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ValentinkaMS [17]

3 years ago

14

28x3 + 21x2 + 16x + 12 = 0

2 answers:

Rina8888 [55]3 years ago

7 0

Answer: ( sorry if I’m wrong) 154

Step-by-step explanation:

Tomtit [17]3 years ago

4 0

Answer:

53

Step-by-step explanation:

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Verify<br> (2cos2x)/(sin2x) - cotx - tanx = -2tanx

lana66690 [7]

Remember:

$\boxed{sin(2x)=2.sinx.cosx}\\
\\
and\\
\\
\boxed{cos(2x)=cos^2x-sin^2x}$

$\frac{2cos2x}{sin2x}-cotx-tanx=\\
\\
\frac{2(cos^2x-sin^2x)}{2sinx.cosx}-\frac{cosx}{sinx}-\frac{sinx}{cosx}=\\
\\
\frac{cos^2x-sin^2x}{sinx.cosx}-\frac{cosx}{sinx}-\frac{sinx}{cosx}=\\
\\
\frac{cos^2x-sin^2x-cos^2x-sin^2x}{sinx.cosx}=\\
\\
\frac{-2sin^2x}{sinx.cosx}=\\
\\
\frac{-2sinx}{cosx}=-2.tanx$

4 0

3 years ago

Anthony has 115 books in his room he is storing them in boxes each box holds 17 books how many boxes does Anthony mean

Vadim26 [7]

Answer:

7

Step-by-step explanation:

115/17=6.7..... Round up to 7.

7 boxes should be the answer

5 0

3 years ago

My GUY HELP ME!!!!!!!!!!

matrenka [14]

A)
Area: 1,018
Circumference: 113
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Hope that helped
Sorry if it’s wrong

5 0

3 years ago

Read 2 more answers

How many oz of nuts are there in a box that holds 3.2 pounds

melisa1 [442]

Answer:

51.2 oz

Step-by-step explanation:

Stoichiometry

3.2 lb x 16 oz

÷ 1 lb =51.2 oz

3 0

4 years ago

A bag contains 5 red apples and 4 yellow apples. 4 apples are selected at random. Find the probability of selecting 2 red apples

Oksi-84 [34.3K]

Assuming that the apples are not tossed back into the bag after drawing them.

Total of 9 apples.

1st draw yell, 4/9

2nd draw yell, 3/8

3rd draw red, 5/7

4th draw red, 4/6

$\frac{4}{9} * \frac{3}{8} * \frac{5}{7} * \frac{4}{6} = \frac{240}{3024} \\ \\ = \frac{5}{63}$

7 0

4 years ago