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Question 1007101: Three times a first number decreased by a second number is 3.the first number increases by twice the second number is 15.find the numbers
Click here to see answer by addingup(3677)

Question 1007091: in a class of 30 students, 18 students study history, 16 study geography and 3 study neither subject. how many students undertake geography but not history
Click here to see answer by ikleyn(52781)

Question 1007163: Find the domain and the range of the relation and determine whether it is a function.
{(7,2),(-6,-4),(2,-1),(4,-8)}
Click here to see answer by fractalier(6550)

Question 1007165: Determine whether the relation is a function. Explain.
x=1
Click here to see answer by fractalier(6550)

Question 1007164: Decide whether y is a function of x.
y=-2x-1
Click here to see answer by fractalier(6550)

Question 1007167: Given the function f(x)=|x+7|, find each of the following,
f(8)
f(-3)
f(0)
Click here to see answer by fractalier(6550)

Question 1007166: Given the function f(x)=x^2-x+1, find each of the following.
f(10)
f(-7)
f(0)

Click here to see answer by fractalier(6550)

Question 1007469: Ten painters working 8 hours daily take 15 days to paint 3 houses of 4 rooms each.How many painters working 6 hours daily for 25 days will be required to paint 12 houses of 3 rooms each?
Click here to see answer by ikleyn(52781)

Question 1007540: Given the function f(x)= sqrt (7-5x)
a. find the inverse f^-1(x)
b. Determine (F o f^-1)(x)
Click here to see answer by fractalier(6550)

Question 1007699: a retailer employs a pricing scheme where the ticketed price of items in the store is made up in the ratio, Cost :profit : GST = 7:3:1. for an item costing $35 what is the ticketed price

Click here to see answer by stanbon(75887)

Question 1007764: Solve the equation by using the square root property. Simplify all radicals.
(3k+5)^2-27=0
Click here to see answer by MathLover1(20849)

Question 1007765: Solve the equation by using the square root property. Simplify all radicals.
2x^2=7
Click here to see answer by MathLover1(20849)

Question 1007770: Find the length of the third side of the right triangle. Give an exact answer and an approximation to three decimal places.
a=19
b=unknown
c=26

Click here to see answer by fractalier(6550)

Question 1007769: Simplify the radical. Assume all variables represent nonnegative real numbers.
sqrt225m^17n^8

Click here to see answer by fractalier(6550)

Question 1007769: Simplify the radical. Assume all variables represent nonnegative real numbers.
sqrt225m^17n^8

Click here to see answer by MathLover1(20849)

Question 1007760: Given the function f(x)= |x+4|, find each of the following
f(7), f(-8), f(0)
Click here to see answer by fractalier(6550)

Question 1007766: Decide whether the following equation defines y as a function of x.
y=17sqrt x
a) Yes, because each value of y leads to a unique value of x
b) No, because for some values of x there are two values of y
c) No, because for some values of x there is no value of y
d) Yes, because each value of x leads to a unique value of y
Click here to see answer by fractalier(6550)

Question 1007768: Determine whether the relation is a function. Explain
x=5
a) The graph of the relation is a horizontal line and every vertical line intersects its graph at only one point.
b) The graph of the relation is a horizontal line and so there is a vertical line x=a,that intersects its graph at more than one point.
c) The graph of the relation is a vertical line and every vertical line intersects its graph at only one point.
d) The graph of the relation is a vertical line and so there is a vertical line x=a, that intersects its graph at more than one point.

Click here to see answer by MathLover1(20849)

Question 1007763: Find the domain and the range of the relation and determine whether it is a function.
{(6,2),(-2,-4),(2,-1),(5,-7)}
Click here to see answer by fractalier(6550)

Question 1007763: Find the domain and the range of the relation and determine whether it is a function.
{(6,2),(-2,-4),(2,-1),(5,-7)}
Click here to see answer by It is costly(175)

Question 1007798: Solve using the square root method.
(x-19)^2=20
Click here to see answer by josgarithmetic(39617)

Question 1007799: Find the square root.
sqrt-169
Click here to see answer by fractalier(6550)

Question 1007813: What are the critical values on the graph of y = x3 � 12x + 1?
x = �2, 0, 2
x = �2, 2
x = �4, 4
x = �3.42, 0, 3.42
Click here to see answer by ikleyn(52781)

Question 1007809: The maximum value of f(x) = x3 � 3x2 � 9x + 2 on the interval [0, 6] is
2
56
135
There is no maximum on [0, 6]
Click here to see answer by ikleyn(52781)

Question 1007810: Which one of the following statements is true?
If f is continuous on a closed interval [a, b], then f attains an absolute maximum value and f attains an absolute minimum inside the interval [a, b].
If f ′′(c) = 0, then x = c is an inflection point on the graph of f(x).
If f ′′(x) < 0 on the interval (a, b), then f is concave up on the interval (a, b).
None of these are true.
Click here to see answer by rothauserc(4718)

Question 1007808: Find the x-coordinate of the point(s) of inflection on the graph of y = x3 � 12x2 � 5.
x = �2
x = 4
x = 2
x = 12
Click here to see answer by Fombitz(32388)

Question 1007345: 2+9*9-a+b
Click here to see answer by fractalier(6550)

Question 1007829: A child is running on a moving sidewalk in an airport. When he runs against the sidewalk's motion, he travels
91ft in 13 seconds. When he runs with the sidewalk's motion, he travels
195ft in the same amount of time. What is the rate of the child on a still sidewalk and what is the rate of the moving sidewalk?
Click here to see answer by fractalier(6550)

Question 1007440: In a camp,50 men have enough food for 45days.Some of the men leave the camp and the food will now last the remaining men for 75days.How many men left the camp?
Click here to see answer by fractalier(6550)

Question 1007069: Ryan at customer electronic sale person earns a base salary of 1400 per month and a commission of 6% on the amount of sales he makes one month one receives a $1,760 paycheck find the amount of his sales for the month
Click here to see answer by fractalier(6550)

Question 1008089: A house on the market was valued at
$288,000
. After several years, the value decreased by
19%
. By how much did the house's value decrease in dollars? What is the current value of the house?
Click here to see answer by Boreal(15235)

Question 1008092: The next model of a sports car will cost 4.3%more than the current model. The current model costs
$39,000. How much will the price increase in dollars? What will be the price of the next model?
Click here to see answer by Boreal(15235)

Question 1008096: The next model of a sports car will cost 4.3% more than the current model. The current model costs
$39,000. How much will the price increase in dollars? What will be the price of the next model?
Click here to see answer by stanbon(75887)

Question 1008094: The next model of a sports car will cost
4.3%
more than the current model. The current model costs
$39,000
. How much will the price increase in dollars? What will be the price of the next model?
Click here to see answer by stanbon(75887)

Question 1008093: The next model of a sports car will cost 4.3%more than the current model. The current model costs $39,000
. How much will the price increase in dollars? What will be the price of the next model?
Click here to see answer by stanbon(75887)

Question 1008099: Last year, Chris opened an investment account with
$7800. At the end of the year, the amount in the account had decreased by
24.5%. How much is this decrease in dollars? How much money was in his account at the end of last year?
Click here to see answer by fractalier(6550)

Question 1008098: Last year, Chris opened an investment account with
$7800
. At the end of the year, the amount in the account had decreased by
24.5%
. How much is this decrease in dollars? How much money was in his account at the end of last year?
Click here to see answer by fractalier(6550)

Question 1008100: The next model of a sports car will cost 12.5%less than the current model. The current model costs
$54,000. How much will the price decrease in dollars? What will be the price of the next model?
Click here to see answer by fractalier(6550)

Question 1008101: The wholesale price for a chair is
$188
. A certain furniture store marks up the wholesale price by
38%
. Find the price of the chair in the furniture store.
Click here to see answer by fractalier(6550)

Question 1008102: A TV has a listed price of
$671.95
before tax. If the sales tax rate is
9.5%
, find the total cost of the TV with sales tax included.

Click here to see answer by fractalier(6550)

Question 1008145: Suppose that an individual has a body fat percentage of
15.7%
and weighs
184
pounds. How many pounds of her weight is made up of fat? Round your answer to the nearest tenth.
Click here to see answer by fractalier(6550)

Question 1008140: Suppose that an individual has a body fat percentage of 15.7%and weighs 184 pounds. How many pounds of her weight is made up of fat? Round your answer to the nearest tenth.
Click here to see answer by fractalier(6550)

Question 1008147: Write 3.075 as a mixed number and as an improper fraction.
Click here to see answer by MathLover1(20849)

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