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3 years ago

What value of r makes the equation true?

2 answers:

7 0

The answer would be A. -0.86 because if you plug in -0.86 for r then add -0.86 and 0.27 then you would get the correct answer which would be -0.58. :)

Vlad [161]3 years ago

5 0

You subtract 0.27 from both sides
r=-0.59-.27
.59-.27=-.86
R=-0.86
The answer is A

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Its worth 25 please help and show work

melamori03 [73]

9514 1404 393

Answer:

3) y = √10

4) x = 5√2

Step-by-step explanation:

The side ratios of an isosceles right triangle (one of the "special" right triangles) are ...

1 : 1 : √2

So, for some multiplier k, they can be made to match the sides in your triangles.

3) 1·k : 1·k : k√2 = √5 : √5 : y

Clearly, k = √5, so ...

y = (√5)(√2)

y = √10

4) k : k : k√2 = x : x : 10

k = 10/√2 = (5√2)/2

k = x = (5√2)/2

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2 years ago

The point (3, 5) is reflected across the y-axis.

NeX [460]

(-3,5)

X coordinate becomes negative

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3 years ago

What is the direct linear variation equation for the relationship?

defon

$\bf \begin{array}{cccccclllll}
\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\
\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\
y&=&{{ K}}&\cdot&x
\\ \\
&& y={{ K }}x
\end{array}
\\ \quad \\

\begin{cases}
y=4\\
x=12
\end{cases}\implies y=Kx\implies 4=K\cdot 12$

solve for "K", to see what "K" is, or the "constant of variation",
once you found K, plug it back in y=Kx, and that's the equation

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2 years ago

Which number(s) below belong to the solution set of the equation? Check all

Brilliant_brown [7]

Answer:

Step-by-step explanation:

x + 6 = 45 <em>subtract 6 from both sides</em>

x + 6 - 6 = 45 - 6

x = 39

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3 years ago

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Vika [28.1K]

Answer:

c.) 4x^2y

Step-by-step explanation:

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3 years ago