:

A. 49.

Step-by-step explanation:

Given equation:

-11 2/3 * (-4 1/5)

Simplify, then solve:

-11 2/3 * (-4 1/5)
= -35/3 * (-21/5)
= $\frac{-35 * (-21)}{3 * 5}$
= 735/15
= 49.

Your answer is A. 49.

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2 years ago

Solve the equation for exact solutions over the interval [0, 2π).

quester [9]

Answer:

$\displaystyle x=\left\{0, \frac{2\pi}{3}, \frac{4\pi}{3}\right\}$

Step-by-step explanation:

We want to solve the equation:

$-2\cos^2(x)=-\cos(x)-1$

Over the interval [0, 2π).

First, notice that this is in quadratic form. So, to make things simpler, we can let u = cos(x). Substitute:

$-2u^2=-u-1$

Rearrange:

$2u^2-u-1=0$

Factor:

$(2u+1)(u-1)=0$

Zero Product Property:

$2u+1=0\text{ or } u-1=0$

Solve for each case:

$\displaystyle u=-\frac{1}{2}\text{ or } u=1$

Back-substitute:

$\displaystyle \cos(x)=-\frac{1}{2}\text{ or } \cos(x)=1$

Using the unit circle:

$\displaystyle x=\left\{0, \frac{2\pi}{3}, \frac{4\pi}{3}\right\}$

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2 years ago

Solve equation\ PLS HELP!!!

yuradex [85]

Answer:

$\frac{dy}{dx} = \frac{ - x + 2}{y - 6}$

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2 years ago

Just a little bit of math hw

blsea [12.9K]

Answer:

Put 0 in the box.

Step-by-step explanation:

The value x = 0 if replaced in the given equation will always make the denominator zero.

Best Regards!

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3 years ago

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Y+7x=9 Find the coordinate to complete

harkovskaia [24]

Multiple coordinates work. If you turn this equation into y=mx+b form it is easier. That would be y=-7x+9. A couple coordinates that work are (0,9) (1,2) and (2, -5)

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2 years ago

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