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ValentinkaMS [17]
2 years ago
10

A sphere with diameter of 12 cm is being painted. How much more paint is now needed to paint the sphere that has four times the

original diameter.
4 times more paint
B 8 times more paint
16 times more paint
D 64 times more paint
Mathematics
1 answer:
Nina [5.8K]2 years ago
5 0

Answer:

64 times more paint will be needed since the volume of the second is 64 times the volume of the first

Step-by-step explanation:

If the original sphere is 12 cm diameter

its radius will be half this measure which is 12/2 = 6 cm

The new diameter is 4 times this, so its radius would be 4 times this and it is 24 cm

Now, the volume of the sphere means we have to raise the power of the radius by 3

The other terms in the formula remains the same for both, so we are simply comparing the radii

so we will have the difference in volume in times of multiples as ;

(24/6)^3 = 4 * 4 * 4 = 64

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Logan drove from New Orleans to Nashville to visit friends. Logan drove the speed
Nata [24]

Answer:

540 miles

Step-by-step explanation:

60 miles per 1 hour

120 per 2 hours... etc.

multiply 60 and 9 to get 540

7 0
3 years ago
2 cm green square is painted on a triangle with a base of 6 and a height of 7. A dot will be randomly placed on the triangle. Wh
agasfer [191]
The area of the triangle is
(1/2)*(6)*(7) = 21 cm²

The area of the square is
(2)(2) = 4 cm²

The area of the triangle that is not covered by the square is
21 - 4 = 17 cm²

The probability that the dot will be placed outside the square is
17/21 

Answer: 17/21 (or 0.81)
7 0
2 years ago
Evaluate the polynomial for the given value of x: f(x) =3x^3+5x^2+x-2 when x=2
sasho [114]

Answer: f(2)=44

Step-by-step explanation:

Given the polynomial f(x) =3x^3+5x^2+x-2, you can evaluate it for the given value of the variable "x" by substituting the value x=2 into the polynomial.

Therefore, when x=2,  you get the following result:

f(x) =3x^3+5x^2+x-2 \\\\f(2) =3(2)^3+5(2)^2+(2)-2\\\\f(2)=3(8)+5(4)+2-2\\\\f(2)=24+20\\\\f(2)=44

3 0
2 years ago
Given that parallelogram ABCD and angle D=145 what is the measure of angle C
stiv31 [10]
Opposite angles of parallelogram are equal.
sum of interior angles of parallelogram is 360 degrees.

Therefore,
A + B + C + D = 360
x + 145 + x + 145 = 360 
x = 35
Therefore angle C is 35 degrees 
8 0
3 years ago
Read 2 more answers
A=5x+20
Vsevolod [243]
Not sure what you’re asking ? but

move the terms
-5x+20-a

divide both sides
x=-4+1/5a

solution:
x=-4+1/5a
5 0
2 years ago
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