Which of the following is an example of an open equation?
An open equation is an equation with at least one variable.
Therefore, 5x + 7 = 12 is an open equation.

Which of the following equations has 3 as a solution
z ‒ 15 = ‒12
z = -12 + 15 = 3

Is (1, 5) a solution to the equation y = x – 2?
5 ≠ 1 - 2
-5 ≠ -1
no

Is (–2, –6) a solution to the equation y = 3x?
-6 = 3(-2)
yes

Which of (3, 5), (4, 6), (5, 7), and (6, 8) are solutions to y = x + 2
5 = 3 + 2
6 = 4 + 2
7 = 5 + 2
8 = 6 + 2
all

Which equation would be used to generate the data in the following table?
x y
1 8
2 16
3 24
4 32
y = 8x

On a treadmill, you burn 11 calories in 1 minute, 22 calories in 2 minutes, 33 calories in 3 minutes, and so on. How many calories do you burn in 10 minutes?
11 x 10 = 110 calories

8 0

3 years ago

y varies inversely with x. If x is 2.3 when y is 5.1, what is k, the constant of inverse variation? Round your answer to the nea

snow_tiger [21]

$\bf \qquad \qquad \textit{inverse proportional variation}
\\\\
\textit{\underline{y} varies inversely with \underline{x}}\qquad \qquad y=\cfrac{k}{x}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
x=2.3\\
y=5.1
\end{cases}\implies 5.1=\cfrac{k}{2.3}\implies (5.1)(2.3)=k$

6 0

3 years ago

Read 2 more answers