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3 years ago

Amaya is reviewing her checking account statement from the bank. Her starting balance and transactions are listed.

Mathematics

1 answer:

shepuryov [24]3 years ago

5 0

Answer:

376.81

Step-by-step explanation: 376.81

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(cos A + cos b)^2 + (sin A + sin B)^2=?

emmasim [6.3K]

First, we expand the equation:

$cos^{2}A+2cosAcosB+ cos^{2}B+sin^{2}A+2sinAsinB+sin^{2}B$

Then, we combine certain terms in order to simplify them using trigonometry identities.

$cos^{2}A+sin^{2}A+cos^{2}B+sin^{2}B+2cosAcosB+2sinAsinB$

Note these identities:
Pythagoran relation: $cos^{2}A+sin^{2}A = cos^{2}B+sin^{2}B=1$
Sum and Difference Formula/Identities: $cos(A-B) = cosAcosB+sinAsinB$

Thus, if we apply these identities, the simplified equation would be:
$2(cos(A-B))+2$

Simplying further, the answer would be

$2[cos(A-B)+1]$

6 0

3 years ago

Mhanifa please help with this I want to pass! I will mark brainliest! I will report random answers

vlada-n [284]

Answer:

Questions 1 and 3 already answered

<u>Angles 1 and 3 are corresponding angles and therefore have same value:</u>

4x = 112
x = 112/4
x = 28°

4 0

3 years ago

Explain what the solution to a system of equations is:

WINSTONCH [101]

A solution to a system of equations is a set of values for the variable that satisfy all the equations simultaneously. In order to solve a system of equations, one must find all the sets of values of the variables that constitutes solutions of the system.

3 0

3 years ago

Pat finds that the length of a ceiling beam is 114 inches what is the length of the beam in feet.

Sidana [21]

Answer:

farted farted fartedfarted

3 0

3 years ago

Read 2 more answers

Help I’m confused big points to who can solve this

spin [16.1K]

Answer:

n = 2

Step-by-step explanation:

Given nx + y = 4, if we rearrange in slope-intercept form: y = -nx + 4

This means that the y-intercept is 4. Point "A" is the y-intercept, which would make OA = 4, and OB = 1/2(4) = 2.

We can now solve for n. The slope here is "-n", also represented by rise/run or OA/-OB = 4/-2 = -2.

-n = -2,

n = 2

6 0

3 years ago