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liubo4ka [24]
3 years ago
13

Please help asap!!!!

Mathematics
1 answer:
AleksandrR [38]3 years ago
8 0

Answer:

justin biberis black

Step-by-step explanation:

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Given that cos 75 = X, show that cos 105 = −X
s344n2d4d5 [400]

Step-by-step explanation:

cos(90) = 0

around this point the cos function "mirrors" with opposite signs. cos(<90) is positive and cos(>90) is negative.

but |cos(90-a)| = |cos(90+a)| for 0 <= a <= 90

75 = 90 - 15

105 = 90 + 15

so, a = 15

and because of

|cos(90-a)| = |cos(90+a)| for 0 <= a <= 90

cos (90-15) = cos(75) = -cos(90+15) = -cos(105)

7 0
3 years ago
Students
Leto [7]

Answer:

Distribute the 3 to 4y and 8

Step-by-step explanation:

7 0
3 years ago
Help pls i don't know how to do it
Marina CMI [18]

Answer:

y=5x-8

Step-by-step explanation:

Slope=m=(7-3)/(3-2)

y=5x+b=>2=5*2+c=>c=-8

So y=5x-8

7 0
3 years ago
Read 2 more answers
For the given functions f and g find f•g and state it’s domain<br> f(x) = 3x - 6; g(x) = 8x +4
o-na [289]

f.g and its domain is 24x²-36x-24; all real numbers.

Given, f(x) = 3x - 6; g(x) = 8x +4.

We need to find the value of f.g

<h3>What is a domain?</h3>

The domain of a function; In mathematics, the domain of a function is the set of inputs accepted by the function.

Now, (f.g)(x)=(3x-6)(8x+4)

=24x²-48x+12x-24

=24x²-36x-24

Therefore, f.g and its domain is 24x²-36x-24; all real numbers.

To learn more about the domain of a function visit:

brainly.com/question/13113489.

#SPJ1

6 0
2 years ago
What number should be added to both sides of the following equation to solve for g?
VLD [36.1K]

Answer:

43 1/3

Step-by-step explanation: Not sure what that second part it but for that equation it is 43 1/3 because you need to isolate the variable by adding the 18 1/3 to the 25 and whatever that equals is your answer so I added

g-18 1/3=25

18 1/3+25

g= 43 1/3

^ see it says g= ___ and that is what g equals

6 0
3 years ago
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