Questions on Algebra: Real numbers, Irrational numbers, etc answered by real tutors!

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Question 1142562: three hours of videotape contains two movies with lengths that are in the ration 5:3 what is the difference in the lengths of the movie in minutes
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Question 1142595: The supplement of an angle of 43°40' contains ____ degrees.
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Question 1142596: In the diagram, angle SEP is a right angle. Angle SET = 30°27'40". Find angle TEP.
https://lh3.googleusercontent.com/-oLh3VkLn-2U/XRG_QHZ1fmI/AAAAAAAAC-g/zHDsqhtPlvUC2uhUaeM8zIYdNHclcVU_ACK8BGAs/s512/2019-06-24.jpg

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Question 1142869: Consider the following set of real numbers:
open curly brackets short dash square root of 7 comma space short dash square root of 15 over 4 end root comma space short dash 0.7 with bar on top comma space 1.5 comma space square root of 36 over 9 end root comma space square root of 25 close curly brackets
Which of the following contains all of the irrational numbers in the set?

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Question 1143296: The height of a cannonball shot upward from a height of 14 feet above the ground with an initial velocity of 60 ​feet/second is given by the equation
h equals negative 16 t squared plus 60 t plus 14
h=−16t2+60t+14.
After how many seconds will the cannonball be 30 feet above the​ ground?

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Question 1143295: The annual​ profit, P, from selling x subscriptions to a newspaper is given by the equation
Upper P equals 57 plus 40 x minus 0.01 x squared
P=57+40x−0.01x2.
​(a) What is the annual profit from selling 40 subscriptions of this​ newspaper?
​(b) Approximately how many subscriptions would have to be sold if the publisher wants annual profit of ​$19,000​?

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Question 1143391: The height of a cannonball shot upward from a height of 14 feet above the ground with an initial velocity of 60 ​feet/second is given by the equation
h equals negative 16 t squared plus 60 t plus 14
h=−16t2+60t+14.
After how many seconds will the cannonball be 30 feet above the​ ground?

Click here to see answer by Alan3354(69443) About Me 
Question 1143391: The height of a cannonball shot upward from a height of 14 feet above the ground with an initial velocity of 60 ​feet/second is given by the equation
h equals negative 16 t squared plus 60 t plus 14
h=−16t2+60t+14.
After how many seconds will the cannonball be 30 feet above the​ ground?

Click here to see answer by josmiceli(19441) About Me 

Question 1143395: The height of a cannonball shot upward from a height of 14 feet above the ground with an initial velocity of 60 ​feet/second is given by the equation
h equals negative 16 t squared plus 60 t plus 14
h=−16t2+60t+14.
After how many seconds will the cannonball be 30 feet above the​ ground?

Click here to see answer by greenestamps(13200) About Me 

Question 1143414: The height of a cannonball shot upward from a height of 14 feet above the ground with an initial velocity of 60 ​feet/second is given by the equation
h equals negative 16 t squared plus 60 t plus 14
h=−16t2+60t+14.
After how many seconds will the cannonball be 30 feet above the​ ground?

Click here to see answer by josgarithmetic(39617) About Me 

Question 1143416: Compute the value of the discriminant and give the number of real solutions of the quadratic equation.
-3x^2+9x-1 = 0

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Question 1143439:
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Question 1143545: what set of numbers does -1/2 belong to
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Question 1143545: what set of numbers does -1/2 belong to
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Question 1143542: (1) The equality 8.3a + (4b +-3.2c)= *.3a + 4b +-3.2c can be justified by associativity. True or False.
2. Which is not equal to the others? A:xy3-(3x3 = 2 B:x(y3 +3x)-2 C.xy3-2+3y2 D: xy3 +3y 2-2
3. Which of the following is an application of the inverse property? A: 4 +a=a+4 B"1/x (yz=(y/x)z C:(ax2 =b) 1/ax2-16 D: C3 +0=C3
4:How many real numbers are there between o and 1?
5:The expression 4c +3ac is the same as c(4+3a) of associativity.

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Question 1143595: The sum of two whole number is 45. The difference is 10. What are possible pairs?

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Question 1143595: The sum of two whole number is 45. The difference is 10. What are possible pairs?

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Question 1144128: Find all real values of x for which
f(x) = 0.

f(x) = x3 − x

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Question 1144150: To graduate I need at least a B in Statistics. I did not do very well on her first three tests. However, I did last in the last four. Below are my scores:

57 60 84 90 92 95

1) compute the mean
2) determine whether my grade will be a B (70 to 79 average) or C (60 to 69 average)

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Question 1144320: Consider the interval [0, ∞). For each numerical value below, is it in the interval or not? Just answer Yes or No for all parts (a to f). No work is required
a:0/7 b:-2^3 c:|-4| d: 6.2 *10^-2 e: (-2)^-2 f: - square root -4

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Question 1144920: A football team loses 3 yards in 3 Consecutive plays. What is the total yardage gained?
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Question 1145129: What _17 belong to
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Question 1145136: Find the domain and solve the inequalities:
5x/(x−3) ≥ x(x−3)

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Question 1145380: Simplify the term 1+3i/2-i
Write the result in the form a+bi, where a and b are real numbers

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Question 1145381: For f (x) = x^3 + x^2 - 4, use the Intermediate Value Theorem to determine which interval must contain a zero of f.
A. Between 0 and 1
B. Between 1 and 2
C. Between 2 and 3
D. Between 3 and 4

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Question 1145434: please need help I figured I would solve with quadtric equation but nor sure if tis right.
Consider the equation 3x2 + 2 = 4x. Find the complex solutions (real and non-real) of the equation, and simplify as much as possible

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Question 1145434: please need help I figured I would solve with quadtric equation but nor sure if tis right.
Consider the equation 3x2 + 2 = 4x. Find the complex solutions (real and non-real) of the equation, and simplify as much as possible

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Question 1147181: is 1.529783 rational or irrational

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Question 1147808: all real numbers that are between -5 and 7

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Question 1147808: all real numbers that are between -5 and 7

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Question 1148151: I have to solve the rational inequality and write the answer in interval notation. Could you please provide step by step guidance. I can solve, just want to make sure I have the correct steps.
x^2 - x - 12
____________ > 0
x^2 +x -6

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Question 1148151: I have to solve the rational inequality and write the answer in interval notation. Could you please provide step by step guidance. I can solve, just want to make sure I have the correct steps.
x^2 - x - 12
____________ > 0
x^2 +x -6

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Question 1148465: Kendall owns 39 CDs, and he buys a new one every week. Raymond owns 15 CDs but he buys 3 new ones every week. How many weeks will it be before Raymond owns as many CDs as Raymond?
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Question 1150585: 20+3[7+4]+5+2[7+9]

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Question 1150894: We call a number a descending number if each digit is strictly smaller than the digit that comes before it. For example, 863 is a descending number. How many 3-digit descending numbers are there?
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Question 1151174: The solution to n + 4n - 3n = 16 is
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Question 1153235: What can be reduced in radical expressions like this ?
Purplemath.com states this can't be reduced any further. But why can't it ?
3/(2 + sq root 2)
Their final answer is:
6 - 3(sq root 2)/2
The 6 can reduce to 3 and the 2 to a 1.
Giving final answer of:
3 - 3(sq root 2)

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Question 1154191: A rectangular garden is 5 ft longer than it is wide. Its area is 3900
ft
2
. What are its dimensions?
W=

L=

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Question 1155514: By the method of induction, show that
10^n+3.4^(n+1)+5 is divisible by 9

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Question 1155960: open curly brackets short dash square root of 5 comma space short dash 1.5 comma space short dash 1 third comma space 0 comma space square root of 2 comma space square root of 4 comma space pi comma space 4. top enclose 3 close curly brackets
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Question 1156734: is the square root of -49 a real number?

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Question 1156987: ) A truck filled with chocolate chips (41,000 lbs.) skidded 100 yards and flipped over spilling all the
chips onto the highway (Syracuse.com June 27, 2012). Twelve ounces (oz.) of chocolate chips
can make 5 dozen cookies (16 oz. = 1 lb.). How many cookies could be made from all of the chips

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Question 1157070: 14.5 of what number is 81.2
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Question 1157081: OneFit, a new fitness center, starts with 100 members and grows by 20 members per month while the established fitness center ByGym has 400 members when OneFit opened and loses 10 members per month. In how many months will one fit have the same number of members as ByGym?
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Question 1157081: OneFit, a new fitness center, starts with 100 members and grows by 20 members per month while the established fitness center ByGym has 400 members when OneFit opened and loses 10 members per month. In how many months will one fit have the same number of members as ByGym?
Click here to see answer by MathTherapy(10552) About Me