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Amanda [17]
3 years ago
11

Researchers count 30 tagged zebras and 150 total zebras in an area of a game reserve. if researchers had previously tagged 80 to

tal zebras at the game reserve, about how many total zebras live at the game reserve? write a proportion to extimate the total population.
Mathematics
1 answer:
algol133 years ago
5 0
About 400 zebras live at the game reserve.

The proportion would be 
30/150 = 80/x

This is because 30 zebras are tagged out of 150 in one area.  We know that they tagged 80 total zebras out of x total zebras.

To solve this, cross multiply:
x*30 = 150*80
30x = 12000

Divide both sides by 30:
30x/30 = 12000/30
x = 400
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zheka24 [161]

Answer:

X=102 y=288 =390

Step-by-step explanation:

X=50+32=82=180-82=102

Y= 50+32=82=360-82=288

Total answer is =390

6 0
2 years ago
Henry places £6000 in an account which pays 4.6% compound interest each year
aivan3 [116]

Answer:

£ 6,564.70

Step-by-step explanation:

Henry places £6000 in an account which pays 4.6% compound interest each year. Calculate the amount in his amount after 2 years

Compound Interest formula =

A = P(1 + r/n)^nt

A = Final Amounrt

P = Principal = £6,000

r = Interest rate = 4.6%

t = Time in years = 2 years

n = Compounding frequency = Yearly = 1

First, convert R percent to r a decimal

r = R/100

r = 4.6%/100

r = 0.046 per year,

Then, solve our equation for A

A = P(1 + r/n)^nt

A = 6,000.00(1 + 0.046/1)^(1×2)

A = £ 6,564.70

The amount in his account after 2 years = £ 6,564.70

7 0
3 years ago
Luis starts to do a division problem and notices that there is a pattern in the digits to the right of the decimal point.
Papessa [141]
<span>(B)rational
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Read 2 more answers
PLS HELP ASAP!! ALGEBRA 9!!<br> 4.29-x+36=102-2.52x+2
Andrei [34K]

Answer:

  x = 29

Step-by-step explanation:

If the equation is :

4.2(9-x)+36=102-2.5(2x+2)

→distribute 4.2 and -2.5 in parenthesis

4.2(9 - x) + 36 = 102 -2.5(2x + 2)

37.8 - 4.2x +36 = 102 -5x -5

→  have terms with x = terms without x

Keep the terms you need the way they are, and move the terms you need on the other side of equal sign with changed sign.

4.2(9 - x) + 36 = 102 -2.5(2x + 2)

37.8 - 4.2x +36 = 102 -5x -5

 - 4.2x  +5 x  = - 37.8 - 36 + 102 - 5

→ Combine like terms

             0.8x  = 23.2

→ Divide both sides by 0.8

                    x = 29

                   

4 0
2 years ago
5 cups to 8 cups <br> identify the percent
KIM [24]
5/8=x/100
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3 0
3 years ago
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