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kicyunya [14]
3 years ago
13

PLEASE ANSWER I WILL MARK THE BRAINIEST ANSWER :)factorise: X^2 + 10x + 16

Mathematics
1 answer:
Damm [24]3 years ago
3 0

Answer:

(x+2)(x+8)

Step-by-step explanation:

1.)find factors of the third expression(16)that will add up to give the second expression(10)

16=2×8. 10=2+8

2.)substitute those factors inplace of 10

{x}^{2}  + 10x + 16

x {}^{2}  + 2x + 8x + 16

3.)factorise using grouping method

( {x}^{2}  + 2x) + (8x + 16)

x(x + 2) + 8(x + 2)

= (x + 2)(x + 8)

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Find the measure of each angle in degrees and radians.<br>​
Paul [167]

Problem 9

This is not correct. It would be correct if the longer arc mark was not there. However, because it is there, you have to travel 360-30 = 330 degrees in the negative direction. So the angle shown along that arc is -330 degrees which converts to -11pi/6 radians.

====================================

Problem 10

The spiral arc almost wraps itself around 2 times over, effectively almost making two full revolutions.

1 revolution = 2pi radians

2 revolutions = 4pi radians (multiply both sides by 2)

Subtract off pi/3

4pi - pi/3 = 12pi/3 - pi/3 = 11pi/3

11pi/3 represents the radian measure of the spiral arc

Convert to degrees

11pi/3 radians = (11pi/3)*(180/pi)

11pi/3 radians = (11/3)*180

11pi/3 radians = 11*180/3

11pi/3 radians = 11*60

11pi/3 radians = 660 degrees

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Problem 11

Add pi/2 radians to the angle measure shown

pi/2 + 7pi/18 = 9pi/18 + 7pi/18

pi/2 + 7pi/18 = 16pi/18

pi/2 + 7pi/18 = 8pi/9

The full angle in radians is 8pi/9 radians

Now convert to degrees

8pi/9 radians = (8pi/9)*(180/pi)

8pi/9 radians = (8/9)*180

8pi/9 radians = 8*180/9

8pi/9 radians = 8*20

8pi/9 radians = 160 degrees

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Problem 12

Add pi/2 radians (aka 90 degrees) to pi/9 to get

pi/2 + pi/9 = 9pi/18 + 2pi/18

pi/2 + pi/9 = 11pi/18

This represents the red angle shown in the diagram below.

Subtract this found angle from 4pi, which represents 2 full revolutions

4pi - 11pi/18 = 72pi/18 - 11pi/18

4pi - 11pi/18 = 61pi/18

The spiral mark shown in the diagram is 61pi/18 radians

Convert to degrees

61pi/18 radians = (61pi/18)*(180/pi)

61pi/18 radians = (61/18)*180

61pi/18 radians = 61*180/18

61pi/18 radians = 61*10

61pi/18 radians = 610 degrees

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3 years ago
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2 ko power .

<h2>p =2200 </h2>

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Is the value of the first 7 ten times as great as the value of the second 7 in 7,027
Lena [83]

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the first 7, 7000, is 1000 times greater than the first 7. If the first seven is the one in the ones value and the second is in the 7, than it it 1000 smaller.

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3 years ago
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