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Serga [27]
2 years ago
14

Combine like terms in the expression 4k + 2k - k + 3. please help this is urgent

Mathematics
2 answers:
victus00 [196]2 years ago
3 0

4k + 2k - k + 3

6k - 1k + 3

5k + 3

Answer: 5k + 3

Leviafan [203]2 years ago
3 0

Answer:

Well

4k + 2k - k +3

Well the like terms here are K.

Just add or subtract the like terms (k) following order of operations.

4k + 2k - k = 5k

3 can’t be combined here.

5k + 3

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Answer:

The angles are 26 and 64

Step-by-step explanation:

When two angles are complementary, what this means is that the add up to 90 degrees

Now, let’s say one of the angles is x, the other angle is 12 more than twice it; mathematically that would be 2x + 12

Since they add up to be 90, we have

x + 2x + 12 = 90

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3 years ago
For a circle with a radius of 15 cm, what is the length of an arc intercepted by an angle measuring 120°?
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Answer: 31.43 cm

Step-by-step explanation:

The length of an arc  is calculated using the formula:

\frac{theta}{360} X 2\pir

where : theta is the angle in degree

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If the angle is given in Radian , the length can be calculated using the formula:

L = r∅

Since , the angle is given in degree , we will use the first formula.

L = \frac{theta}{360} X 2\pir

L = \frac{120}{360} X 2 X π X 15

L = \frac{1}{3} X 2 X \frac{22}{7} X 15

L = \frac{660}{21}

L = 31.42857143

L ≈ 31.43 cm

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Answer:

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