10/10/17

Find an identity for cos(4t) in terms of cos(t)cos⁡(t).

Any identity please? I'm not sure which one fits this problem.

Given the function f(x) = x^2 and k= -1, which of the following represents a function opening downward?

A:f(x)+k b: kf(x) c: f(x+k) d: f(kx)  

10/10/17

Kennedy had several years’ experience working in the medium of television, but Nixon did not.

 john f kennedys inaugural speech

What is the remainder when 3x2 + 6x - 4 is divided by x + 2

3x to the 2 power plus 6x minus 4 is divided by x plus 2

10/10/17

the quotient of a number and -2 is the same as the sum -4 and 10

 One step equation word problems  

10/10/17

How do you factor 6a^2-a-12

I need help with this problem. I do not get it. 

Solve the following inequalities: a. |-2x+4|-5<10 b. 7+2|2-7x|>9

I'm not sure if I'm doing this right    For a. I got x>11/-2   or    x<19/2     interval notation:  (-infinity, infinity)   For b. I got   x<1/7     or     x>3/7      interval... more

probability

A student takes a ten-question true-false quiz, but did not study and randomly guesses each answer. Find the probability that the student passes the quiz with a grade of at least 40% of the... more

Find the equation of the line with x-intercept (-5,0) And y-intercept (0,-3)

Find the equation of the line with x-intercept and y-intercept  y=

Cross Sections and Area

A rain gutter is made from sheets of aluminum that are 1212 inches wide by turning up the edges to form right angles. Determine the depth of the gutter that will maximize its cross- sectional area... more

10/09/17

growth and decay?

The price of a gallon of gas in 2009 was $1.78 and it has increased 31% per year.   a. Find an equation to model the gas price since 2009.   b. According to your model, what is the average cost... more

10/09/17

The graph B goes through (0,0) and (4,300)

Going to college in 18years . First person saves $80 every month. the Graph of the second person go through (0,0) and (4,300) . What’s the total amount saved ?
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10/09/17

athe constellations were picture in the night sky?

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An Egyptian tomb

A tomb inside the great pyramid  

10/09/17

angela has twelve fewer record that greg, together they heve 86 records, how many recoreds does angela have

we are trying to find out how many records angela has and we need the word problem equatuon    

Rick wants to buy a tool set with original price $165. Next week the tool set will be on sale for $40 off.

Solve applications with discount or mark up. Need to know how to solve it step by step.

10/09/17

The door in a room is 8 ft tall.

The door in a room is 8 ft tall. An architect's model of the same door is 2 in. high. What is the ratio of the height of the model to the real height?

10/09/17

solve x^5-3x^3+2x^2-3>0

can i solve this inequality without a graphing calculator?

10/09/17

Suppose 2500 students

suppose 2500 students take a college exam the scores have a normal distribution with mean is 52 points and standard deviation 11 points for a score of 77 what is the z value

10/09/17

Four loaves of bread cost rupees 52. what will be the cost of a dozen such loaves

It's from ratio and proportion chapter 9 class 7

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