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kotykmax [81]
3 years ago
6

How do I solve this equation by completing the square. 4X^2 + 12x +5 = 21

Mathematics
1 answer:
Artyom0805 [142]3 years ago
3 0
The Answer is: x1=-4 x2=1.
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I need help with these 3 problems
Brilliant_brown [7]
52) 115-3=112 that were given away
Now divide 112 by each, seeing if they give you a non mixed number.
The only one that would give you a full number would be 28. So there are 28 kids in his class.
54) 19-4=15
Now double 15 since he sold half, so he started with 30 stamps originally. 
56) 500-2*=324
-2*=-176
age=88



6 0
3 years ago
Ben can type 25 words in half a minute. At this rate, how many words can he type in 5 minutes?
Kruka [31]
I can’t see the “students work”. But the answer would be 250 words in 5 minutes.
Here’s how you would set up the equation:
25x(5*2)=
So your first step would be to multiply 5 and two because they’re in parenthesis, which would be 10.
So now you have:
25x10
25 times 10 is 250.
Hope that makes sense and helps! :)
4 0
3 years ago
Marina sells candles that are in the shape of cones. she makes a yellow candle that has a diameter of 4 inches and a height of 1
Katena32 [7]

The correct statements are:

  • the volume of the yellow candle is about 46.05 inches cubed.
  • the radius of the yellow candle is 2 in
  • he base area of the yellow candle is about 6.28 inches squared.
  • the price of one yellow candle is about $16.12.

<h3>What are the correct statements?</h3>

Volume of a cone = 1/3(πr²h)

  • π = 3.14
  • r = radius = diameter / 2 = 4/2 = 2 inches
  • h = height

Volume of a cone = 1/3 x 2² x 11 x 3.14 = 46.05 inches cubed.

Base area = πr²

3.14 x 4 =  12.56 inches squared.

Price of one yellow candle = volume x price per cubic unit

46.05 x  $0.35 = $16.12

To learn more about the volume of a cone, please check: brainly.com/question/13705125

#SPJ4

3 0
2 years ago
Help PLEASE!
laila [671]

Answer:

the first answer is correct Edge 2020

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What two numbers can you multiply to get 5 and add to get 8
Mashcka [7]
1 x 5 = 5 + 3 = 8
tell me if it’s not the answer your looking for
5 0
3 years ago
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