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weeeeeb [17]
3 years ago
13

There are 4500 people in Springfield. 1/3 of the population of Springfield are under the age of 21. how many people are under 21

in Springfield
Mathematics
1 answer:
Rama09 [41]3 years ago
4 0

Answer:

1,500\ people

Step-by-step explanation:

we know that

There are 4,500 people in Springfield. 1/3 of the population of Springfield are under the age of 21

so

To calculate how many people are under 21 in Springfield

Multiply 4,500 by 1/3

4,500*(1/3)=1,500\ people

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Please, I give 20 score. Find the volume
Elza [17]

Answer:

2388.16 in³

Step-by-step explanation:

1) find volume of cylinder

formula: πr²h

given:

π = 3.14

r = 8/2 = 4 in

h = 9 in

\pi \: r {}^{2} h

(3.14) \times (4 {}^{2} ) \times 9

3.14 \times 16 \times 9

452.16 \:  {in}^{3}

2) find volume of cuboid

formula: length × width × height

given:

length = 16 in

width = 11 in

height = 11 in

l \:  \times w \:  \times h

16 \times 11 \times 11

1936 \: in {}^{3}

total volume of figure

= volume of cylinder + volume of cuboid

= 452.16 in³ + 1936 in³

= 2388.16 in³

6 0
3 years ago
What is the volume of this Sphere?<br><br> 8 pi cm3<br> 16 pi cm3<br> 27 pi cm2<br> 36 pi cm2
agasfer [191]

Answer:

V = 36 pi cm^3

Step-by-step explanation:

The volume of a sphere is given by

V = 4/3 pi r^3 where 4 is the radius

V = 4/3 pi(3)^3

V = 36 pi cm^3

6 0
3 years ago
Michael orders pizzas from Pizza by Alfredo and from Alfredo’s Pizza Cafe. The pizzas from
FinnZ [79.3K]

Michael bought 7 pizzas from Pizza by Alfredo and 9 pizzas from Alfredo's Pizza Cafe.

Step-by-step explanation:

Cost of Pizza at Pizza by Alfredo = $3

Cost of pizza at Alfredo's pizza cafe = $5

Total amount spent = $66

Let,

Pizzas bought from Pizza by Alfredo = x

Pizzas bought from Alfredo's Pizza Cafe = y

According to given statement;

3x+5y=66     Eqn 1

5y = 3x+24        Eqn 2

Putting value of 5y from Eqn 2 in Eqn 1;

3x+(3x+24)=66\\3x+3x+24=66\\6x=66-24\\6x=42

Dividing both sides by 6

\frac{6x}{6}=\frac{42}{6}\\x=7

Putting x=7 in Eqn 2

5y=3(7)+24\\5y=21+24\\5y=45

Dividing both sides by 5

\frac{5y}{5}=\frac{45}{5}\\y=9

Michael bought 7 pizzas from Pizza by Alfredo and 9 pizzas from Alfredo's Pizza Cafe.

Keywords: linear equation, substitution method

Learn more about substitution method at:

  • brainly.com/question/10541435
  • brainly.com/question/10666510

#LearnwithBrainly

6 0
3 years ago
Solve the system by substitution.<br> y = 8x<br> y = 10x - 4<br> Submit Answer
erik [133]

Answer:

x=1, y=8

Step-by-step explanation:

Plug y=8x into y=10x-4.

8x=10x-4

Subtract 10x from each side.

-2x=-2

Divide each side by -2.

x=1

Plug x=1 into y=8x.

y=8(1)

y=8

5 0
3 years ago
use the formula S=(2)1/2bh+hw+sw+bw,with the following dimensions,base =3ft,height=2ft,width=5ft,side=4ft what is the surface ar
blondinia [14]
I wish i could help but i dont know it
5 0
3 years ago
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