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3 years ago

How much air would be needed to fill a bouncy ball with a radius of 9 cm?

Mathematics

2 answers:

Rzqust [24]3 years ago

5 0

The volume of a sphere = (4/3) $\pi$ r^3

r = radius

In our problem,

r = 9 cm

To find the volume of this sphere, plug our radius into the volume equation.

V = (4/3) $\pi$ (9)^3 = 972 $\pi$ cm^3

The correct answer is C

mart [117]3 years ago

3 0

Answer: c.

Step-by-step explanation:

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Realiza estas operaciones y expresa el resultado en metros 1m-(5dm3cm) (2hm4m)+35dam (3hm6dam)+(8dam5m) (2m5dm6cm)-85cm

ivolga24 [154]

Answer:

126.109,63 m

Step-by-step explanation:

Por conveniencia, todas las unidades se convierten a m

1000 m = 1 km

100 m = 1hm

10m = 1 presa

1 m = 1 m

10dm = 1m

100 cm = 1 m

1000 mm = 1 m

1m- (5dm3cm) (2hm4m) + 35dam (3hm6dam) + (8dam5m) (2m5dm6cm) -85cm

= 1m- (5/10 +3/100) (2 * 100 + 4m) + 35 * 10 (3 * 100 + 6 * 10) + (8 * 10 + 5m) (2m + 5/10 + 6/100 ) -85/100

= 1 m- (0.5 +0.03) (200 + 4m) +350 (300 +60) + (80 + 5m) (2m + 0.5 + 0.06) -85/100

= 1 m- (0,53) (204 m) +350 (360) + (85 m) (2,56) -85/100

= 1 m- (108,12 m) +126000+ (217,6) - 0,85

= 126.109,63 m

For convenience all units are converted to m

1000m = 1km

100 m= 1hm

10m = 1 dam

1m= 1m

10dm= 1m

100 cm= 1 m

1000 mm= 1m

1m-(5dm3cm) (2hm4m)+35dam (3hm6dam)+(8dam5m) (2m5dm6cm)-85cm

= 1m-(5/10 +3/100) (2*100 +4m)+35*10 (3*100 +6*10)+(8*10+5m) (2m+5/10+6/100)-85/100

= 1m-(0.5 +0.03) (200 +4m)+350 (300 +60)+(80+5m) (2m+0.5+0.06)-85/100

= 1m-(0.53) (204m)+350 (360)+(85m) (2.56)-85/100

= 1m-(108.12m)+126000+(217.6)- 0.85

= 126,109.63 m

5 0

3 years ago

The ratio of 1/2 to 3 is equal to the ratio of 5 to what number plz halp ;(

Dvinal [7]

Answer:

5 : 30

Step-by-step explanation:

Note that $\frac{1}{2}$ × 10 = 5

Thus 3 × 10 = 30

Hence

$\frac{1}{2}$ : 3 = 5 : 30

8 0

3 years ago

What are the zeros of the function f(x) = (x + 5)(2x-3)?

ohaa [14]

The answer would be C done this yesterday

6 0

3 years ago

A total of $12,000 is invested at an annual interest rate of 9%. Find the balance

sineoko [7]

Answer:

$18,726.11

Step-by-step explanation:

Lets use the compound interest formula provided to solve this:

$A=P(1+\frac{r}{n} )^{nt}$

P = initial balance

r = interest rate (decimal)

n = number of times compounded annually

t = time

First lets change 9% into a decimal:

9% -> $\frac{9}{100}$ -> 0.09

Since the interest is compounded quarterly, we will use 4 for n. Lets plug in the values now:

$A=12,000(1+\frac{0.09}{4})^{4(5)}$

$A=18,726.11$

The balance after 5 years is $18,726.11

6 0

3 years ago

PLEASE HELP Simplify (3x2 − 2) + (2x2 − 6x + 3).

leva [86]

The whole equation simplified to one answer is 5

6 0

3 years ago

Read 2 more answers