Chapter 7: Problem 50
Evaluate the expression. \(5 \cdot 5+3 \cdot 3 \cdot 3\)
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
Simplify the variable expression. $$3 x+2 y-(5 x+2 y)$$
Use the description shown below. "Choose any number Add 10 to the number. Multiply the result by 2 Subtract 18 from the result. Multiply the result by one half Subtract the original number." Write a linear equation for the description. Let \(x\) represent the number that is chosen and let \(y\) represent the final result.
You know how to solve the equation \(\frac{1}{2} x+2=\frac{3}{2} x-12\) algebraically. This equation can also be solved graphically by solving the linear system. $$ \begin{aligned} &y=\frac{1}{2} x+2\\\ &y=\frac{3}{2} x-12 \end{aligned} $$ a. Explain how the linear system is related to the original equation. b. Solve the system graphically. c. Check that the \(x\) -coordinate from part (b) satisfies the original equation \(\frac{1}{2} x+2=\frac{3}{2} x-12\) by substituting the \(x\) -coordinate for \(x\)
Solve the inequality. Then graph its solution. $$-5<-x \leq-1$$
Write the equation in slope-intercept form. Then graph the equation. $$8 x-4 y+16=0$$
What do you think about this solution?
We value your feedback to improve our textbook solutions.
