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Elan Coil [88]
3 years ago
6

Find (fog)(x) and (gof)(x) f(x) = 8x-5, g(x) = 10 - 2xhelp please ​

Mathematics
1 answer:
igomit [66]3 years ago
8 0

Answer:

(fog)(x) = f( \: g(x) \: ) \\  = 8(10 - 2x) - 5 \\  = 80 - 16x - 5 \\  =  - 16x + 75

(gof)(x) = g( \: f(x) \: ) \\  = 10 - 2(8x - 5) \\  = 10 - 16x + 10 \\  =  - 16x + 20

I hope I helped you^_^

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2z - 6 = 2(2 + 2) - 10
Blababa [14]

Answer:

z=2

Step-by-step explanation:

2z-6=2(2+2)-10  Distribute.

2z-6=4+4-10      Combine like terms.

2z-6=-2              Add 6 on both sides.

   <u>+6 +6</u>

2z=4                   Divide by 2 on both sides.

<u>/2 /2</u>

z=2

Hope this helps! Have a great day ^^

6 0
3 years ago
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8 0
3 years ago
11. D'(2.9) is the image of D after a reflection
algol [13]

Answer:

D(- 2, 9 )

Step-by-step explanation:

Under a reflection in the y- axis

a pont (x, y ) → (- x, y )

Given D'(2, 9 ) is the image of D, then

D(- 2, 9 ) ← are the original coordinates

Since D(- 2, 9 ) → D'(2, 9 )

4 0
3 years ago
What is the approximate angle measure for angle W in the triangle below?
Artyom0805 [142]
In this case we know the three sides of the triangle, then this is a SSS triangle (Side Side Side). To solve this case, first we must use the Law of Cosines, applied to the opposite side to the angle we want to find.
We want to find angle W, and its opposite side is XV, then we apply the Law of Cosines to the side XV:
XV^2=XW^2+WV^2-2(XW)(WV)cos W
Replacing the known values:
116^2=96^2+89^2-2(96)(89)cos W
Solving for W
13,456=9,216+7,921-17,088 cos W
13,456=17,137-17,088 cos W
13,456-17,137=17,137-17,088 cos W-17,137
-3,681=-17,088 cos W
(-3,681)/(-17,088)=(-17,088 cos W)/(-17,088)
0.215414326=cos W
cos W = 0.215414326

Solving for W:
W= cos^(-1) 0.215414326
Using the calculator:
W=77.56016397°
Rounded to one decimal place:
W=77.6°

Answer: Third option 77.6°
3 0
3 years ago
What is the measure of the angle fgb? Can someone please help asap ill mark brainlist!!!
ddd [48]

Answer:

The measure is 145

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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