HRS - Ask. Learn. Share Knowledge. Logo

Questions in Grade College

[Done] Dr. Bhatia mixes 2 liters of a [tex]$5 \%$[/tex] saline solution with [tex]$x$[/tex] liters of a 9% saline solution. The table shows the amount of each solution used. Saline Solution Amount (liters) Concentration Total [tex]$5\%$[/tex] Saline 2 0.05 0.1 [tex]$9\%$[/tex] Saline [tex]$x$[/tex] 0.09 0.09x Mixture [tex]$2+x$[/tex] 0.08 0.64 What is the value of [tex]$x$[/tex]? A. 3 B. 4 C. 5 D. 6

[Done] Lockout/Tagout is a procedure that: A. Safeguards employees from the unexpected energization or start-up of equipment B. Involves using restraints and warnings on doors to company vehicles C. Requires the use of devices to restrain bystanders from falling into an open trench D. Keeps unauthorized personnel from entering a gas distribution facility

[Done] Which function has a range of $y<3$? $y=3(2)^x$ $y=2(3)^x$ $y=-(2)^x+3$ $y=(2)^x-3$

[Done] Read an excerpt from How the Animals Lost Their Tails and Got Them Back Traveling from Philadelphia to Medicine Hat. What is the main reason the author includes the dialogue?

[Done] Graph this equation: [tex]y=2 x+5[/tex]

[Done] Which of the following must be in writing? A. Expressed contract B. Third-party contract for health care coverage C. Implied contract D. Employment contract

[Done] Use the trade discount system shown in the table to calculate the cost of $1,000 lbs$ of product if the retail price is [tex]$4$[/tex] per pound. | | | |---|---| | Trade Discount | | | $0-100 lbs$ | $5 \%$ | | $101-400 lbs$ | $15 \%$ | | $401+ lbs$ | $30 \%$ |

[Done] Use vector operations to draw the resultant vector. b) Draw $2 u -\frac{1}{3} v$.

[Done] A 95.0 g sample of copper $\left( c _y=0.20 J /{ }^{\circ} C \cdot g \right)$ is heated to $82.4^{\circ} C$ and then placed in a container of water $\left(c_y=4.18 J /{ }^{\circ} C \cdot g \right)$ at $22.0^{\circ} C$. The final temperature of the water and the copper is $25.1^{\circ} C$. What was the mass of the water in the original container? Assume that all heat lost by the copper is gained by the water. Use the formulas below to help in your problem-solving. $\begin{aligned} -q_{\text {mas }} & =q_{\text {wate }} \\ -c_m m_m \Delta T_m & =c_w m_v \Delta T_w $\end{aligned}$ A. 0.246 g H _2 O B. 4.73 g H _2 O C. 84.0 g H _2 O D. 36,700 g H _2 O

[Done] Which ordered pairs make both inequalities true? [tex] \begin{array}{l} y\ \textless \ 5 x+2 \\ y \geq \frac{1}{2} x+1 \end{array} [/tex]