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2 years ago

Math (not too hard answer asap) :)

Mathematics

1 answer:

Katena32 [7]2 years ago

3 0

Answer:

A and C

Step-by-step explanation:

A. 134 is the mode, correct, repeated 5 times
B. 111 is appears 3 times, incorrect , this number is not part of data set
C. There are more data values between 130 and 139, correct, there are 8 of them
D. There are 20 data values, incorrect , there are 23

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1 year ago

How to solve this :') please help

blsea [12.9K]

Answer:

3/2

Step-by-step explanation:

sin(3π/4 - β) = sin(3π/4)cosβ - cos(3π/4)sinπ =

$\sin(\frac{3\pi}{4}-\beta)=\sin(\frac{3\pi}{4})\cos\beta-\cos\frac{3\pi}{4}\sin\beta\\=\frac{1}{\sqrt{2}}\cos\beta-(-\frac{1}{\sqrt{2}})\sin\beta\\\\=\frac{1}{\sqrt{2}}(\cos\beta +\sin\beta)\\\\\sin^2(\frac{3\pi}{4}-\beta)=\frac{1}{2}\cos\beta +\sin\beta)^2=\frac{1}{2}(\cos^2\beta +\sin^2\beta+2\sin\beta\cos\beta\\=\frac{1}{2}(1+\sin2\beta)=\frac{1}{2}(1-\frac{1}{5}) = \frac{2}{5}\\$

Use $\cot^2x=\csc^2x-1=\frac{1}{\sin^2x}-1$

$\cot^2(\frac{3\pi}{4}-\beta)=\frac{1}{\sin^2(\frac{3\pi}{4}-\beta)}-1 = \frac{1}{\frac{2}{5}}-1=\frac{5}{2}-1=\frac{3}{2}$

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1 year ago

If the area of the square is A(s) = s², find the formula for the area as a function of time, and then determine A(s(3)).

Oxana [17]

A(t) = 100t^2 + 500t + 625

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2 years ago

Read 2 more answers

Start with the number 2380.<br> Divide by 10,<br> The 8 will end up in the _____ place.

Nostrana [21]

Answer:

The 8 will end up in the ones place.

Step-by-step explanation:

If you want to divide 2380 by 10… sry gtg

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2 years ago

Here’s the other question... I also have more

Vika [28.1K]

Answer:

2 1/3!

Step-by-step explanation:

If you are subtracting fractions that both have a common denominator, think of it like this. so, if you are confused with whole numbers, why not make it improper? multiply the bottom number by the big number next to it, and add the top 2, which should give you 8/3. then subtract 1/3, which is 7/3, and if you simplify it, it should give you 1 1/3! :D

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2 years ago