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____ [38]
3 years ago
6

F(x)=8x+9 find f(6c+4)

Mathematics
1 answer:
Shtirlitz [24]3 years ago
7 0
Could you possibly put it in a picture?
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2(x+1)+3x=37 *what is x??​
irina1246 [14]

2(x+1)+3x=37

simplifythe left side:

2x +2 +3x = 37

Combine like terms:

5x +2 = 37

Subtract 2 from both sides:

5x = 35

Divide both sides by 5:

x = 7

5 0
3 years ago
Read 2 more answers
Calculate the length of ac
svlad2 [7]

Answer:

  12.1 cm

Step-by-step explanation:

Using the law of sines, we can find angle C. Then from the sum of angles, we can find angle B. The law of sines again will tell us the length AC.

  sin(C)/c = sin(A)/a

  C = arcsin((c/a)sin(A)) = arcsin(8.2/13.5·sin(81°)) ≈ 36.86°

Then angle B is ...

  B = 180° -A -C = 180° -81° -36.86° = 62.14°

and side b is ...

  b/sin(B) = a/sin(A)

  b = a·sin(B)/sin(A) = 13.5·sin(62.14°)/sin(81°) ≈ 12.0835

The length of AC is about 12.1 cm.

_____

<em>Comment on the solution</em>

The problem can also be solved using the law of cosines. The equation is ...

  13.5² = 8.2² +b² -2·8.2·b·cos(81°)

This is a quadratic in b. Its solution can be found using the quadratic formula or by completing the square.

  b = 8.2·cos(81°) +√(13.5² -8.2² +(8.2·cos(81°))²)

  b = 8.2·cos(81°) +√(13.5² -(8.2·sin(81°))²) . . . . . simplified a bit

3 0
3 years ago
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What is the answer to this question? PLZ PLZ PLZ
dusya [7]

Answer:2000

Step-by-step explanation:2500x0.2=500

2500-500=2000

8 0
3 years ago
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780 is what percent of 540?
zaharov [31]

Answer:

144.44%

Step-by-step explanation:

780/540 = 1.44444 * 100 (for each percent) = 144.44 %

4 0
2 years ago
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I need help asappppp
Minchanka [31]

Answer:

a = 11, b = 7

Step-by-step explanation:

See picture

Download pdf
6 0
2 years ago
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