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UkoKoshka [18]
3 years ago
8

What methods could be used to solve the following quadratic equation x^2 +12-28=0

Mathematics
1 answer:
kakasveta [241]3 years ago
7 0

Answer:

Step-by-step explanation:

x^2 +12x-28=0

x^2+(14-2)x-28=0

x^2+14x-2x-28=0

X(X+14)-2(X+14)=0

(X+14)(X-2) is the factor of this quadratic equation.

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Help!!!!!!!!!!!!!!!!!!!
Marina CMI [18]

Answer:

Step-by-step explanation:

area of a cylinder = (area of a circle) times the (height)

area of a cylinder = π radius² × height

            radius = 57 cm        height = 40 cm

area of a cylinder  =   π 57² cm² × 40 cm

                              =   π (57² × 40) cm³

                              =   π ( 57 × 57 × 40) cm³             57x57 = 399 + 2850 = 3249  

                              =   π (3249 × 40) cm³

                              =    129969π cm³      π = 3.14

                              =    129969 × 3.14  cm³

                              =    408,074.4 cm³       < -----------------   Final Answer

3 0
3 years ago
The base of the following pyramid is a square. If the surface area of the pyramid is 896 in^2, what is it's volume? Side base le
MatroZZZ [7]

Answer: 457.3

Step-by-step explanation:

V=\frac{lwh}{3}

V=\frac{14*14*7}{3}= 457.3

7 0
3 years ago
PLEASE HELP ILL GIVE BRAINLIEST TO FIRST ANSWER
lorasvet [3.4K]

Answer:

Answer:

x =11

Step-by-step explanation:

6x +1 + 5x -17 + 9x - 24 = 180

x =11

p= 7x

a= -12x

t=-15x

PLEASE MARK AS BRAINLIEST!!! :)

4 0
2 years ago
Read 2 more answers
If about 25 babies are born every 5 seconds then how many babies are born in a minute, a hour, and a day?
anastassius [24]
5 = 25b
60 seconds / 5 = 12.
12 * 25 = 300.
300 babies / min
hr ? 300b * 60 min = 1800. 
1800 babies/ hr.
1800* 24 = 43200 babies in one day.
7 0
3 years ago
Find the area of a triangle with a base length of 6 units and a height of 7 units. 10 13 14 21
saveliy_v [14]
Area of a triangle = 1/2 x base x height
= 1/2 x 6 x 7 = 3 x 7 = 21 square units.
8 0
3 years ago
Read 2 more answers
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