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vazorg [7]
3 years ago
8

This is a trignometry questionhope u will do for me i will mark brainliest..:)​

Mathematics
1 answer:
Anastasy [175]3 years ago
5 0

Step-by-step explanation:

\cos^{4} x -  \sin^{4} x

= ( \cos^{2} x + \sin^{2} x)( \cos^{2} x -  \sin^{2} x)

= (1 -  \sin^{2} x  + \sin^{2} x)( 1 - \sin^{2} x -  \sin^{2} x)

= 1 - 2\sin^{2} x

Note: I replaced all cos^2x terms using the identity

\cos^{2} x  = 1 -  \sin^{2} x

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You’re given two side lengths of 3 centimeters and 5 centimeters. Which measurement can you use for the length of the third side
bogdanovich [222]

Answer:

6 centimeters and 4 centimeters

Step-by-step explanation:

According to the Triangle Inequality, the sum of the lengths of any two sides of a triangle has to be greater than the third side. The answer choices that satisfy the Triangle Inequality is 6 centimeters and 4 centimeters.

8 0
3 years ago
Which function is shown in the graph below?
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Answer:

3,1

Step-by-step explanation:

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2 years ago
T= u+v/2 for u<br><br> •u= 2t+v<br> •u= 2t/v<br> •u= 2(t-v)<br> •u= 2t-v
ratelena [41]

Answer:

u=2t-v

Step-by-step explanation:

t=(u+v)÷2 |×2

2t=u+v

-u=v-2t |:(-1)

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3 0
3 years ago
Read 2 more answers
The final price of the textbook for an English literature course is 13.5% more than the listed price when tax and shipping costs
GuDViN [60]

Answer:

The final price of the textbook rounded to the nearest dollar is $167

Step-by-step explanation:

To solve this problem, we need to find out what 13.5% of $147 equals.

13.5% = 0.135

0.135 x $147 = $19.845

$147 + 19.845 = 166.845

Round to the nearest dollar to get $167

3 0
3 years ago
You have 8 shopping trips to make this week. You have time to make any 4 of them today. In how many ways can you select the four
kumpel [21]

Answer:

1680 ways

Step-by-step explanation:

In this question, we are tasked with finding the number of ways in which we can select 4 trips out of 8 to make today.

Let us label the the trips we are to select as A B C D, one after the other

For selection A, we have 8 different trips waiting to be selected

For selection B, we have 7 trips to select from

For C, we have 6 to select from

while for D, we have 5 to select from. Thus, the total number of ways in which we can select these trips can be calculated as = 8 × 7× 6× 5 = 1,680 ways

7 0
3 years ago
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