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Sedaia [141]
3 years ago
13

Cos130° = _____ -cos50° cos50° cos(-50°)

Mathematics
2 answers:
klemol [59]3 years ago
6 0

Answer:

cos(-50°)

Step-by-step explanation:

Alinara [238K]3 years ago
6 0

Answer:

-cos50

Step-by-step explanation:

cos 130

cos pi-50

-cos 50

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If MO = 7x - 4, and NO = 6x, what is the length of line MN?
Gennadij [26K]

Answer:

13x-4

Step-by-step explanation:

8 0
3 years ago
PLS HELP QUICK <br> Find the length of side x in simplest radical form with a rational denominator
Alja [10]

Answer:

x= \sqrt{6}

Step-by-step explanation:

you might need a calculator to get the answer but since it is a right triangle the legs of the triangle in this case x and the\sqrt{6} are the same length

3 0
3 years ago
Work out the answers to:<br>a) 7 + (-4)<br>b) (-6) + (-3)<br>c) 2 -(-6)<br>d) (-8) - (-13)​
frosja888 [35]

Answer:

a) 7 + (-4) = 3

b) (-6) + (-3) = -9

c) 2 -(-6) = 8

d) (-8) - (-13) = 5

Step-by-step explanation:

a) 7 + (-4)

= 7 + (-4)

= 3

b) (-6) + (-3)

= -6 - 3

= -9

c) 2 - (-6)

= 2 + 6

= 8

d) (-8) - (-13)

= -8 + 13

= 5

8 0
3 years ago
2x/x-3 - 6/x-3 . I need a step by step explanation , please
Harman [31]
When adding/subtracting fractions you need a common denominator, but you already have one, which is x-3.  So in general:

a/c-b/c=(a-b)/c so you just have:

(2x-6)/(x-3)  now if you factor 2 from the numerator

2(x-3)/(x-3)  the (x-3)s cancel out leaving

2

However!  Note that division by zero is undefined, so x cannot equal 3.  (because both original fractions had denominators of x-3)

What this all means is that that expression will equal 2 for all real values of x other than 3.
8 0
3 years ago
Select the correct answer.
asambeis [7]

Answer:

y=3x+4

Step-by-step explanation:

The equation of the straight line that passes through (-3,-5) with slope 3 can be found using

y = mx + b

where m=3 is the slope .

We substitute the slope to get:

y = 3x + b

We substitute the point to find b.

- 5 = 3( - 3) + b \\  - 5 =  - 9 + b \\ b =  - 5 + 9 = 4

The equation of the straight line is:

y = 3x + 4

3 0
3 years ago
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