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IgorLugansk [536]
3 years ago
15

Jaxon needs to solve the equation x2 + 12x – 20 = 0 by completing the square. Which pair of steps is the most efficient way to b

egin?

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
8 0

Answer:

D. x^2+12x+36=20+36

Step-by-step explanation:

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A department store offered a 15% discount off the regular price of a shirt. The amount of the discount is $3. What is the regula
torisob [31]

Answer: $3.53

Step-by-step explanation: 15 percent off can be thought of as 85% of the original value because 100-15 is 85. this means that if x is the value of the original shirt, .85x=3

divide by .85

x=3.5294

which is about $3.53

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2 years ago
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How many 6s are there in 285
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47.5 6s in 285

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Angle ABD and angle DBC are linear pairs, and angle ABD and angle EDC are vertical angles. If the measure of angle ABD=5(2x+1),
Ugo [173]
∠ ABD = 5(2X+1)
∠ DBC = 3X+6
∠ EBC = Y +135/2

∠ ABD and ∠ DBC are linear pairs
∴ ∠ ABD +∠ DBC = 180
∴ 5(2X+1) + 3X+6 =180
solve for x
∴ x = 13
∴∠ ABD = 5(2X+1) = 5(2*13+1) = 135
  ∠ DBC = 3x+6  = 3*13+6 = 45

∠ ABD  and ∠ EBC are vertical angles
∴ ∠ ABD = ∠ EBC = 135
∴ y +135/2 = 135
∴ y = 135/2

The <span>statements that are true:
--------------------------------------</span><span>
C.) x=13
E.)measure of angle EBC =135
F.) angle DBC and angle EBC are linear pairs </span>




8 0
3 years ago
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I run a 10km race in 56 minutes.what is my average speed in kilometres per minute
Luden [163]

Hey there! I'm happy to help!

You ran a 10 kilometer race in 56 minutes (good job!). To find how much you ran in 1 minute, you simply divide by 56.

10/56=0.178571428

Therefore, you ran around 0.18 km/minute.

Have a wonderful day! :D

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3 years ago
Simplify the expression 2x(4 + x - 9 + 3x)
sammy [17]
The answer is d 8x^2 - 10
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3 years ago
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