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Hoochie [10]
3 years ago
11

Nikolas and Angela were trying to solve the equation: 3x^2+10x=03x 2 +10x=03, x, squared, plus, 10, x, equals, 0 Nikolas said, “

I can complete the square. Half of 101010 is 555, and 555 squared is 252525. So I'll add 252525 to both sides, factor, and solve.” Angela said, “I'll factor the left-hand side of the equation as x(3x+10)x(3x+10)x, left parenthesis, 3, x, plus, 10, right parenthesis and solve using the zero product property.”
Mathematics
2 answers:
sergey [27]3 years ago
6 0

Answer:

Only Angela's

Step-by-step explanation:

Ratling [72]3 years ago
4 0

Answer:

zero product property so Angela

Step-by-step explanation:

(Angela)

3x² + 10x = 0

x(3x + 10) = 0

x = 0 => x₁ = 0

3x + 10 = 0 => 3x = - 10 => x₂ = - 10/3 = - 3  1/3

Good luck !

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The work of a student to solve a set of equations is shown below: m=8+2n; 4m=4+4n. Solve by elimination
nadya68 [22]

Answer:

Step-by-step explanation:

4(8+2n) = 4 + 4n

32 + 8n = 4+4n

4n = -28

n = -7

4 0
3 years ago
Megan and molly have an age gap of 6 years. Megan is older. If molly is 8 years old, then how old is Megan?
Maurinko [17]

Answer:

Megan is 14

Step-by-step explanation:

Megan is M

Molly is Mo

Mo = 8

M = x

6 + mo = x

6 + 8 = 14

8 0
3 years ago
What is the volume of the composite figure? (Round to the nearest hundredth. Use 3.14 for Pi.)
Natasha2012 [34]

The volume of composite figure is 385.17 cubic centimeters, if a half sphere and cone have a radius of 4 centimeters and height of 15 centimeters.

Step-by-step explanation:

The given is,

              Composite figure is combination of a  half sphere and cone

              Both have a radius of 4 centimeters

              The cone has a height of 15 centimeters

Step:1

   Volume of composite figure = Volume of half sphere + Volume of cone  

Step:2

     Formula for volume of semi sphere,

                                    Volume of half sphere, V_{Half sphere} = \frac{2}{3}  \pi  r^{3}

     Where, r - Radius of Half sphere,

     From given, r = 4 centimeters

                                    V_{Half sphere} = \frac{2}{3}  \pi  4^{3}

                                                       = (0.6667) (3.14)  (64)        (∵ \pi = 3.14 )

                                      V_{Half sphere} = 133.9733 cubic centimeters

     Formula for volume of cone,

                      Volume of cone, V_{cone} = \frac{1}{3} \pi r^{2} h

     where, r - Radius of cone

                h - Height of cone

     From given,

                 r = 4 centimeters

                h = 15 centimeters

     Volume of cone,

                                                V_{cone} = \frac{1}{3} \pi 4^{2}(15)    

                                                         = (0.333333) (3.14)(16)(15)       (∵ \pi = 3.14 )

                                                 V_{cone} = 251.1997 cubic centimeters

Step:3

        Volume of composite figure =  133.9733 + 251.1997

       Volume of composite figure  = 385.17 cubic centimeters

Result:

         The volume of composite figure is 385.17 cubic centimeters, if a half sphere and cone have a radius of 4 centimeters and height of 15 centimeters.

4 0
3 years ago
Read 2 more answers
I don’t know how to solve this
grandymaker [24]
Area of big rectangle =8x7=56cm²
area of small rectangle =5x4=20cm²
hence area of shaded region=56-20=36cm²
7 0
3 years ago
Read 2 more answers
Pleeeeeeeeese help quik
Ilya [14]

Answer:

#3

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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