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seraphim [82]
3 years ago
12

Penn has a board that is 8 feet long. He cuts a piece off of the board that is

Mathematics
1 answer:
Arisa [49]3 years ago
6 0
8-3 = 5 feet long.
The remaining will be 5 feet long

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What is the value of sin(-240)?
GarryVolchara [31]
Sin(-240) is in Q2 and its reference angle is 60°
Answer: \frac{ \sqrt{3} }{2}
8 0
3 years ago
What is another way to write the absolute value inequality
devlian [24]

Answer:

absolute value its written as:

| expression | > x

*> written can also be < , ≥ , or ≤

| | (two vertical lines on both sides of something) indicate absolute value

(absolute value considers the space between a number and 0;

| x | = 3

then x could be = 3 or = -3

you can also think of anything inside | | to be written as positive;

| 3 | = 3

| -3 | = 3)

you could also right, from this example: | x | > 3

our value of x could either be greater than 3, or, our x-value is negative (and only the absolute value is greater than 3, meaning that negative -x, is greater than three)

we separate these possibilities into two expressions:

x > 3         - x > 3

              · -1     · -1    {inequalities flip direction when multiply by negative}

                  x < -3

so, x > 3 and x < -3 can be combined:

x > 3  <em>or </em> x < 3

(graph of example attached)

hope this helps!!

3 0
2 years ago
the equation of a line is y=-1/2x-2. what is the equation of the line that is perpendicular to the first line and passes through
Alexxandr [17]
Perpendicular means that the slopes are negartive inverses, aka
slope1 times slope2=-1

y=mx+b
slope=m

y=-1/2x-2
slope=-1/2

we need to find negative inverse
-1/2 times what=-1
answer is 2

y=2x+b
input the point (2,-2) to find b
(x,y)
(2,-2)
-2=2(2)+b
-2=4+b
minus 4 from both sides
-6=b
y=2x-6

the equtaion is y=2x-6
8 0
3 years ago
55 miles per hour for 10 hours?
barxatty [35]

Answer:

33000

Step-by-step explanation:

you do 60 times 10 cause theres 60 minutes in an hour and then you get that answer and the times 600 by 55

7 0
3 years ago
Find the derivative of f(x) = negative 9 divided by x at x = -8.
marusya05 [52]

Answer:

f'(-8)=\frac{9}{64}

Step-by-step explanation:

Given the function

f(x)=\frac{-9}{x}

We can rewrite it as

f(x)=-9x^{-1}

Now we can apply the power rule

f'(x)=9x^{-2}

Now we can rewrite it

f'(x)=\frac{9}{x^{2} }

Now we can plug in x=-8

f'(-8)=\frac{9}{(-8)^{2} }\\f'(-8)=\frac{9}{64}

7 0
3 years ago
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