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kompoz [17]
2 years ago
14

en una clase de 90 alumnos , 15 son nacidos en estados unidos . que porcentaje son nacidos en estados unidos?

Mathematics
1 answer:
alukav5142 [94]2 years ago
3 0

Answer:

la respuesta será 77%

Step-by-step explanation:

será 77% porque si lo divides sale así 90/15% será 77%

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{System: I am having a bit of trouble calculating this. And I am reposting this sense I don’t think it’s fair to give only a lit
Darya [45]

Total volume of light-blue paint:

\left(4+\dfrac38\right)+\left(6+\dfrac18\right)=10+\dfrac48=10+\dfrac12

Divide by \dfrac14 to find how many containers he can divided this total into:

\dfrac{10+\frac12}{\frac14}=4\left(10+\dfrac12\right)=40+\dfrac42=40+2=42

so the answer is B.

3 0
3 years ago
Use the model below to estimate the average annual growth rate of a certain country's population for 1950, 1988, and 2010, where
Morgarella [4.7K]

Answer:

The average annual growth rate of a certain country's population for 1950, 1988, and 2010 are 2.398, 0.9985 and 0.2236 respectively.

Step-by-step explanation:

The given equation is

Y=-0.0000084x^3+0.00211x^2-0.205x+8.423

Where Y is the annual growth rate of  a certain country's population and x is the number of years after 1900.

Difference between 1950 and 1900 is 50.

Put x=50 in the given equation.

Y=-0.0000084(50)^3+0.00211(50)^2-0.205(50)+8.423

Y=2.398

Therefore the estimated average annual growth rate of the country's population for 1950 is 2.398.

Difference between 1988 and 1900 is 88.

Put x=88 in the given equation.

Y=-0.0000084(88)^3+0.00211(88)^2-0.205(88)+8.423

Y=0.9984752\approx 0.9985

Therefore the estimated average annual growth rate of the country's population for 1988 is 0.9985.

Difference between 2010 and 1900 is 110.

Put x=110 in the given equation.

Y=-0.0000084(110)^3+0.00211(110)^2-0.205(110)+8.423

Y=0.2236

Therefore the estimated average annual growth rate of the country's population for 2010 is 0.2236.

8 0
2 years ago
What is the answer to this question? Please Help.
Arte-miy333 [17]

Answer:

x = 2, y= 3

Step-by-step explanation:

y = -2x+7

y = 5x-7

Since the equations are both equal to y, set them equal to each other

-2x+7 = 5x-7

Add 2x to each side

-2x+7 +2x= 5x+2x-7

7 = 7x -7

Add 7 to each side

7+7 = 7x

14 = 7x

Divide by 7

14/7 = 7x/7

2 = x

Now find y

y = 5x-7

y = 5*2 -7

y = 10-7

y =3

5 0
3 years ago
31.205*4.97/1.925 correct to 1 significant number
Sonja [21]

Answer:80

Step-by-step explanation:

31.205= 31

4.97=5

1.925=2

31*5/2=155/2=77.5=80 (1 significant figure)

6 0
1 year ago
Alyssa is building a brick mailbox. She is going to stack bricks that are each 2/3 ​​ ftstart fraction, 2, divided by, 3, end fr
Reptile [31]
7 bricks

7 x 2/3 = 4 2/3
4 0
3 years ago
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