# Posts by Katya

Total # Posts: 16

**Math**

Given that Force 1 = 70 pounds and Force 2 = 120 pounds , find the angle between the forces if the magnitude of the resultant force is 90 pounds . Round answer to the nearest degree. A) 48° B) 40° C) 53° D) 45° E) 60° I think it is answer B

**economics**

productivity....as a result of the ..... .... .

**Math11U**

Simplify each trigonometric expression a) Sin(theta)Cot(theta)-Sin(theta)Cos(theta) c)(sin x + cos x)(sin x - cos x)+ 2 cos(squared)x

**Math11U**

Determine the maximum or minimum value. Use at least two different methods. y=3x(x-2)+5

**Math11U**

A company has been selling 1200 computer games per week at $18 each. Data indicates that for each $1 price increase, there will be a loss of 40 sales per week. It costs $10 to produce each game. a) State the revenue function b) State the cost function c) State the profit ...

**geography**

what are two facts about Aswan High Dam and its impact on the area and two o pinions about that would most likely be shared by some residence of the area?

**Quick Spanish #2**

De postre tendremos: pastel de chocolate, helado y pay.

**Quick Spanish**

Bienvenido! Estas invitado a la fiesta de James y Jason

**Algebra I**

A local gym charges nonmembers $8 per day to use the voleyball courts. Members pay a yearly fee of $150 and $2 per day to use the voleyball courts. Write and solve an equation to find how many days you must use the voleyball court to justify becoming a member. Can you please ...

**Algebra I**

The sum of three numbers is 147. The second number is 4 more than two times the first number. The third number is five less than three times the first number. Find the three numbers. Can you please solve it? I have no idea how to do this. Thanks a lot for any help!

**chem**

Right hand side of cell was titrated with Nh3 while monitoring cell voltage: Ag(s)IAg^+ (aq, 0.1 M, 25.0 mL)II Ag^= (aq, 0.1 M, 75.0 mL)I Ag(s) With 1.52 M ammonia titrant, the end point was observed at 9.8 mL. The measured cell voltage was near -0.15 V at the end point. A) ...

**chem**

what is the cell voltage when saturated calomel and Pt electrodes are dipped into a solution containing 0.00217 M Br2 (aq) and 0.234 M Br^-

**chem**

The voltage of the cell Pt (s) I H2 ( 1 bar)I RNH2(0.1 M), RNH3+ Cl(0.05 M)IIS.H.E. is 0.49 V. Find kb of the base, RNH2

**chem**

consider the cell Pt(s)I H2 (g. 0.100 bar)I H+ (aq, pH= 2.54)IICl^- ( aq, 0.200 MI Hg2Cl2(S)IHg (l)IPt(s) a. write a reduction reaction and nernst equation for each half- cell. For the Hg2Cl2 half reaction, E^0 = 0.268 V b. Find E for the net cell reaction and state whether ...

**chem**

evaluate E^0 for the half reaction: CO2 (g) + 2H + 2e^- <--> HCOOH ( Aq)

**Chem**

a dibasic compound , B, has pkb2 = 6.00. Find the fraction in the form of BH+ at pH 9.00