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Anastasy [175]
3 years ago
12

A certain forest covers an area of

Mathematics
2 answers:
aliya0001 [1]3 years ago
8 0
Okay. I'll use a formula that my math teacher taught me.

3400(1-0.07)^15
3400(0.93)^15
3400(0.33670086205)
1144.78293098 ( which rounds to about 1145 square km )
Ede4ka [16]3 years ago
6 0

Answer:

1144.78 Km^2

Step-by-step explanation:

If the forest covers an area of  3400 km^2 and it decreased by 7%, the new area covered after a year will be equal to 3400 less the product of 3400 and 7%

= 3400 - 7% * 3400

= 3400 (1 - 0.07)

After the second year, the area becomes

= 3400 (1 - 0.07) - 7% * 3400 (1 - 0.07)

= 3400 (1 - 0.07)(1 - 0.07)

= 3400 (1 - 0.07)²

Following this pattern, the area after 15 years

= 3400 (1 - 0.07)^15

= 1144.782931  km^2

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aleksandr82 [10.1K]

Answer:

the formula represent the correct way is  π(4)^2 (5)

Step-by-step explanation:

The formula that represent the correct way to calculate is given below:

As we know that

Volume = πr^2 h

where

r denotes the radius i.e. 4 inches

And, h denotes the height i.e. 5 inches

Now placed these values to the above formula

So,

= π(4)^2 × 5

= 80π in^3

Hence, the formula represent the correct way is  π(4)^2 (5)

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3 years ago
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Draw 10 marbles use 5-group.
LenaWriter [7]

Answer:

2

Step-by-step explanation:

there would be 2 in every group, 10 divided by 5

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Rewrite the subtraction problem then find the difference 35-19
Stella [2.4K]
35-19 equals 16
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3 years ago
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Solve: 5x - 7x + 6 = -2(x - 3).
WINSTONCH [101]
5x - 7x + 6 = -2(x - 3)
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You are decorating a Rose Bowl float. There are 108 red roses, 144 white roses, 48 yellow roses, and 72 purple roses. If bunches
notsponge [240]

Answer:

Step-by-step explanation:

Number of red roses = 108

Number of white roses = 144

Number of yellow roses = 48

Number of purple roses = 72

If the number of roses in each bunch are identical,

Number of bunches of roses = HCF of number of roses

Factors of 144 = 3×3×2×2×2×2×1

Factors of 108 = 3×3×3×2×2×1

Factors of 72 = 3×3×2×2×2×1

Factors of 48 = 3×2×2×2×2×1

Common factors of 144, 108, 72, 48 = 3 × 2 × 2 × 1 = 12

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Number of yellow roses in each bunch = \frac{48}{12}=4

Number of purple roses in each bunch = \frac{72}{12}=6

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3 years ago
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