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adoni [48]
3 years ago
10

The population of a certain island has an annual growth rate of 6.9%. If you start with a poplulation of 2500 people, what would

the population be in 10 years? Round your answer to the nearest hundred.
Mathematics
1 answer:
xeze [42]3 years ago
3 0
P=2,500×(1+0.069)^(10)
P=4,872.11
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scientist needs 120 liters of a 20% acid solution for an experiment. The lab has available a 25% and a 10% solution. How many li
sattari [20]

Answer:

The scientist needs 80 liters of 25% solution and 40 liters of 10% solution.

Step-by-step explanation:

If x is the liters of 25% solution, and y is the liters of 10% solution, then:

x + y = 120

0.25x + 0.10y = 0.20(120)

Solve the system of equations using substitution or elimination.  Using substitution:

0.25x + 0.10(120 − x) = 0.20(120)

0.25x + 12 − 0.10x = 24

0.15x = 12

x = 80

y = 40

The scientist needs 80 liters of 25% solution and 40 liters of 10% solution.

4 0
2 years ago
Need help asap please
KengaRu [80]

Answer:

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Step-by-step explanation:

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3 years ago
In a triangle ABC, if angle A = 53 degree and Angle C=45 degree then find the value of Angle B is:​
murzikaleks [220]

Answer:

69

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2 years ago
Cabs charge $3.60 Flag Fall plus $2.19 per km. (a) Write down an equation to calculate the cost, C, of cab fare for a distance d
Softa [21]

(a) C = 3.60+2.19d

(b) The cab fare will be $36.45 for a distance of d kilometers.

Step-by-step explanation:

Given,

Charges of Flag Fall = $3.60

Per kilometer charges = $2.19

Let,

d be the total distance.

C be the total cost for d kilometers.

(a) Write down an equation to calculate the cost, C, of cab fare for a distance d kilometres.

Total cost = Charges of flag fall + Per kilometer charges * distance

C = 3.60+2.19d

(b) Use your equation to calculate the cost of cab fare for a distance of 15 km.

Here,

d=15

Putting in Equation

C=3.60+2.19*15\\C=3.60+32.85\\C=36.45

The cab fare will be $36.45 for a distance of d kilometers.

Keywords: distance, addition

Learn more about addition at:

  • brainly.com/question/13035995
  • brainly.com/question/13062539

#LearnwithBrainly

4 0
3 years ago
What's 1628 rounded to 3 significant figures
Alenkasestr [34]
The 8 rounds up so the answer is 1630
6 0
3 years ago
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