09/19/17
finding the max of a trig function
f(x) = 5sin (-4x)-3 in the domain 0<x<2 pi
i know how to find the derivative
f'(x) = -20 cos (-4x)
but i am unsure as to how you solve this for critical...
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09/19/17
Which of the following is NOT a requirement?
Which of the following is NOT a requirement for using the normal distribution as an approximation to the binomial distribution?
Choose the correct answer below.
A.The sample is the result...
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09/19/17
Dawn and Scott pocket money
Dawn and Scott count the money they each have in their pocket. Dawn has £17.50 and the ratio of Dawn's money to Scott's money is 5:4. Dawn gives £4 to Scott. What is the new ratio between the amounts?
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09/19/17
what is the new ratio of orange to strawberry chocolates?
In a box of chocolate's there are 36 strawberry flavoured chocolates. And the ratio of orange chocolates to strawberry chocolates is 5:4. If someone eats six of the orange chocolates, what is the...
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09/18/17
Carl has 50 pieces of candy in a bag, some pieces are red and the rest are green. The ratio of red to green candies is 3:2, how many pieces of candy are green?
Carl has 50 pieces of candy in a bag, some pieces are red and the rest are green. The ratio of red to green candies is 3:2, how many pieces of candy are green?
09/18/17
The average grade for a math test was 79 with a standard deviation of 6.5. (a) If the grades are normally distributed, estimate what percentage of grades is bet
I'm not sure how to do this. please help
09/17/17
if the perimeter of a rectangle is 32 feet and tithe length of the width is 6 feet longer than the length of the height what is the area
if the perimeter of a rectangle is 32 feet and tithe length of the width is 6 feet longer than the length of the height what is the area
09/16/17
Find an angle between 0 and 2π that is coterminal with the given angle 11.
Find an angle between 0 and 2π that is coterminal with the given angle 11. I do not understand this problem at all and i have been working at it for an hour now. I am familiar with coterminal...
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09/16/17
Please help me with ratio?
In a school the ratio of male to female staff is 2:3. 1/4 of the male teachers are under 30. 40% of the female teachers are under 30. Write the ratio of under 30s to over 30s. Give your answer in...
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09/16/17
How many coins did each have originally?
Natalie has some nickels, Dirk has some dimes, and Quincy has some quarters. Dirk has five more dimes than Quincy has quarters. If Natalie gives Dirk a nickel, Dirk gives Quincy a dime, and Quincy...
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09/15/17
need one more explanation
Very small numbers are often written in exponential form using scientific notation to make them easier to multiply or divide. Explain how to apply the laws of exponents when multiplying and...
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09/15/17
standard deviation 2
In a large class of 500 students, the mean and standard deviation of a final exam are 65 and 11, respectivelyIf the grades distribution is not symmetric at least how many students have grade within...
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09/14/17
f(x) = x^4 -3 :[-2,3] solution and explanation especially what the brackets connote
please explain
09/14/17
The ratio of reds to greens was 4 to 11 and 60 percent of the greens exceeded the number of reds by 52. How many were red and how many were green?
Idk how to do this. Plz help!!!!
09/14/17
Two times one complementary angle is 6 degrees less than the second is 3 degrees. Find the angles.
find x and 90-x
09/14/17
The area (in ft2) of a rectangle that is eight times as long as it is wide; w = width of the rectangle (in ft)
This is a pre-cal problem. I need to express its given quantity in terms of the indicated variable.
09/14/17
An access ramp rises 3.2 feet over a distance of 30 feet. What is the angle of the ramp with the horizontal?
Using Trigonometric Ratios to Find Measures of Angles of Right Triangles
Use the Venn diagram to write the numbers of the correct regions
There are 3 interlocking circles in the universe, with the number 8 outside the circles. Circle A has the numbers 1,2,3 & 4 while circle B has the numbers 3,4,5,6 & Circle C 2,3,6,7 Where...
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what is highest level of measurement (nominal, ordinal, or Interval-ratio) for income
1. Determine the highest level of measurement (nominal, ordinal, or Interval-ratio) for each of the following variables. Identify the highest level at which the variable might be measured. Explain...
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09/12/17
How many muffins need to be sold to break even?
Jennys bakery sells carrot muffins at $2 and the oven costs $120 per day and the cost of making one muffin is $1.40.
09/12/17
parabola transformations
The graph of g is a horizontal shrink by a factor of 1/2 and a translation 1 unit down, followed by a reflection in the x-axis of the graph of f(x)=(x+6)^2+3. Write a rule for g. Then identify the...
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09/11/17
took crew 1 h 50 min to row 8 km upstream and back again.rate of flow of the stream was 5 km/h, what was the rowing speed of crew in still water?
It took a crew 1 h 50 min to row 8 km upstream and back again. If the rate of flow of the stream was 5 km/h, what was the rowing speed of the crew in still water?
09/10/17
Determine the following estimate without using a calculator. Then use a calculator to perform the computation necessary to obtain an exact answer.
Determine the following estimate without using a calculator. Then use a calculator to perform the computation necessary to obtain an exact answer. How reasonable is your estimate when compared to...
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