Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

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Question 1163928: At a baseball game, the batter hits the baseball straight up at an initial velocity of +42m/s.
A) at what time will the ball reach its highest point
b) what will be the maximum height the ball reaches
BTW the answer is about 4.3 secs for part a and 90 m for part b.. could you pls show me the steps i need its for my hw. THANKS!!

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Question 1163928: At a baseball game, the batter hits the baseball straight up at an initial velocity of +42m/s.
A) at what time will the ball reach its highest point
b) what will be the maximum height the ball reaches
BTW the answer is about 4.3 secs for part a and 90 m for part b.. could you pls show me the steps i need its for my hw. THANKS!!

Click here to see answer by ikleyn(52831) About Me 

Question 1163965: Find the decay rate of Arsenic-74 when the half- life is 17.5 days. Round to six decimal places.
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Question 1163965: Find the decay rate of Arsenic-74 when the half- life is 17.5 days. Round to six decimal places.
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Question 1163980: lim as x approaches 9 (9-x/sqrtx-3) answer to this question is -6 but i got 6 could u explain me the apprach
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Question 1164088: Katie and Josh go mountain climbing. At one point Katie is on a ledge 6 meters directly above Josh. Katie is thirsty so Josh tosses a water bottle straight up to Katie with an initial velocity of +14m/s. The bottle rises and passes Katie on the way up, then it falls back down to her and she catches it as it falls.
A) at what time does the bottle pass Katie going up, and what time does she catch it

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Question 1164236: Evaluate f''(2) for the function f(x)=x^3-4x^2+10x-7
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Question 1164086: a boy jumps from a diving board at the pool. The board is 1.5 meters above the surface of the water. He bounces up in the air and then fall dowsn into the water. Exactly 2.0 seocnds pass from the time the boys' feet leave the baord to the time his feet hit the water
A) find the initial velocity
B) find the final velocity upon reaching the water

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Question 1164345: Which of the following list of numbers is closed under division? A. Rational Numbers B. Whole Numbers C. Perfect Squares D. Irrational Numbers
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Question 1164087: A lizard jumps stright up from the ground. The lizard lands on a leaf that was directly above where it jumped from. Although the lizard jumped upward with an initial velocity of +8m/s, when he landed on the leaf his final velocity was just -2m/s
A) how high above the ground is the leaf
B) how long was the grasshopper in flight

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Question 1164400: -3(x-5)>2x-5
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Question 1164598: Katie swam east acorss a river at 8m/s and the river was flowing south at 2m/s. what was the resultant velocity
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Question 1164952: State the number of terms in the expression. (Enter an exact number.
2 - 3 x + (6 x - 5)/7 - 4x^2

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Question 1165136: two less than four times a number is equal to 22 more than seven times the number. what is the number
If 2 is subtracted from a number and this difference is tripled, the result is 12 more than the number
two minor league baseball players got a total of 324 hits. Washington has 14 more hits than Sanchez. Find the number of hits for each player
In a recent year, person A and person B had two concert tours, and together they generated $194.4 million in ticket sales. If person B took in $228 million less than person A, how many millions of dollars did each tour generate?
The tour of person A generated $ million in ticket sales
The value of an uncirculated “Mint State-65” 1950 Jefferson nickel minted in Denver 5/4 the value a 1945 ni Mel minted in Philadelphia in similar condition. Together her the total value of the two coins in $63. What is the value of each coin? What is the value of the 1945 nickel?
A boy purchased (brought) a party-length sandwich 63 in. long. He wants to cut into three pieces so that the middle piece is 6 in. Longer than the shortest piece and the shortest piece is 9 in. Shorter than the longest piece. How many long should the three pieces be? The shortest piece has a length of __ in.
The numbers on two consecutively numbered time lockers have a sum of 129. What are the locker numbers? The locker numbers are?
The sum of the page numbers on the faxing pages of a book is 77. What are the page numbers? The number on the left page is __ and the hunger on the right page is __
Find two consecutive even integers such that the smaller added to theee times the larger gives a sum of 30. The numbers are __
Find two consecutive odd interferes such that 107 more than the lesser is six times the greater. The lesser consecutive odd integer is __, and the greater consecutive odd integer is __
The measure of the angle’s supplement is 60 more than four times that of its complement. Find the measure of the angle destroyed. The measure of the angle is __
Find the measure of an angle such that the difference between the measures of its supplement and six times its complement is 50. The measure of the angle is __

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Question 1165327: Difference of 5 from a number

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Question 1165440: Please check to see if the 2 problems below are correct.
Perform the indicated operation:
Problem 1
(3a^2b^2 +3ab -3 +6ab +8) =
-3 (2^2b^2 ab(3 +6) -3 + 8) =
-3 a^2b^2 + 9ab +5) =
Answer = -3A^2B^2 -27ab -15
Problem 2:
2x^n (3x^n + 2x +5) =
2x^n (3x^n) + 2xn (2x) + 2xn (5) =
Answer = 6x^2n^2 + 4x^2n +10xn
Thank your for verifying these 2 for us.



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Question 1166141: how do you compare the function y=5(1/2)^x to the exponential parent function
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Question 1166271: Rectangle ABCD has a length represented by the expression 2x-3 and a width represented by the expression 4x-5. Rectangle PQRS has a length represented by the expression x-1 and a width represented by the expression 3x+2. Which of the following expressions can be used to represent the difference in the perimeters of Rectangle ABCD and Rectangle PQRS
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Question 1166741: rewrite the expression as a sum
-8x^2 + 3xy - 9x -3

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Question 1166826: Khanna is four times as old as Kuhn. 12 year ago,
Khanna was 7 times as old as Kuhn. How old will
Kuhn be in 15 years?

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Question 1166826: Khanna is four times as old as Kuhn. 12 year ago,
Khanna was 7 times as old as Kuhn. How old will
Kuhn be in 15 years?

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Question 1166826: Khanna is four times as old as Kuhn. 12 year ago,
Khanna was 7 times as old as Kuhn. How old will
Kuhn be in 15 years?

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Question 1166900: The amount of nitrogen dioxide NO2 present in the air in the city of Springeld on
a certain day in July. a) Draw the graph and use it to estimate the time of day when
the NO2 level was at its maximum. 2 p.m. b) The equation for the graph is A(t) =
−2t
2 + 32t + 42, where t is the number of hours after 6:00 a.m. (considering 6.00 am as
0, 7.00 am as 1 and so on) Use this function to determine the maximum level of NO2 on
that day

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Question 1167062: Jina works as a tutor fot $15 an hour and as a waitress for $8 an hour. this month, she worked 96 hours at her two jobs. Let T be the number of hours jena worked as a tutor this month. Write an expression for the combined total dollar amount she earned this month...
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Question 1167062: Jina works as a tutor fot $15 an hour and as a waitress for $8 an hour. this month, she worked 96 hours at her two jobs. Let T be the number of hours jena worked as a tutor this month. Write an expression for the combined total dollar amount she earned this month...
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Question 1167297: 2y + 3 = 12 Solve for y
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Question 1167772: Seven more than the cube of a number
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Question 1167773: Seven more than the cube of a number
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Question 1168551: formula for simplifying 6v=2v+28 for value of v.
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Question 1168722: I multiplied one whole number by 18. I multiplied a second whole number by 21. I then added the two products . Of the following , which could have been the resulting sum ? .Thanks for any help
Options are —-
A. 1996
B 1997
C 1998
D. 1999

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Question 1168722: I multiplied one whole number by 18. I multiplied a second whole number by 21. I then added the two products . Of the following , which could have been the resulting sum ? .Thanks for any help
Options are —-
A. 1996
B 1997
C 1998
D. 1999

Click here to see answer by ikleyn(52831) About Me 

Question 1168740: Given f(x) =5x and g(x)=4x^2+2,find the following expressions.
(a) (fog)(4)
(b) (gof)(2)
(c) (fof)(1)
(d) (gog)(0)

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Question 1169350: 2/9 + 3/9 +1/9 =
Click here to see answer by ikleyn(52831) About Me 

Question 1169460: Twice the square of a number and a second number

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Question 1169666: Part of a work done in (x + 1) hours if the work can be done (2x-5) hours.

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Question 1170347: the remainder is 2 When 4𝑥^2 − 3𝑥 − 8 is divided by 𝑥 − 𝑎, Find a
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Question 1170349: When 4x raised to 2 -3𝑥−8 is divided by 𝑥-𝑎, the remainder is 2. Find the value of a

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Question 1171074: -b+9x
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Question 1171074: -b+9x
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Question 1172603: Evaluate 1/2(1.5+3/4÷1/4)
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Question 1172603: Evaluate 1/2(1.5+3/4÷1/4)
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Question 1172682: The six departments of a company, consisting of 22, 32, 18, 16, 10, and 12 employees have an equal monthly salary of $7,200,$7,600,$6,900,$8,200,$7,800, and $7,200, respectively. What is the mean monthly salary of all the employees of the company?
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Question 1173089: Simplify
1) a+5a+2a
2)(-6a)(4b)
3)5.7xy-1.2xy
4)-10(2a-6b)
5)9x+3y-(5x+y)

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Question 1173372: Would you please review and see if I have correctly simplified the below expressions?
Problem 1
x^3a * x^b = x^3a+b
Problem 2
(-3ax^2)^0 = 0
Problem 3
4ab(6a^2b^3) divided by -16a^3b^3 = -3/2b or 1 and 1/2b
Problem 4
56^0(x^3) = 0 0r x^3 (Not sure of which is correct)
Problem 5
(-4xy^2)^2 divided by 16x^4y^5 = 1/x^2y
Thank you

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Question 1173730: Please verify if I have correctly simplified the below expressions:
Problem 1 = x^3a * x^b my answer is x^3a+b
Problem 2 = 4ab(6a^2b^3) divide by -16a^3b^3 = 24a^3b^4 divided by -16a^3b^3 =
24b divided by 16 = -3b/2
Problem 3 = x^-3 = 1/x^3
Problem 4 = (-2x)^3 = 1/8x^3
Problem 5 = 2^-3 = 1/2^3 = 1/8
Thank you

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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840