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elixir [45]
3 years ago
11

To convert 3 square feet to square centimeters, multiply 3 by 9.29 × 10-2 True or False

Mathematics
2 answers:
marshall27 [118]3 years ago
7 0
It is false because what you need is to multiply 3 x 929.03 and then you get the right value. That is the reason why.
Black_prince [1.1K]3 years ago
5 0

Answer:

False.

Step-by-step explanation:

To Convert 3 square feet to square centimeter.

Use conversion:

1 square feet = 929.03 square centimeter

Now:

Convert 3 square feet to square centimeter

Using given conversion:

we have;

\text{3 square feet} = 3 \times 929.03 \text{square centimeter}

we can write this as:

⇒\text{3 square feet} = 3 \times 9.2903 \times 10^{2} \text{square centimeter}

Therefore, the given statement is False, to convert  3 square feet to square centimeters, you need to multiply 3 by  9.2903 \times 10^{2}

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Grade 12<br>mathematics<br>(√98-√50)² ​
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8

Step-by-step explanation:

Two different approaches:

<u>Method 1</u>

Apply radical rule √(ab) = √a√b to simplify the radicals:

√98 = √(49 x 2) = √49√2 = 7√2

√50 = √(25 x 2) = √25√2 = 5√2

Therefore,  (√98 - √50)² = (7√2 - 5√2)²

                                         = (2√2)²

                                         = 4 x 2

                                         = 8

<u>Method 2</u>

Use the perfect square formula: (a - b)² = a² - 2ab + b²

where a = √98   and   b = √50

So            (√98 - √50)² = (√98)² - 2√98√50 + (√50)²

                                      = 98 - 2√98√50 + 50

                                      = 148 - 2√98√50

Apply radical rule √(ab) = √a√b to simplify radicals:

√98 = √(49 x 2) = √49√2 = 7√2

√50 = √(25 x 2) = √25√2 = 5√2

Therefore,     148 - 2√98√50 = 148 - (2 × 7√2 × 5√2)

                                                 = 148 - 140

                                                 = 8

4 0
3 years ago
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