07/21/17

A can of soda is placed inside a cooler. As the soda cools, its temperature Tx in degrees Celsius is given by the following function, where x is the number
A can of soda is placed inside a cooler. As the soda cools, its temperature T(x)in degrees Celsius is given by the following function, where x is the number of minutes since the can was placed in... more
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07/21/17

estimate numbe\r of atoms of a carbon grain with a diameter of 0.1mm
spherical grain  no  of atoms of carbon  make up of grains
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07/21/17

Are these commercial goals of a producer?
Effective advertising, To make a profit, Maintaining Brand Reputation, Using quality ingredients are these commercial goals of mcdonalds  
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07/21/17

solve for x 16^-x-6=15^-6x Write the exact answer using base-10 logarithms.
16^-x-6=15^-6xWrite the exact answer using base-10 logarithms.
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07/20/17

Use a sum or difference formula to find the exact value of the following.
sin2∏/5 cos3∏/20 + cos3∏/5 sin3∏/20    
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07/20/17

Simplify the expression by using a double-angle formula.
2sin35 cos35    the equations are together. also the 35 on both sides are degrees. 
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07/20/17

Calculus Question
Evaluate the following limit:   lim of sin(4theta)/(5theta) as theta approaches 0.   Help!?
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07/20/17

Let , (2,-3) be a point on the terminal side of θ . Find the exact values of sinθ , secθ , and tanθ .
Let , (2,-3) be a point on the terminal side of θ . Find the exact values of sinθ , secθ , and tanθ .
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07/20/17

im having trouble with these questions and i need help!
  a) One molecule of NH4NO3 produces ___molecule(s) of N2O and ___ molecules(s) of water.   b) One mole of NH4NO3 produces ___ mole(s) of N2O and ___ mole(s) of water. c) Ten molecules of NH4NO3... more
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07/20/17

Algebraic Expressions
1. What is three more than the product of five and a number 2. The quotient of two more than a number and eight 3. Seven less than twice a number
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07/20/17

Help with limit
lim x→3 (x3 − 13x2 + 51x − 63) / (x3 − 4x2 − 3x + 18) = a / 5 Find the value of a. (It is supposue to be -4. Why?)
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07/20/17

Using the quadratic formula to solve 2x^2-x=6
Using the quadratic formula to solve 2x^2-x=6
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07/20/17

According to projections through the year​ 2030, the population y of the given state in year x is approximated by State​ A:   -5x+y=11300 -138x+y=7000
The equation are listed on rows. -5x+y= 11300                                                  -138x+y=7000  
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07/20/17

If A = (1,2,3,4), B = (-2,0,2,4), and C = (0,3,5), find each of the following.
(x Ι x ∈ A and x > 2). 
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07/20/17

Calculus Question
Evaluate the following limit:   Limit of xcotx as x approaches 0.
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07/20/17

Inverse Variation: If y varies inversely with the square of x, and y is 4 when x is 16, find y when x is 64.
Inverse Variation.
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07/20/17

Decide whether the following statement makes sense or does not make sense. Explain your reasoning. (see below)
 I think D makes sense. Thoughts? Scientists at an atmospheric research center use mathematical models to learn about the climate of a given planet.   A. The statement makes sense because the... more
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07/20/17

Explain this​ statement: A​ model's predictions can only be as good as the data and the assumptions from which the model is built. (see below)
 I think it is A, but would like a little more explanation.   Book is unclear. Choose the correct answer below.A.This statement means that more data and more solid assumptions lead to better... more
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07/20/17

Time till an object hits the ground
An object is thrown upward from an initial height of h0 meters above the ground at a speed of v0 meters per second. Its height h above the ground after t seconds is given by h(t)=h0+vot-5t^2 .Write... more
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07/19/17

Calculus Question
Determine the slope of the normal line to the curve y = x+1/x at the point (2,5/2). Round to the nearest hundredth. 
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07/19/17

i need help solving for volume
A sample of oxygen occupies 11.0 mL under a pressure of 100 kPa at a temperature of 15 °C. What volume will it occupy under at 25 °C
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07/19/17

Word problems!
The common cricket can be used as a crude thermometer. The colder the temperature, the slower the rate of chirping. The table below shows the average chirp rate of a cricket at various... more
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07/19/17

I can't get word problems
A driver going down a straight highway is traveling at 70ft/sec on cruise control when he begins accelerating at a rate of 4.2 ft/sec² . The final velocity of the car is given by the function V(t)... more
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07/19/17

what is line does it pass through?
Write the equation of a line that passes through the point (-1,5) and has a slope of -7. Your answer should be given in the form y = mx + b. Write the equation of a line that passes through the... more
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07/19/17

the sum of a number and 6 is at least 15
the sum of a number and 6 is at least 15 please
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