Recent questions tagged linear-equations

$\qquad x-3y=10$ <br> In the xy plane, the graph of which of the following equations is perpendicular to the graph of the equation above ?

asked Dec 4, 2019 by priyanka.clay6

1 answer

$y \leq 3x+1,\;x-y>1,$ which of the following ordered pairs $(x,y)$ satisfies the system of inequalities below ?

asked Dec 4, 2019 by priyanka.clay6

1 answer

Kathy has two summer jobs. She works as a beautician, which pay $\$10 $ per hour and she works at the billing counter for a supermarket, which pays her $\$10.50$ per hour. She can work no more than 20 hours per week, but she wants to earn at least $\$250$ per week. Which of the following inequalities represents this situation in terms of $x$ and $y$ where $x$ is the number of hours, she works as a beautician and $y$ the number of hours, she works for the super market ?

asked Dec 3, 2019 by priyanka.clay6

1 answer

Simplify $(x^{4n-m})\large(\frac{1}{x^3})^{m+n}$

asked Dec 3, 2019 by priyanka.clay6

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If $\large\frac{3x-1}{b}=4$ and $b=2$, what is the value of $x$ ?

asked Dec 3, 2019 by priyanka.clay6

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$(h^2+6hk-7k^2)-(3h^2+6hk-10k^2)$

asked Dec 2, 2019 by priyanka.clay6

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Catherine is twice as old as her daughter. Twelve years ago she was three times as old as her daughter. Then the age of Catherine is

asked Dec 1, 2019 by priyanka.clay6

1 answer

Which of the following is the graph of a line perpendicular to the line defined by the equation $2x+5y=10 ?$

asked Dec 1, 2019 by priyanka.clay6

1 answer

asked Nov 28, 2019 by priyanka.clay6

1 answer

A plumber charges a one-time site visit fee to evaluate a potential job. If he accepts the job, he charges an hourly rate plus the cost of any materials needed to complete the job. He also charges for tax, only on the cost of the materials. If the cost of completing a job that takes $'x'$ hours is given by the function $c(x) = 50x + 1.25 (83.5) + 75$, then the term $1.25(83.5 )$ represents

asked Nov 28, 2019 by priyanka.clay6

1 answer

The simplified expression of $(3x^4+x^3-12)+(x^4-x^3+x^2-6)$ is

asked Nov 28, 2019 by priyanka.clay6

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If $4x-y=16,$ what is the value of $\large\frac{16^x}{2^y}$?

asked Nov 28, 2019 by priyanka.clay6

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$-\dfrac{1}{5} x -20 \geq -5$ implies

asked Nov 27, 2019 by priyanka.clay6

1 answer

If $5x-19<16$, then what can be the value of $x$?

asked Nov 27, 2019 by priyanka.clay6

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Sarah is 92 years old and she graduated from high school in 1930 at the age of 17. Her graduating class had a half century reunion. During what year was it held ?

asked Nov 27, 2019 by priyanka.clay6

1 answer

If $2a+3=6$, then $\dfrac{3}{4a+6}=$

asked Nov 26, 2019 by priyanka.clay6

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$\begin{align}\frac{48 x^2d^2y}{-12 x^6dy^3} =\end{align}$

asked Nov 26, 2019 by priyanka.clay6

1 answer

Which of the following is not a solution of the inequality $3x-5 \geq 4x-3$

asked Nov 24, 2019 by priyanka.clay6

1 answer

If $a=3\sqrt{2}$ and $4a=\sqrt{2}x$, what is the value of $x$ ?

asked Nov 23, 2019 by priyanka.clay6

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Which of the following is equivalent $(27 x^9 y^6z^3)^{^{1/3}}$ ?

asked Nov 20, 2019 by priyanka.clay6

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Which of the following number lines represent the solutions to the inequality ? <br>

asked Nov 20, 2019 by priyanka.clay6

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For the equation $\sqrt{px+4}=x+2$ the value of $p$ is $-2$, what is the solution set of the above equation ?

asked Nov 18, 2019 by priyanka.clay6

1 answer

The graph below shows $y=2x+1$. Which of the following graph shows $(2x+1)$

asked Nov 18, 2019 by priyanka.clay6

1 answer

If $2\sqrt{x}=x-3$, what is the solution set for $x$ ?

asked Nov 17, 2019 by priyanka.clay6

1 answer

$tx-y=6$ and $vx+2y=18$. If the graph system of equations above intersect at $(-1,2)$. What is the value of $\frac{v}{t}$ ?

asked Nov 17, 2019 by priyanka.clay6

1 answer

What is the value of $'b'$ in the equation given below ?

asked Nov 16, 2019 by priyanka.clay6

1 answer

A company's estimation of cost $'c'$ which is in dollars of producting $n$ items is $c = 5n+200$. The company sells each item for $\$10$. It makes a profit when total income from selling a quantity of items is greater than the total cost of producing that quantity of items. Which of the following inequalities gives all possible values of $n$ for which the manager estimates that the company will make a profit ?

asked Nov 15, 2019 by priyanka.clay6

1 answer

If $-\frac{8}{5} < - (3x+1) < -\frac{7}{8} $, write one possible value of $3t-4$

asked Nov 15, 2019 by priyanka.clay6

1 answer

A system of three equations and then graphs in the $x-y$ plane are shown below. How many solutions does the system have ?

asked Nov 15, 2019 by priyanka.clay6

1 answer