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Dafna1 [17]
2 years ago
14

What is Cos(180) ? I started this in precal and need help with it still

Mathematics
1 answer:
scoundrel [369]2 years ago
6 0

Answer:

The value of cos 180 is equal to -1

byjuscom

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Line z has a slope of 2.5 and goes through point (4, 13). Which equation best represents line z?
AnnyKZ [126]

Answer:

y - 13 = (5/2)(x - 4)

Step-by-step explanation:

Here we know the slope and one point on the line.  Use the point-slope formula:

y - k = m(x - h).

Substituting 13 for k, 4 for x and 2.5 for m, we get:

y - 13 = (5/2)(x - 4)

3 0
3 years ago
3. Factor.
sleet_krkn [62]
It seems that some the work is already here, but I'd be glad to!! So for #3 which is 9x^2+15x, we can factor out both a 3 and an x (3x) so we know that 3x * 3x =9x^2 and 3x * 5 = 15x so once we take the 3x out of the equation, we are left with 3x(3x+5) and that's as far as you can factor.
For #4, we see that the common factor is 10m because 10m * 2n = 20mn and 10m * 3 = 30m so once we take 10m out of the original, it becomes 10m(2n-3)
For #5, this one the common factor is 4xy because 4xy * 2xy=8x^2y^2 and 4xy*x= 4x^2y and 4xy*3=12xy so once we take the 4xy out of the equation, it becomes 4xy(2xy-x-3)
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5 0
3 years ago
Use complete sentences to describe why Set A = { X | X is an even whole number between 0 and 2} = ∅
RoseWind [281]

Consider the Set A = {X | X is an even whole number between 0 and 2 } = \Phi.

Since, whole numbers are the set of numbers starting from zero upto infinity.

Even numbers are the numbers which are exactly divisible by '2'.

So, we have to find the even whole number between 0 and 2.

Since, only '1' is a whole number between 0 and 2 which is not an even number as '1' is not divisible by '2'.

Therefore, there is no even whole number between 0 and 2.

So, this set is empty.

Therefore, A = { X | X is an even whole number between 0 and 2} =  \Phi

3 0
2 years ago
Read 2 more answers
Richard earns 2700 a month. He received a 3% raise. What is Richards new annual salary
elena-14-01-66 [18.8K]

2700 \times 103\% = 2781 \: (monthly) \\ 2781 \times 12 = 33372 \: (annual)
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Hope this helps.

- Max
7 0
3 years ago
A 40-meter length of cable is cut into pieces that measure 1.25 meters each. Into how many pieces is the cable cut?
Alla [95]

Answer:

32

Step-by-step explanation:

40 / 1.25=32

3 0
3 years ago
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