By what percentage is the population increasing each year

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

1.1. per year

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7. Which method would be the most efficient to solve the system? y = 1/2x, 2x + 3y = 28A) graphing
B) substitution
C) elimination
D) distributive

Answers

y = ¹/₂x
2x + 3y = 28

   2x + 3y = 28
2x + 3(¹/₂x) = 28
   2x + 1¹/₂x = 28
   3¹/₂x = 28
      3¹/₂ 3¹/₂
   x = 8
y = ¹/₂x
y = ¹/₂(8)
y = 4
(x, y) = (8, 4)
The method would be a substitution method (the answer is B).

Distance between (-1,2) (7,8)

Answers

The distance between any two points is

   square root of ( [difference in the 'y's]² + [difference in the 'x's]² )

Difference in the 'y's = 8 - 2 = 6
Difference in the 'x's = 7 - (-1) = 8

Distance between them =

   square root of ( 6² + 8² ) =

   square root of ( 36 + 64 ) =

   square root of ( 100 ) = 10 .

Answer: 10

Step-by-step explanation: In this problem, we're asked to find the distance between the points (-1,2) and (7,8) so we use the distance formula which states that the distance between two points is equal to

$d =\sqrt{(x^(2) - x^(1))^(2) + (y^(2) - y^(1))^(2) }$ .

Our first point, (-1,2) represents ( $^(x) 1$ , $^(y)1$ ) and our second point,

(7,8) represents ( $^(x)2$ , $^(y)2$ ).

So, plugging the given information into the formula, we have $\sqrt{7 - (-1))^(2) + (8 - 2)^(2)}$ .

Next, we simplify inside the parentheses to get $\sqrt{(8)^(2) + (6)^(2)}$ .

Next, 8² is 64 and 6² is 36 so we have $√(64 + 36)$ or $√(100)$ which is 10.

So the distance between the points (-1,2) and (7,8) is 10.

Of the 48 oranges in a carton 1/3 of them were rotten Ben and David took the remaining good oranges it's been took eat my oranges and David how many oranges did David take

Answers

Answer:

David took 16 oranges.

Step-by-step explanation:

We are given the following in the question:

Total number of oranges = 48

Oranges rotten =

$(1)/(3)$

Number of oranges rotten =

$(1)/(3)* 48\n\n=16$

There were 16 rotten oranges.

Number of good oranges left =

$= 48-16\n=32$

These are equally divided among Ben and David.

Number of oranges each Ben and David get =

$(32)/(2) = 16$

Thus, David took 16 oranges.

What is the prescribed dosage of a certain medicine for a child 6 years old, if the adult dosage of the medicine is 180 milligrams?C= a/((a+12)) ∙ 180
C = child’s dosage in milligrams
a = age of the child
A = adult dosage in milligrams

Answers

Answer:

60 milligrams is the right dosage for the child.

Step-by-step explanation:

The given expression is

$C=(a)/((a+12)) * 180$

Where $a=6$ , because according to the problem, the child is 6 years old.

Replacing and solving, we have

$C=(6)/((6+12) )* 180=(6)/(18 )* 180=60mg$

Therefore, if the adult dosage is 180 milligrams, and the child is 6 years old, the right dosage is 60 milligrams.

c+ childs dosage in miligrams

What does mean stand for

Answers

When you add numbers together and you divide it by the number of numbers you added is your mean. Like if you get a 90 and 91 You add them and divide it by 2 and that will be your mean.

If you have a set of numbers, add all the number up and divide them by how many numbers you have. Hope that helps!:)

PLEASE HELP ASAP 30 PTS

Answers

The decay factor would be 1 minus the percent of decrease:

1-0.12 = 0.88

The correct answer will be choice C:0.88!

Other Questions

I need some help with this please! An explanation would be lovely too!

Solve the equation. 15x^2 – 28x + 5 = 0

Justin weighs 72 kilograms. What is his weight in pounds?

The Simplified base of the function f(x) = 3(16) 3/4x is 12. True Or False?