Wednesday

April 16, 2014

April 16, 2014

Total # Posts: 365

**trig**

thanks

**trig**

A and B are positive acute angles. if sin A=4/5 and cos B=8/17 find the value of tan (A-B) is the answer =43/100

**Trig**

If 0 ≤ x ≤ 2π, which equation is a line of symmetry for the graph of y = cos x? x = 0 x = 2π x = π y = 0

**Trig**

On the same set of axes, sketch and label the graphs of the equations y = cos 2x and y = –2 sin x in the interval 0 ≤ x ≤ 2π. How many values of x in the interval 0 ≤ x ≤ 2π satisfy the equation –2 sin x – cos 2x = 3? A.1 B.2 C....

**Trig**

In ΔABC, a = 19, c = 10, and m∠A = 111. Which statement can be used to find the value of C?

**Trig**

What is the total number of solutions for the equation 3 tan^2 A + tan A – 2 = 0 in the interval. 0 ≤ A ≤ π?

**Trig**

If the period of a cosine function is 1/3 what is the frequency of the function?

**Trig**

The number of values in the interval –π ≤ x ≤ π that satisfy the equation sin x = 2 cos x is 1 2 3 4 0

**Math**

Which equation is equivalent to 3 ln 2 – ln 4 + 5 ln x = ln 3 + 2 ln 5? ln 2x5 = ln 75 ln (5x + 2) = ln 75 ln 2x5 = ln 13 ln (5x + 4) = ln 96

**Math**

If f(x) = 2/x+3 and g(x) = 1/x then (g ° f)(x) is equal to

**Math**

Which equation is equivalent to 3 ln 2 – ln 4 + 5 ln x = ln 3 + 2 ln 5? ln 2x5 = ln 75 ln (5x + 2) = ln 75 ln 2x5 = ln 13 ln (5x + 4) = ln 96

**Math**

The endpoints of a diameter of a circle are (3, 4) and (7, –2). What is an equation of the circle?

**Math**

tan(4x − 4)° = cot(3x + 10)°

**Math**

The parents of twin boys started a college fund when the boys were 5 years old. They decided to invest $6,000 into an account that compounds quarterly at a rate of 8.6% annually. If the parents do not invest any additional money into this fund, how much will each of the boys h...

**Math**

A car was purchased for $36,730. The following equation can be used to predict the value of the car based on it age, where t stands for the time in years: A = 36730(.82)t. If the car was purchased in March 2002, what will its value be in September 2009? Round your answer to th...

**Math**

A car was purchased for $36,730. The following equation can be used to predict the value of the car based on it age, where t stands for the time in years: A = 36730(.82)t. If the car was purchased in March 2002, what will its value be in September 2009? Round your answer to th...

**Math**

The expression log 4 radical a^2/b is equivalent to Please help. Thank you

**Algebra 2**

Which circle has the largest circumference? x2 + y2 = 8 (x – 3)2 + y2 = 10 (x + 3)2 + (y + 2)2 = 4 x2 + (y – 2)2 = radical 81

**Chemistry**

Thanks

**Chemistry**

The half-life of 131I is 8.021 days. What fraction of a sample of 131I remains after 24.063 days? 1/2 1/4 1/8 1/16 Please help. Thank you

**Trig**

I got choice 3 is that correct

**Trig**

Use a graphical method to find a solution to the following system of equations in the interval –1 ≤ x ≤ 5: y = x2 – 4x + 2 y = x + 2 The solution set to this system of equations in the interval –1 ≤ x ≤ 5 is {} {(2, 0)} {(0, 2), (5, 7)} {...

**spanish**

What color is chocolate

**Global history**

Which of the following provides evidence that imperialism left a lasting impact on many colonial territories? A. Many African and Asian nations are based on former colonial boundaries. B. Many former colonies are still ruled by European governments C. Local languages are often...

**Global history **

Which of the following summarizes an effect of imperialism? A. Colonial markets were closed to manufactured goods from the colonizing power. B. Land was distributed equally among the main social classes. C. Colonial economies became devoted to manufacturing goods for the colon...

**Global history**

Thank you

**Global history**

Can you please explain why it is b and not d

**Global history**

The age of imperialism was marked by A. A decrease in the number of naval ships. B. The expansion of American political influence C. An increase interest in the plight of day laborers D. The reduction of military intervention in other countries I think the answer is b or d. Ca...

**Science**

metamorphosis

**math**

the the mode is the most repeated number,the student had confused the mode and mean

**Chemistry **

At STP 4 liters of O2 contains the same total number of molecules as 1L of NH3 2L of Cl2 8L of He 4L of CO2

**Chemisty**

At STP 4 liters of O2 contains the same total number of molecules as 1L of NH3 2L of Cl2 8L of He 4L of CO2

**Chemistry**

Thank you

**Chemistry**

Two quantities A and B are directly proportional to each other. The value of A becomes 1/3 as much. What will happen to the value of B

**Trig**

2x^2+2x>4

**Trig**

(x+1)(x-4) is greater than or equal to (x-2)^2

**Math**

Thanks

**Math**

I don't understand. Then what is the final answer

**Math**

When mn+m^2-30n^2 is divided by m-5n, what is the quotient. Thank you

**Math**

When is 15xy+9y^2+6x^2 divided by 2x+3y. Thank you

**english**

write a sentence on each of the following.[your school premises],[a day at the beach],[the city hustle] and [your saturdays].

**language arts**

Add silent parterns to the folliwing to create new words. bo_,cli_

**Math**

Thank you

**Math**

Thank you

**Math**

Is it (x-3)^2 + (y-1)^2 =16

**Math**

If the coordinates of the center of a circle are (-3,1) and the radius is 4, what is an equation of the circle

**Math**

What is the slope of a line perpendicular to the line whose equation is y=2x+7

**Algebra **

The expression 2x(y-1)-7xy+2x Please help thank you

**Algebra**

-5xy

**Algebra **

The expression 2x(y-1)-7xy+2x Please help thank you

**Algebra**

Thank you

**Algebra **

x-2/3 + x-3/2 Please help. Thank you

**Algebra**

Thanks

**Algebra**

You're welcome and thank you

**Algebra**

I think you are suppose to add the 12,500 not subtract it.

**Algebra**

I got 5500 as the answer

**Algebra**

Rod and reel inc. manufactures and sells fishing rods. The company uses the equation P= 25r - 12,500 to estimate its profit P on the sale on the fishing rods. How many fishing rods were sold if the company made a profit of 125,000? Please help. Thank you

**Math**

The capital letter F can be formed by connecting the points (0,4),(5,4),(5,2),(2,2),(2,0),(4,0),(4,-2),(2,-2),(2,-7), and (0,-7), in this order. Determine the slope of the line that passes through the origin and divides the letter F into two regions of equal areas.

**Math**

There are 900 three-digit integers. The number of three-digit integers having at least one repeated digit is also a three-digit number. If that number is represented by abc where each letter is a digit compute a-b+c.

**physics**

A 2.0-m-tall basketball player is standing on the floor a distance d from the basket, as shown in the figure below. He shoots the ball at an angle of 40.0o above the horizontal with a speed of 10.67 m/s and makes the shot. The height of the basket is 3.05 m. What is d?

**chemistry**

caculate 230 ml of 1.1 molarity HCl solution

**math-probaility**

Thank you

**math-probaility**

I don't understand it says at least one lemon, how can there be none

**math-probaility**

Sal has a bag of hard candies: 3 are lemon and 2 are grape. He ate 2 of the candies while waiting for the bus, selecting them at random one after the another. What is the probability of at least one candy was lemon?

**Math**

When constructing a cumulative histogram do you use the frequency or cumulative frequency

**History HELP!**

Describe the chain of events for a wounded soldier during the civil war; how and where they would be transported, what would happen to them, etc. (provide details!!!!) I need help.

**math**

140

**Math**

There are 5 staircases going from thr first to the second floor in school. Find the total number of ways that Andrea can go from the first floor to the second and then return to the first. Thank you

**math**

a potato chip manufacturer has been accused of shortchanging their customers with 10 ouce of bags potato chips. a sample of 50 of that company's 10 ounce bags was take, and it was found that the average weight was 9.8 ounces with a standard deviation of 0.3 ounces.can we c...

**Math**

I'm in algebra not geometry that's why I don't know them

**Math**

What is sec 43

**Math**

A kite string makes a 43 degree with the ground. The string is staked to a point 104 meters from a point on the ground directly below the kite. Find to the nearest meter the length of the kite string.

**Math**

965

**Math**

What will be the answer at the end after you square the numbers

**Math**

So what will be the answer. I am confused

**Math**

The legs of a right triangle measure 17 and 26. Find the length of the hypotenuse. Please help

**Math**

The 6

**math**

1 out of 6

**Math**

Please someone answer one of kiki's questions. I need serious help

**English**

Right

**English**

All right

**math**

8 And 3/5

**math**

8 and 3/5

**math**

It's -1

**Outline**

Ur welcome

**Outline**

No a space does not go you ident each time a little further as you go on

**Math**

Find three consecutive intergers such that the product of the first and the second is two more than three times the third.

**Math**

Find three consecutive intergers such that the product of the first and the second is two more than three times the third.

**Math**

Find three consecutive intergers such that the product of the first and the second is two more than three times the third.

**Math**

Find three consecutive intergers such that the product of the first and the second is two more than three times the third.

**Math**

Find three consecutive intergers such that the product of the first and the second is two more than three times the third.

**Math**

Find three consecutive intergers such that the product of the first and the second is two more than three times the third.

**Math**

Find 2 consecutive positive intergers such of the first and the square of the second is 19

**health**

please help

**health**

What supplement has been known to reduce symptoms of aggression and depression in patients, especially women with borderline personality disorder? A. Omega-3 fatty acids B. Vitamin K C. Folic acid D. Biotin

**Math**

In the accompanying diagram, abcd is a rectangle with ab as a diameter of semicircle o. Diagonal bd is drawn in rectangle abcd. The length of bd exceeds the length of ab by 1, and ad=5. Please help thank you

**Math**

If 20% of a number is equal to 3x, then the number is. Please help thank you

**Math**

The diameter of an atom is 2.3 x 10^ -8 centimeters. How many atoms can fit in a space .003 centimeters long, without exceeding it? Please help, thank you

**Math**

X+2 over 6 = 3 over x - 1 What is x

**History**

I think its first successful hot air balloon flight