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ki77a [65]
2 years ago
14

How to factorise x2 + 8x + 12

Mathematics
2 answers:
storchak [24]2 years ago
4 0

Answer:

(x+6) × (x+2)

Step-by-step explanation:

x² + 8x +12

x² +6x +2x + 12.  write 8x as a sum

x × (x+6) + 2x + 12.   factor out x from the expression

(x+6) × (x+2) .  factor out x+6 from the expression

final answer is (x+6) × (x+2)

elena-s [515]2 years ago
3 0

Answer:

I have made it in above figure

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L 5.2.3 Quiz: Two-Variable Systems: Substitution
Misha Larkins [42]

Answer:

We get x=3 and y=21

The ordered pair will be: (3,21)

Step-by-step explanation:

We need to use the substitution method to solve the system of equations.

y = 10x-9\\y = x + 18

For substitution method we substitute the value of x or y from one equation to other.

Let:

y = 10x-9--eq(1)\\y = x + 18--eq(2)

Putting value of y from equation 2 into equation 1

y=10x-9\\Put\:y=x+18\\x+18=10x-9\\x-10x=-9-18\\-9x=-27\\x=\frac{-27}{-9}\\x=3

So, we get value of x=3

Now, for finding value of y, We substitute the value of x

Find value of x from equation 2

y=x+18\\x=y-18

Now, putting value of x in equation 1

y=10x-9\\Put\:x=y-18\\y=10(y-18)-9\\y=10y-180-9\\y-10y=-189\\-9y=-189\\y=\frac{-189}{-9}\\y=21

So, we get value of y=21

So, We get x=3 and y=21

The ordered pair will be: (3,21)

6 0
2 years ago
C ÷ -3 = 8 I’ve been stuck on this prob for awhile and I need help on it
Otrada [13]
<h2>Answer:</h2><h2>c = -24</h2><h2 /><h2>Hope this helps!!</h2>

8 0
3 years ago
Answers need help!!!!!!
Gala2k [10]
<h3>Step-by-step explanation:</h3>

<u>Pythagorus theorum:</u>

9² = 3² + YZ²

81 - 9 = YZ²

√72 = YZ

∴YZ= 8.48 ≈ 8.5

<u>Trigonometry:</u>

We have adjacent as 3, and hypotenuse as 9

cos X = 3/9

X= cos∧-1 (3/9) → <em>[cos inversed]</em>

∴X= 70.5°

We have opposite as 3 and hypotenuse as 9

sin Z= 3/9

Z= sin∧-1 (3/9)→<em> [sin inversed]</em>

∴Z= 19.47 ≈ 19.5

4 0
3 years ago
The Fuschia Bot clicks ____ times in 0.75 sec, and its Unit Rate is 8 clicks per second. Find the number of clicks.
yan [13]

Answer:  The Fuschia Bot clicks _6_ times in 0.75 sec,

Step-by-step explanation:

Multiply the unit rate by time:

.75 sec × 8 clicks/sec

Seconds cancel.  .75(8) = 6 clicks

6 0
2 years ago
Which of the following pairs of numbers has a least common multiple ?
JulsSmile [24]

Answer:

2 and 24

Step-by-step explanation:

because I like to say bawk

5 0
2 years ago
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