All categories

3 years ago

HELP PLS QUICK!MIGHT GIVE BRAINLIST IF TWO PEOPLE ANSWER!

Mathematics

1 answer:

WITCHER [35]3 years ago

4 0

Answer: A=bh to find the area of parallelograms.

Step-by-step explanation:

You might be interested in

Lowering powers write in terms of first power of cosine. Cos^6

yaroslaw [1]

The main identity you need is the double angle one for cosine:

$\cos^2x=\dfrac{1+\cos2x}2$

We get

$\cos^6x=(\cos^2x)^3=\left(\dfrac{1+\cos2x}2\right)^3=\dfrac{(1+\cos2x)^3}8$

Expand the numerator to apply the identity again:

$\cos^6x=\dfrac{1+3\cos2x+3\cos^22x+\cos^32x}8$

$\cos^6x=\dfrac{1+3\cos2x+3\left(\frac{1+\cos2(2x)}2\right)+\cos2x\left(\frac{1+\cos2(2x)}2\right)}8$

$\cos^6x=\dfrac{1+3\cos2x+\frac32+\frac32\cos4x+\frac12\cos2x(1+\cos4x)}8$

$\cos^6x=\dfrac5{16}+\dfrac7{16}\cos2x+\dfrac3{16}\cos4x+\dfrac1{16}\cos2x\cos4x$

Finally, make use of the product identity for cosine:

$\cos2x\cos4x=\dfrac{\cos6x+\cos2x}2$

so that ultimately,

$\cos^6x=\dfrac5{16}+\dfrac7{16}\cos2x+\dfrac3{16}\cos4x+\dfrac1{32}\cos2x+\dfrac1{32}\cos6x$

$\cos^6x=\dfrac5{16}+\dfrac{15}{32}\cos2x+\dfrac3{16}\cos4x+\dfrac1{32}\cos6x$

4 0

4 years ago

Please help with math vocabulary

Studentka2010 [4]

I’ll help, but it is difficult to see the terms on the paper!

3 0

3 years ago

Read 2 more answers

Use algebraic rules of equations to predict the solution type to the system of equations. Include all of your work for full cred

svp [43]

Answer:

The system has infinite solutions

Step-by-step explanation:

For a system of two linear equations it is always true that if one equation is a linear combination of another, then the system will have infinite solutions.

Suppose we have the following system:

$ax + by = c\\dx + hy = f$

If there is a number n for which it is fulfilled that

$= n *$

Then the system has infinite solutions.

In this case the system is:

$x + 2y=10\\3x+6y =30$

Observe that:

$= \frac{1}{3}*$

Then $n =\frac{1}{3}$

The system has infinite solutions

5 0

3 years ago

Plz I need help with only the perimeter one

Tcecarenko [31]

Answer:

I believe the answer is 25.3

5 0

3 years ago

Read 2 more answers

Help me plss!!!!!!!!!!

Westkost [7]

Answer:

You just take the product of 0.2 and 0.6. The answer is 0.12 miles.

6 0

3 years ago

Read 2 more answers