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2 years ago

Can someone help me on this?

Mathematics

1 answer:

Mnenie [13.5K]2 years ago

5 0

Answer:

Step-by-step explanation:

We know that cosx = sin( $\pi$ - x)

We can apply it here:

sin(55°) = cosx

cos( $\pi$ - 55°) = cosx

Now we apply the arccos to both sides:

x = $\pi$ - 55° + 2k $\pi$ or x = - $\pi$ - 55° + 2k $\pi$

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Which expression is equivalent to

givi [52]

Answer:

$\boxed{D. 9x + 36}$

Step-by-step explanation:

Hey there!

Given info

9(x + 4)

Solve!

9*x = 9x

9*4 = 36

Answer

9x + 36

D. 9x + 36

Hope this helps :)

6 0

4 years ago

Read 2 more answers

The following M & M colors are in the bowl: 4 yellow, 6 orange, 3 green, 5 blue, 2 brown. What is the probability of selecti

vladimir1956 [14]

Answer:

There are non, coz I ate all the blue ones

8 0

3 years ago

Find the GCF and LCM of 217x328x11 and 213x345x74and explain your reasoning.

AfilCa [17]

Answer:

Given expressions are,

217 x 328 x 11

213 x 345 x 74,

Since, 217 = 7 × 31

328 = 2 × 2 × 2 × 41,

11 = 1 × 11,

So, we can write, 217 x 328 x 11 = 7 × 31 × 2 × 2 × 2 × 41 × 1 × 11

Now, 213 = 3 × 71

345 = 3 × 5 × 23,

74 = 2 × 37,

So, 213 x 345 x 74 = 3 × 71 × 3 × 5 × 23 × 3 × 5 × 23

Thus, GCF ( greatest common factor ) of the given expressions = 1 ( because there are no common factors )

We know that if two numbers have GCF 1 then their LCM is obtained by multiplying them,

Hence, LCM ( least common multiple ) of the given expressions = 217 x 328 x 11 x 213 x 345 x 74

6 0

4 years ago

-x + 2y = 3 2x – 3y = -6

s2008m [1.1K]

Answer:

x = -3

y = 0

Step-by-step explanation:

Given equations :- 

-x + 2y = 3 ....... ( i )

2x - 3y = -6 ....... ( ii )

From ( i ) 

-x + 2y = 3

-x = 3 - 2y

x = 2y - 3 ........ ( iii )

From ( ii ) 

2x - 3y = -6

2x = -6 + 3y

$x = \frac{ - 6 + 3y}{2}$

........ ( iv )

Equating ( iii ) and ( iv )

x = x

$2y - 3 = \frac{ - 6 + 3y}{2}$

4y - 6 = -6 + 3y

4y - 3y = -6 + 6

y = 0

Putting value of y in ( iii )

x = 2y - 3

x = 2 ( 0 ) - 3

x = -3

4 0

3 years ago

A circular running track 1/3 is mile long. Elena runs on this track, completing each lap in 1/15 of an hour. Elena's running spe

jek_recluse [69]

Answer:

2.22m/s

Step-by-step explanation:

Distance = Velocity/Time

533.33m = V/4minutes

V = 533.33/240 seconds

V = 2.22m/s

3 0

3 years ago