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tresset_1 [31]
2 years ago
12

Alexander uses cupric chloride to etch circuit boards. He recorded the room temperature, in °C, and the etching

Mathematics
1 answer:
fenix001 [56]2 years ago
8 0
The answer to this message was because
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If the length of a netball court is 30.5m what scale has been used on this diagram?
aleksklad [387]
Provide the measurements of the court in the book, please.
8 0
3 years ago
Solve the following equation for 0° ≤ θ < 360°. Use the "^" key on the keyboard to indicate an exponent. For example, sin2x w
Margarita [4]

Answer: 2sin^2x+sin2x+cos2x=0 ..... (1).

By using the trigonometric identities below :

sin2x=2sinxcosx

cos2x=cos^2x-sin^2x

We substitute the trigonometric identities into (1).

2sin^2x+2sinxcosx+cos^2x-sin^2x=0

By combining like terms .

sin^2x+2sinxcosx+cos^2x=0.....(2)

The equation (2) is equivalent to the following expression (3).

(sinx+cosx)(sinx+cosx)=0 .....(3).

sinx+cosx=0

cosx=-sinx

divide both sides by cosx

1=-sinx/cosx

-1=sinx/cosx

sinx/cosx=tanx

substitute

-1=tanx

tanx=-1

tangent is negative in 2nd and 4th quadrants

tan135º=-1 (one answer)

tan315º=-1 (second answer)

Step-by-step explanation:

Please refer to the trigonometric identities used and explained above .

5 0
2 years ago
1/2(4x-2)-2/3(6x+9) greater or equal to 4
Simora [160]
1/2(4x-2)-2/3(6x+9)
(2x-1)-(4x+6)
2x-1-4x+62x-4x-1+6
-2x+5=2.5
So I believe that it is greater than 4
8 0
3 years ago
The perimeter of a 14 ft , 8 ft rectangle
lara [203]

Answer:44 ft

Step-by-step explanation:

P=2(l+w)

P=2(14+8)

P=2(22)

P=44

4 0
3 years ago
Read 2 more answers
Chad has a rope that is 25 yards long. How many pieces of rope measuring of a yard can he divide his rope into?
Angelina_Jolie [31]

He can divide it into 8 pieces plus an extra foot

8 0
3 years ago
Read 2 more answers
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