3 years ago

How to solve this c=5/9(F-32)

Mathematics

1 answer:

Alex777 [14]3 years ago

4 0

The answer is c= 100°C most definitely,

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Which would be the best method to use to solve the following equations? Explain your reasoning.

o-na [289]

A. square root property

$3x^2-192=0\\x^2-66=0\\x^2=66\\x= -\sqrt{66} or \sqrt{66}$

it has one value with x which is x^2 and it cn be easily solved without having to factorise, quadratic formula cant be used as it need ax^2+bx+c=0 format

B. factorising

$x^2-x-6=0\\x^2+2x-3x-6=0\\(x+2)(x-3)=0\\x+2=0 and x-3=0\\x= -2 \\x= 3$

i just felt like this was easier to factorise than the other 2 options left

C. Completing the square

$x^2-6x-7=0\\(x-3)^2=0\\x= -1\\x= 7$

same reason personal preference

D- Quadratic

$x^2-17x-7=0\\x=\frac{-(-17)+\sqrt{(-17)^2-4(1)(-7)} }{2(1)} \\x=\frac{-(-17)-\sqrt{(-17)^2-4(1)(-7)} }{2(1)}\\x=17.4\\x=-0.402$

the 17 kinda threw me off and i didnt wanna get on factorising or doing completing the square so quadratic formal

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What is the median for 6.0 6.0 7.0 7.0 8.0 9.0

Vladimir79 [104]

The word median means middle.

The median is 7.0 because it’s in the middle of the following numbers.

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Bookshelf is 51 inches tall how tall is it in feet

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The bookshelf is 4'3" tall. There is 12 inches in a foot twelve times 4 is 48. 48 plus three is fifty-one.

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This number is in scientific notation. 2. 4 × 10-4 Convert the number into standard notation. What is the value? 2. 4 × 10-4 =.

Dimas [21]

2.4x10^-4 = 0.00024

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