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sweet [91]
2 years ago
8

What is the relationship between

Mathematics
2 answers:
ziro4ka [17]2 years ago
7 0

Answer:

0.64

Step-by-step explanation:

Sine and cosine of angles are complimentary

This means

Sin x = Cos (90-x)

Cos x = sin (90 - x)

Therefore sin 40 = 0.64

Sin 40 = cos (90 - 40)

Sin 40 = cos 50

Cos 50 = 0.64

I hope this was helpful, please mark as brainliest

Aloiza [94]2 years ago
7 0
The answer is 0.64 for this question
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One person can do a certain job in 15 minutes and another person can do the same job in 30 minutes. How many minutes will it tak
Flauer [41]

Hello! Your answer is B, 10 minutes.

Say the x = minutes taken to do the job. You can set up an equation like this to solve this.

\frac{1}{15} x + \frac{1}{30} x = 1

This is representative of the situation. The fractions each represent <u>how much each person does in a minute</u>, and when they're multiplied by x, that's <u>how much of the project they get done</u> based off of the minutes they work together on the job. Add the two together, and you get <u>how much of the project is finished in x amount of time</u>. Set it equal to 1, as you are looking for 100% completion.

Once you have this equation, find a common denominator, add, and solve.

\frac{1}{15} x + \frac{1}{30} x = 1

\frac{2}{30} x + \frac{1}{30} x = 1

\frac{3}{30}x = 1

\frac{1}{10}x = 1

x = 10

Therefore, it will take them 10 minutes to do the job together.

Hope this helps!

8 0
3 years ago
543.28 in expanded notation
seropon [69]

Answer:

500+40+3+.2+.08= 543.28

Step-by-step explanation:

5 0
2 years ago
Solve for the Simplest form
tino4ka555 [31]
How to solve:

\frac{5}{6} - \frac{3}{8}

Write all numerators above the least common denominator which is 24 in this case.
\frac{20-9}{24}

Subtract the numbers
\frac{11}{24}

Alternate form: 0.458333

The final, simplified, fraction answer is: \frac{11}{24}

7 0
3 years ago
Read 2 more answers
Describe a real-world situation that can be represented using a table and graph.
OverLord2011 [107]
Besides just using the math in everyday life, it is also used in newspapers.
8 0
2 years ago
Divide using synthetic division. ( x^4-12x^2-9)/(x+3)
Firdavs [7]

Answer:

x^3 - 3x^2 - 3x + 9 + (-36/(x+3))

OR

x^3 - 3x^2 - 3x + 9 - (36/(x+3))

Step-by-step explanation:

First set the divisor equal to 0:

x + 3 = 0

Subtract 3 from both sides

x = -3

This is what you'll divide the dividend by in synthetic division.

Take the coefficents of each term in the dividend. Do not forget the 0 placeholders:

x^4 + 0x^3 - 12x^2 + 0x -9

Coefficents: 1. 0.  -12. 0 -9.

Please see the image for the next steps.

The remainder is -36. Put the remainder over the divisor and add it to the polynomial (shown in image)

-36/(x+3)

6 0
2 years ago
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