3 years ago

HELP ME IF YOU ARE Not Sure don't answer please show steps and work

Mathematics

1 answer:

Yuri [45]3 years ago

3 0

12Y+6

I think is this unwser.

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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

Show how to work the division problem 47 divided by 8 please

Dvinal [7]

Answer:

Step-by-step explanation:

47 divided by 8

= 5.875

hope this helps

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2 years ago

Describing Repeated Roots on a Graph

Nimfa-mama [501]

Answer:

1.Crosses

2.Touches

Step-by-step explanation:

...

4 0

3 years ago

E is route 30<br>Please help mee

Crazy boy [7]

Answer:

Options A, D and E

Step-by-step explanation:

If a number in square root can't be solved Or square root of the number can't be removed then it is a surd.

Option A

√17 = Surd [Can't be simplified further]

Option B

√36 = 6

Not a surd

Option C

√100 = 10

Not a surd

Option D

√15 = Surd

Option E

√30 = Surd

Therefore, Options A, D and E are the surd.

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3 years ago

In 24 days Elmo will celebrate his birthday he will be 12 years old how many weeks until his birthday????

koban [17]

3 weeks and 3 days is the answer. This is bc 21/7 is 3. And the left over is 3

7 0

3 years ago

Read 2 more answers