Questions on Word Problems: Evaluation, Substitution answered by real tutors!

Tutors Answer Your Questions about Evaluation Word Problems (FREE)

Question 1037997: helen is 13 years old.helens father is four years more than twice her age
Click here to see answer by jorel555(1290)

Question 1038172: Find the domain of f(x) = 1 - 4x for which f(a) = 3.
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Question 1038705: A circular mirror is surrounded by a square metal frame. The radius of the mirror is 7x. The side length of the metal frame is 21x. What is the area of the metal frame?
Click here to see answer by Alan3354(69443)

Question 1038679: a salesmen earns 5 times as much in July and 3 times as much in august as in each of the remaining months of the years. What fraction does his entire year's earnings does he earn in July and august together?
Click here to see answer by solver91311(24713)

Question 1039440: Use an algebraic equation to find the measures of the two angles described below. Begin by letting x represent the degree measure of the angle's supplement.
The measure of the angle is fourteen times greater than its supplement.
Click here to see answer by Alan3354(69443)

Question 1039446: Kiko boasted that his salary is 2000 more than twice Gary's salary.If Gary's monthly salary is defined by the function G(x)=415x+3750, where x is the number of working days in a month.
A. Determine the function of Kiko's salary (Hint: Kiko's salary is defined by K(G(x))).
B.Find Kiko's salary for August 2016.(Assume that August 2016 has 24 working holidays)
Click here to see answer by chen.aavaz(62)

Question 1040169: Soybean meal is 12% protein; cornmeal is 6% protein. How many pounds of each should be mixed together in order to get 240-lb mixture that is 99% protein?
How many pounds of cornmeal should be in the mixture?
How many pounds of soybean meal should be in the mixture?
Click here to see answer by josgarithmetic(39616)

Question 1040702:
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Question 1040797: What does each number represent in this equation?
R = 1200 + 250 sin 1/2πt
I understand R is the number of rabbits ( 1200 ) I think 250 is the number of coyotes.
What does sin 1/2πt represent?
Image of reference: https://i.imgsafe.org/584044b530.png
Click here to see answer by solver91311(24713)

Question 1040916: Find two numbers whose sum is 21 and whose difference is 11

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Question 1042101: four fifths of a number x when added to two fifths of the same no. x gives result 100. Find x?
Click here to see answer by stanbon(75887)

Question 1042713: one number is three times another and their product is equal to their sum increased by fifty five. Find the numbers
Click here to see answer by macston(5194)

Question 1043064: On Monday 30 girls and zero boys in Crescent Valley band missed practice resulting in a 2 to 5 ratio of girls to boys on Tuesday 30 girls and 40 boys miss practice resulting in a 2 to 1 ratio of girls to boys how many students are in the band
Click here to see answer by josgarithmetic(39616)

Question 1043114: If 2x - 3(x + 4) = -5, then x = ?
Click here to see answer by ikleyn(52775)

Question 1044415: d)(-x)5, e)Consider the general question (-1)n,where n is a natural(1,2,3,....)What will it evaluate to,for a given value of n? Refer to the work above in your answer.
Click here to see answer by ikleyn(52775)

Question 1045274: A courier company, Weka Couriers, currently delivers four million packages per year and estimates that this will increase by 5% each year. Its deliveries can be modelled by the equation y= 4* (1.05)^t where y is the number of packages delivered in millions, and t is number of years since 2011.
i) How many packages do you expect Weka couriers to deliver in 2012?
ii) How long will it take for the number of packages delivered to reach 8 million?
Click here to see answer by advanced_Learner(501)

Question 1045361: Heather earns d dollars and owes $922 in expenses. How much in dollars does she have left after paying for expenses?
Click here to see answer by asuar010(338)

Question 1046281: Actually this is not a word problem but i badly need your help. This is about PHYSICS and the question is :
Derive the following equation in density or archimedes principle
1. Ps= Wa-Pw / Wa-Ww
where the Pw is the density of water equal to 1 g/cc
Ps is the density of irregularly shaped solid
Ww and Wa is the weight
2. Pl= Wa-Wl / gV
whete the g is the gravity equal to 9.8
Wl and Wa mass of liquid
V is the volume
IF this problem will be confusing , i will not hesitate to send the actual photo of this problem. I hope you can help me.
Click here to see answer by ikleyn(52775)

Question 1046445: Solve the system using the substitution method. (If there is no solution, enter NO SOLUTION.)
{3x + 2y = −1
{x= y + 13
Click here to see answer by Alan3354(69443)

Question 1046441: Solve the following system of linear equations by substitution. (If there is no solution, enter NO SOLUTION.)
{2a + 3b = 3
{a − 7b = 10
Click here to see answer by Alan3354(69443)

Question 1046449: Solve the following system of equations by graphing. (If there is no solution, enter NO SOLUTION. If there are infinitely many solutions, enter INFINITELY MANY.)
{y = −4x + 6
{4x + y = −8

Click here to see answer by MathLover1(20849)

Question 1046447: Solve the following system of equations using the elimination method. Note that the method of elimination may be referred to as the addition method. (If there is no solution, enter NO SOLUTION. If there are infinitely many solutions, enter INFINITELY MANY.)
{12x − 3y = 12
{20x − 5y = 20
Click here to see answer by Alan3354(69443)

Question 1046653: An automobile purchased for $34,000 is worth $2500 after 5 years. Assuming that the car's value depreciated steadily from year to year, what was it worth at the end of the third year?
Click here to see answer by ewatrrr(24785)

Question 1046442: Solve the system of equations by the substitution method. (If there is no solution, enter NO SOLUTION.)
{0.25x + 0.4y = −3
{0.5x − 0.6y = 8
Click here to see answer by Boreal(15235)

Question 1047547: five times the sum of a number and negative one is the same as six times the number
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Question 1048140: Of the 650 tickets sold to a movie, 510 were full-price tickets costing $7 each. If the gate receipts were $4,270, what did a student ticket cost?
Click here to see answer by JoelSchwartz(130)

Question 10465: Hertz Car Rental charges a daily rate of $39 plus .20 per mile for a certain car. Suppose that you rent that car for a day and your bill (before taxes) is $95. How many mile did you drive? I just need to know how to set this problem up.....
Click here to see answer by LILY3214(1)

Question 1048627: Determine the value of

Please include complete steps.
Click here to see answer by robertb(5830)

Question 1048939: When the sum of \, 343 \, and three times a positive number is subtracted from the square of the number, the result is \, 117. Find the number.
Click here to see answer by Alan3354(69443)

Question 1049958: one half of three fourths of a number is 20 more thn two fifths of the same number . what is the number
Click here to see answer by josmiceli(19441)

Question 1050541: A merchant mixed 10 lb of a cinnamon tea with 2 lb of spice tea. The 12-pound mixture cost $38. A second mixture included 16 lb of the cinnamon tea and 8 lb of the spice tea. The 24-pound mixture cost $80. Find the cost per pound of the cinnamon tea and of the spice tea.
Click here to see answer by Boreal(15235)

Question 1050539: A merchant mixed 8 lb of a cinnamon tea with 4 lb pf spice tea. The 12 pound mixture cost $14. A second mixture included 12 lb of the cinnamon tea and 12 lb of the spice tea. The 24 pound mixture cost $30. Find the coat per pound of the cinnamon tea and the spice tea.
Click here to see answer by josmiceli(19441)

Question 1050540: During one month, a homeowner used 200 units of electricity and 110 units of gas for a total cost of $74.50. The next month, 260 units of electricity and 250 units of gas were used for a total cost of $112.90. Find the cost per unit of gas.
Click here to see answer by advanced_Learner(501)

Question 1050596: -2(7-a) I Suppsose This Is easy But I thought it out and am asking, would the answer be -14-a?
Click here to see answer by stanbon(75887)

Question 1051071: 14x-2y=46
-7x+y=-23
Click here to see answer by ikleyn(52775)

Question 1051641: According to The Top 10 Everything, 2012, the Striped Marlin is the second fastest fish on the planet and can swim at 50 mph. The Blue Shark is the 10th fastest at 25 mph. Write a word problem based on the current facts.
PLEASE HELP ME :(
Click here to see answer by josmiceli(19441)

Question 1052326: A dairy keeps two kinds of milk on hand, skim milk that has 0.3% butterfat and whole milk that has 3.8% butter fat. How many gallons of each type of milk does a company need to produce 380 gallons of 1% milk for a grocery store?
Click here to see answer by addingup(3677)

Question 1052427: two angles are congruent.one angle is represented by the expression (1.15+0.8x)and the other angle is (2.3-1.5x).Write an equation and solve for each angle

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Question 1052679: The length of a rectangle is 7ft more than twice the width and the area of the rectangle is 99ft squared .find the dimensions of the rectangle
Click here to see answer by Alan3354(69443)

Question 1052751: Problem Page
Mary made
$391
for
17
hours of work.
At the same rate, how much would she make for
11
hours of work?

Click here to see answer by rfer(16322)

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