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2 years ago

Whats wrong with my answers?

Mathematics

1 answer:

malfutka [58]2 years ago

8 0

77a)

$y=0.5x-2\implies y=\cfrac{x}{2}-2\implies \stackrel{x-intercept}{0=\cfrac{x}{2}-2} \\\\\\ 2=\cfrac{x}{2}\implies 4=x\qquad \qquad \boxed{(4~~,~~0)} \\\\\\ \stackrel{y-intercept}{y=0.5(0)-2}\implies y=-2\qquad \qquad \boxed{(0~~,~~-2)}$

77b)

$y=-0.4x+2\implies y=-\cfrac{4x}{10}+2\implies y=\cfrac{2x}{5}+2 \implies \stackrel{x-intercept}{0=\cfrac{2x}{5}+2} \\\\\\ -2=\cfrac{2x}{5}\implies -10=2x\implies \cfrac{-10}{2}=x\implies -5=x~\hfill \boxed{(-5~~,~~0)} \\\\\\ \stackrel{y-intercept}{y=-0.4(0)+2}\implies y=2\qquad \qquad \boxed{(0~~,~~2)}$

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9514 1404 393

Answer:

C = (5/9)(F -32)
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Step-by-step explanation:

Starting with the formula for degrees Fahrenheit, we can solve for degrees Celsius.

F = 32 +9/5C

F -32 = (9/5)C . . . . . subtract 32

(5/9)(F -32) = C . . . . multiply by the inverse of the coefficient of C

The formula for Celsius temperature from Fahrenheit temperature is ...

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For F = 50, the corresponding Celsius temperature is ...

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3 years ago

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3 years ago

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The product of a complex number and its conjugate is (a + i b) · (a - i b), where a and b are real numbers, and the result for the complex number 2 + i 3 is 13.

<h3>What is the multiplication of a complex number and its conjugate</h3>

Let be a complex number a + i b, whose conjugate is a - i b. Where a and b are real numbers. The product of these two numbers is:

(a + i b) · (a - i b)

Then, we proceed to obtain the result by some algebraic handling:

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To learn more on complex numbers: brainly.com/question/10251853

#SPJ1

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2 years ago

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MAXImum [283]

Answer:

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Step-by-step explanation:

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3 years ago