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Andreyy89
3 years ago
5

Which expression is equal to 4(2+3)? A. 8 + 3 B. 4 + 5 C. 2 + 12 D. 8 + 12

Mathematics
2 answers:
Blababa [14]3 years ago
4 0
First, answer the problem in the parentheses. 2 + 3 is 5. 5 x 4 is 20. Now, we are going to find the question that has an answer of 20. A = 11 so it cant be that one. B is 9 so not that one, either. C is 14 so not that one, but D = 20 so we have found the answer. D is the correct answer.
snow_tiger [21]3 years ago
4 0
D. 8 + 12, is the answer
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Find the value of all trigonometric functions of 135°
Vera_Pavlovna [14]

Answer:

sin (- 135°)= – sin 135°= – sin (1 × 90°+ 45°) = – cos 45° = – 1√2

cos (- 135°)= cos 135°= cos (1 × 90°+ 45°) = – sin 45°= – 1√2

tan (- 135°) = – tan 135° = – tan ( 1 × 90° + 45°) = – (- cot 45°) = 1

csc (- 135°)= – csc 135°= – csc (1 × 90°+ 45°)= – sec 45° = – √2

sec (- 135°)= sec 135°= sec (1 × 90°+ 45°)= – csc 45°= – √2

cot (- 135°) = – cot 135° = – cot ( 1 × 90° + 45°) = – (-tan 45°) = 1

Step-by-step explanation:

hope this helps

5 0
1 year ago
Simplify the radical expression<img src="https://tex.z-dn.net/?f=%5Csqrt128" id="TexFormula1" title="\sqrt128" alt="\sqrt128" al
Rudiy27

Answer: 8√2 decimal form 11.3

Step-by-step explanation: √128=√16×√8→4×√4×√2=8√2 . 11.3 in decimal form

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3 years ago
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Ilya [14]
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5 0
3 years ago
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Roman55 [17]

Answer:

78.54 so B

Step-by-step explanation:

4 0
3 years ago
What is the simplest form for 30/42? thanks!?
andre [41]
It would be: 30/42 = 15/21 = 5/7

In short, Your Answer would be 5/7

Hope this helps!
7 0
3 years ago
Read 2 more answers
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