Kimmie

If sin a = 3/5 when Pi/2<a<Pi and cos B = -12/13 when Pi<B<3Pi/2, then what is the value of sin(a+b)? I don't get the question... Help appreciated.

15 years ago

Solve for: -20 <= 3x - 7 <= -2 The solution is xl __<= x <=__

15 years ago

A batch of concrete is made by mixing 1 part cement, 2.5 parts sand, and 3.5 parts gravel. How many pounds of sand and gravel are needed to make 300 pounds of cement?

15 years ago

How would I express the coordinates for y20 by x(-20)

14 years ago

What are the special challenges of criterion contamination and what would be the effects on employees and employers if these challenges are not addressed?

14 years ago

What does it mean to refer to a 20 in tv set or a 25 in set?Such units refer to the diagonal of the screen. A 35 in unit also has a width of 28 in. What is it's height?

14 years ago

You issue a $120,000 bond at par on March 31 due in 10 years that pays 11%. You pay interest on September 30. You pay off the bond ten years later. Assume that the company makes no adjusting entries. What journal entries should be recorded to issue the bo...

12 years ago

On March 3, a customer gives you $1800 cash for services not yet performed. At the end of the month, only $600 of services are performed. In preparing the March statement, all $1800 was listed as revenue. What errors would this cause? What principles are...

12 years ago

An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its...

11 years ago

What would be the final temperature of a mixture of 50 g{\rm g} of 17∘C^\circ C water and 50 g{\rm g} of 44∘C^\circ C water? I have no clue where I should even begin please help.

11 years ago

The weight of the atmosphere above 1 m2{\rm m}^{2} of Earth's surface is about 100,000 N{\rm N}. Density, of course, becomes less with altitude. But suppose the density of air were a constant 1.2 kg/m3{\rm kg}/{\rm m}^{3}. Calculate where the top of the a...

11 years ago

Hey, So a runner wants to run 10.0 km. She knows that her running pace is 7.5 m per hour. How many minutes must she run? Can you explain it?

11 years ago

Simplify (3x-2)^3 - (4x+5)^2 Can you show it step-by-step please

11 years ago

Factor completely: A. 3x^3/2 -9x^1/2 +6x^-1/2 B. x^3 y -4xy

11 years ago

Given the graph of y=f(x) 1. y = (-f) **I think this is that you reflect across the x-axis. 2. y = f(-x) = f(x) even I'm not sure. 3. y = -f(x) = f(-x) odd Not sure either.

11 years ago

f(x)=2x; -1(is less than or equal to) x (less than or equal to) 5 Find the domain of the function.

11 years ago

Suppose that a biologist states that the average height of undergraduate students at your university is 205 cm plus or minus a standard deviation of 17 cm. What does this mean? Does it mean that the height of undergraduates at the university ranges from 1...

11 years ago

Find the maximum and minimum value of the quadratic function g(x) = 2x^2 + 6x + 3

11 years ago

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants? 2Na(s)+Br2(g) ---->2NaBr(s) 1. 2mol Na, 2mol Br2 2. 1.8mol Na, 1.4mol Br2 3. 2.5mol Na, 1mol Br2 4. 12.6mol Na, 6.9 mol Br2

11 years ago

rewrite in standard form f(x)=x^2 -x-6

11 years ago

consider mixing 3.5L of co2 and 1.8L of h2o at 35C and 740mm Hg. determine the mass of the unbalanced reaction. CO2 + H2O = C4H10 + O2

10 years ago

Capacitor X is charged to a potential difference 68 V by a battery. It is disconnected from the battery and then connected in parallel to an uncharged 12 µF capacitor. A voltage of 20 V is measured across the parallel combination. Calculate the capacitanc...

9 years ago

Thanks!

15 years ago

I figured it out, and actually you multiply the 2.5 by 300 and then the 3.5 by 300 to get the amount of sand and gravel!!

15 years ago

Sorry it must have been a mistake. I would not do that intentionally and I realize there are few people to help and the help isnt instant.

14 years ago

Thank you so much. Sorry if you thought I was being impatient. I have no clue how I managed to do that. I will be careful to make sure it doesn't happen again. Thanks again.

14 years ago

Thank you for the suggested sites, they were a tremendous help. I was able to understand what criterion defiecncy actually was and how the challenges would affect both the employee and employer if not addressed.

14 years ago

Thank you Ms. Sue, I can now understand what it was I was looking for. I kept thinking square and not seeing I was actually measuring a right triangle. Thanks again!

14 years ago

it's for calculus

11 years ago

Follow the order of operations. 8 x [5 + (18-7)] ÷ 4 First, the parenthesis, (18-7) = 11, so 8 x [5+11] ÷ 4 Next, the parenthesis again, (5+11)=16, so 8 x (16) ÷4 Multiplication, 8 x (16) = 128, so 128 ÷ 4 Finally, division, 128 ÷ 4 = 32 so your answer is...

11 years ago

y = 3x 4 - 2x 2 + x - 3 factor (3x^4 -2x^2) (x-3) Factor out x^2 from the first, so you have (x^2) (3x^2 - 2) (x-3), so x^2=0 3x^2 - 2 = 0 x-3=0 So how many zeros can you get after you solve these?

11 years ago

No because it 117 and that not enough

2 years ago