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IrinaK [193]
2 years ago
9

30 POINTS FOR ONE QUESTION!!!!

Mathematics
2 answers:
Westkost [7]2 years ago
5 0

Answer:

900.

Step-by-step explanation:

1) the initial area is: A₀=0.5*base*h;

2) the final area is: A=0.5*(5*base)*(5*h).

It means, that 25A₀=A, then A=900 [cm²].

notsponge [240]2 years ago
4 0
The answer to this question would be 900cm :)
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3. What are the roots of the polynomial y = x³ - 8?
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Step-by-step explanation:

x^3 is a perfect cube, 8 is a perfect cube, so we use difference of cubes.

{a}^{3}  -  {b}^{3}  = (a - b)( {a}^{2}  + ab +  {b}^{2} )

Cube root of x^3 is x.

Cube root of 8 is 2

So

a=x

b= 2.

(x - 2)( {x}^{2}  - 2x + 4)

Set these equations equal to zero

x - 2 = 0

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If we do the discriminant, we get a negative answer so we would have two imaginary solutions,

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If you want imaginary solutions, apply the quadratic formula.

1 + i  \sqrt{ 3 }

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4 0
1 year ago
A water wheel has a radius of 18 feet. the wheel is rotating at 5 revolutions per minute. find the linear speed, in feet per min
makkiz [27]

Answer:

The linear speed is

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step 1

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step 2

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8 0
3 years ago
The table shows the total cost for different numbers of jackets.
guapka [62]
69.75

I hope this helped you out!!
5 0
3 years ago
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The Thrill amusement park charges an entry fee of $40 and an additional $5 per ride, x. The Splash water park charges an entry f
seropon [69]
Answer: The two equations are:
y = 5x + 40
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8 0
3 years ago
What is the answer for 3.
scoundrel [369]
The answer is 27000000
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3 years ago
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