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2 years ago

13

Rachel bought a sweater at the sale price of $38. The original cost of the sweater was $52. What percent represents the discount

that Suzanne received when buying the sweater?

1 answer:

pentagon [3]2 years ago

3 0

Answer:77

Step-by-step explanation:

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Find the inverse of the function x2 + y2 = 4 and the domain of the inverse for 0 ≤ x ≤ 2.

alexandr402 [8]

To get the inverse "relation" of an expression, we first off, do a quick switcharoo of the variables, and then solve for "y", so let's proceed,

$\bf x^2+y^2=4\qquad inverse\implies \boxed{y}^2+\boxed{x}^2=4
\\\\\\
y^2=4-x^2\implies y=\pm\sqrt{4-x^2}$

and yes, the domain for the range 0 ⩽ x <span>⩽ 2, let's get instead the "range" of the original function,

</span> $\bf x^2+y^2=4\implies 0^2+y^2=4\implies y=\pm\sqrt{4}\implies \boxed{y=\pm 2}
\\\\\\
x^2+y^2=4\implies 2^2+y^2=4\implies 4+y^2=4\implies \boxed{y=0}\\\\
-------------------------------\\\\
\stackrel{\textit{range of original}}{-2\le y \le 2}~~=~~\stackrel{\textit{domain of its inverse}}{-2\le x \le 2}$ <span>
</span>

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2 years ago

Find the missing side

Lapatulllka [165]

Answer:

Step-by-step explanation:

$\sqrt{61}$

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6.00 as a mixed number or fraction in simplest form

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Okay, are there any choices?

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3 years ago

The top of a rectangular table has an area of 11 square feet. It has a length that is 3.5 feet more than the width. Find the dim

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Step-by-step explanation:

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This means that w=2, and thus the length is 2+3.5=5.5

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