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HACTEHA [7]
3 years ago
5

The area of San Bernardino County, California, is the largest county in the United States, is about 3 to the 9 power square mile

s.Write this as an expression.What is the area of San Bernardino County?
Mathematics
2 answers:
Fantom [35]3 years ago
8 0
19683 square miles of land in there so 3^9 is 19683

zlopas [31]3 years ago
4 0

Answer:

An expression = 3^{9}

The area of San Bernardino County is 19,683 square miles.

Step-by-step explanation:

The are of San Bernardino County is about 3 to the 9 power square miles.

Here 3 to the 9 power means " base 3 and the exponent is 9"

= 3^{9}

This means we have to multiply 3 itself by 9 times.

3^{9} = 3.3.3.3.3.3.3.3.3

= 9.9.9.9.3

= 81.81.3

= 6561.3

= 19,683 square miles

The area of San Bernardino County is 19,683 square miles.

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A car manufacturer estimates that 25% of the new cars sold in one city have defective engine
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Answer: 672 cars will have defective engine mounds

Step-by-step explanation: 25% of 2,688 is 672

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3 years ago
If PQR is a triangle,given that /PQ\=15m, /QR\=17m and /RP\=18m.Find the area of the triangle to the nearest whole number.
nydimaria [60]

Answer:

118.3 m²

Step-by-step explanation:

Step 1. Calculate the <em>semiperimeter</em> (s).

s = (p + q + r)/2

s = (17 + 18+ 15)/2  

s = 50/2

s = 25 m

===============

Step 2. Calculate the <em>area</em> (A).

Use <em>Heron’s formula</em>:

A = \sqrt{s(s-p)(s-q)(s-r)}

A = \sqrt{25(25-17)(25-18)(25-15)}

A = \sqrt{25\times8\times7\times10}

A = \sqrt{14 000}

A = 20\sqrt{35}

A = 118.3 m²

3 0
3 years ago
30 POINTS FOR THE GENUIS WHO CAN ANSWER THIS!!
bearhunter [10]

Answer:

Answers are below in bold

Step-by-step explanation:

1) A = 1/2bh          Use this equation to find the area of each triangular base

A = 1/2(8)(6)         Multiply

A = 1/2(48)           Multiply

A = 12cm²           Area of each triangular base

2) A = L x W        Use this equation to find the area of the bottom rectangular face

A = 20 x 8          Multiply

A = 160 cm²       Area of the bottom rectangular face

3) A = L x W        Use this equation to find the area of the back rectangular face

A = 20 x 6          Multiply

A = 120 cm²       Area of the back rectangular face

4) A = L x W        Use this equation to find the area of the sloped rectangular face

A = 20 x 10         Multiply

A = 200 cm²      Area of the sloped rectangular face

5) To find the total surface area of the triangular prism, add together all of the numbers.

A = 12 + 12 + 160 + 120 + 200       Add

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6 0
3 years ago
in the tropical rain forest the average annual rainfall is about 150 inches. after 5 years about how much rain will have fallen
leva [86]

I think the answer is 750 inches of rain in 5 years.

6 0
3 years ago
Read 2 more answers
You help me i'll help you.
Pepsi [2]
Hi, I think the answer may be 2.
How I got my answer:
If x equals 18, divide 18 by 3 and you'll get 6, then divide 6 by the other 3 and your quotient should be 2.
Hope I helped!
5 0
4 years ago
Read 2 more answers
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