7/8(-4/5)= the answer to this question

Answers

Answer 1

Answer: $(7)/(8) * (-4)/(5)$
let's simplify the terms now
so, we are let with

$(7)/(2) * (-1)/(5)$
Now lets multiply them together

$(-7)/(10)$

hope this helped... :)

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Determine the domain of the function.f as a function of x is equal to the square root of eleven minus x.

Answer Choices:
All real numbers except 11
x > 11
All real numbers
x ≤ 11

Answers

Answer:

Option D, x ≤ 11

Step-by-step explanation:

We have to determine the domain of the function.

f(x) = $√(11-x)$

This function is defined for the positive values of ( 11 - x ) because under root of negative terms is not defined.

Therefore, domain of the given function will be ( 11 - x ) ≥ 0

x ≤ 11

Option D, x ≤ 11 is the answer.

Round 2.6 to the nearest tenth

Answers

2.6 is already rounded to the nearest tenth.

If the original answer was 2.67345, it would be rounded to 2.7.
or
if it were 2.63421; it would be 2.6

The number after a decimal; (2.6 is the tenth)

816.45 = hundred
816.45 = ten
816.45 = one
816.45 = tenth
816.45 = hundredth

Which of these is a simplified form of the equation 8y + 6 = 7 + 2y + 3y?3y = 1
8y = 6
13y = 13
5y = 13

Answers

8y+6=7+2y+3y

8y+6=7+5y

3y+6=7

3y=1

If cos θ -sin θ =1, find θ cos θ +sin θ?

Answers

$cos\theta-sin\theta=1\ \ \ \ |square\ both\ sides\n\n(cos\theta-sin\theta)^2=1\n\ncos^2\theta-2sin\theta cos\theta+sin^2\theta=1\n\n1-2sin\theta cos\theta=1\n\n-2sin\theta cos\theta=1-1\n\n-2sin\theta cos\theta=0\iff sin\theta=0\ or\ cos\theta=0\n\n\theta=k\pi\ or\ \theta=(\pi)/(2)+k\pi\ \ \ \ (k\in\mathbb{Z})$

$For\ \theta=k\pi\to cosk\pi-sink\pi=\pm1-0=\pm1\to conclusion:\theta=2k\pi\n\nFor\ \theta=(\pi)/(2)+k\pi\to cos((\pi)/(2)+k\pi)-sin((\pi)/(2)+k\pi)=0-(\pm1)=\mp1\to\n\to conclusion:\theta=(3\pi)/(2)+2k\pi\n\n============================\n\ncos\theta+sin\theta=(*)\n\nfor\ \theta=2k\pi\to(*)=1+0=1\n\nfor\ \theta=(3\pi)/(2)+2k\pi\to(*)=0-1=-1$

A square has a side length of x + 3. A regular octagon has a side length of 3x. If the polygons have the same perimeter, determine the value of x.