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kap26 [50]
3 years ago
13

Find 30% of 70 please help

Mathematics
2 answers:
Anna [14]3 years ago
8 0

Answer:

21

Step-by-step explanation:

HA GODE

tekilochka [14]3 years ago
3 0

Answer:

21

Step-by-step explanation:

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1.309 is the measure of 75
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Prove identity trigonometric equation
irina [24]

Explanation:

The given equation is False, so cannot be proven to be true.

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Perhaps you want to prove ...

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This is one way to show it:

  2\tan{x}=\cos{(x)}\dfrac{(\csc{(x)}+1)+(\csc{(x)}-1)}{(\csc{(x)}-1)(\csc{(x)}+1)}\\\\=\cos{(x)}\dfrac{2\csc{(x)}}{\csc{(x)}^2-1}=2\cos{(x)}\dfrac{\csc{x}}{\cot{(x)}^2}=2\dfrac{\cos{(x)}\sin{(x)}^2}{\cos{(x)}^2\sin{(x)}}\\\\=2\dfrac{\sin{x}}{\cos{x}}\\\\2\tan{x}=2\tan{x}\qquad\text{QED}

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We have used the identities ...

  csc = 1/sin

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4 0
3 years ago
What is the value of j in the equation √ j + √ j + 14 = 3√ j + 10?
bulgar [2K]
J = 16 solve for j by simplifying both sides of the equation, then isolating the variable
3 0
4 years ago
You are riding a train. Your carry-on bag can weigh no more than 50 pounds. Your bag weighs 38 pounds.
Sladkaya [172]

Answer:

Let the additional weight that can be added be = x

Current weight of the bag = 38 pounds

Total weight can be = 50 pounds

The equation becomes:

38+x < or equal 50

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Hence, a weight of 12 pounds cab be added to the current wight.

6 0
3 years ago
Look at the picture
ValentinkaMS [17]

Answer: 54

Step-by-step explanation:

3 times the square of -3 plus -5 times -3 plus 12

3 times 9 + 15 + 12

27+15+12=

54

7 0
3 years ago
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