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Question 135033: Any assistance would be appreciated.
The expression for figuring a student's average test score is p/t, where p is the total points earned on all the tests, and t is the number of tests. Find a students average when 344 points are earned on 4 tests.
Click here to see answer by checkley77(12844) |
Question 135108: Ok my problem is a graph and im supposed to find the quadractic function and put it in standard form. The graph has two points on it which are vertex(0,3) and another point of (2,4). so today we went over in class how to solve problems like these so i put the information i had into f(x)= a(x-h)∧2 + k. I get all the way down to solving it but when i graph it. It doesnt graph out right which makes me think im doing it wrong. I know a is supposed to be negative but when i solved it, it came out positive so that was also wrong. I just dont know what to do.
Click here to see answer by solver91311(24713)  |
Question 135108: Ok my problem is a graph and im supposed to find the quadractic function and put it in standard form. The graph has two points on it which are vertex(0,3) and another point of (2,4). so today we went over in class how to solve problems like these so i put the information i had into f(x)= a(x-h)∧2 + k. I get all the way down to solving it but when i graph it. It doesnt graph out right which makes me think im doing it wrong. I know a is supposed to be negative but when i solved it, it came out positive so that was also wrong. I just dont know what to do.
Click here to see answer by stanbon(75887) |
Question 135209: Happy Friday to you math pros! Can I get a little help from you this morning?
The expression for figuring a student's average test score is p/t, where p is the total points earned on all the tests, and t is the number of tests. Find a student's average when 344 points are earned on 4 tests.
The average is____ points.
thanks
Click here to see answer by stanbon(75887) |
Question 135300: Solve:
a) logbase3 27+ logbase3 9-logbase3 81= logbase3 x ( I think the answer is 3)
b) logbase2 8 - logbase2 4=x ( I think the answer is 1)
c) logbase5 6- logbase5 x=logbase5 2 ( I think the answer is 3)
Click here to see answer by vleith(2983) |
Question 135306: Michael is growing two strains of yeast in the labratory. Strain A originally had 80 cells and is known to quadruple every 2 hours. Strain B initially had 640 cells and doubles every 5 hours. When will Michael observe the same number of cells in the two yeast cultures.
Click here to see answer by vleith(2983) |
Question 135309: please help with this math question from blitzer 4
(1) use the graph of y =x^2 -2x -8, what are the solutions to this equation?
(b) does this unction have a maximum or a minimum ?
(c) what is the equation of the line of symmetry for this graph?
(d) what are the coordinates of the vertex in (x,y) form?
(2) calculate the value of the discriminant of x^2 + 2x +1 =0
(b)how many x intercepts would the graph of y =x^2 +2x +1
(3) if a rock is throw upward with an initial velocity of 40 ft per second from the top of a 30 ft building, write the height as so, velocity as vo and t as time. equation being s=-16t^2+40+30
(a) how high is the rock after 2 seconds?
(b) how many second will the graph reach maximum height?
(c) what is the maximum height?
i know it's a lot ,but i really need your help. thank you so much
Click here to see answer by stanbon(75887) |
Question 135476: The vertices of the rhombus ABCD are A(-7,3),B(2,8),C(7,-1)and D(-2,-6).
a) Show that the opposite sides are parallel.
b) Show that the diagonals bisect each other.
I found the slopes to be : AB=5/9,BC=-9/5,CD=5/9,and AD=-9/5 so the opposite sides are parallel. For part (b) I found the midpoint for AC (-4,5) and BD(0,1). I think I may have this part wrong. Can someone please help me ???
Click here to see answer by ilana(307) |
Question 135538: the area of a rectangular field is 1200 m^2. two parallel sides are fenced with aluminum at $20/m. the remaining two sides are fenced with steel at $10/m. the total cost is $2200
a. what is the length of each side fenced with aluminum?
b. what is the length of each side fenced with steel?
Click here to see answer by josmiceli(19441)  |
Question 135865: In 1920, the record for a certain race was 45.5 sec. In 1950, it was 45.2 sec. Let
R(t)=the record in the race and t=the number of years since 1920.
a) Find a linear function that fits the data.
b) Use the function in (a) to predict the record in 2003 and in 2006.
c) Find the year when the record will be 44.6 sec.
Find a linear function that fits the data.
R(t)=?
Can you please help me with this?
Click here to see answer by solver91311(24713)  |
Question 135867: In 1995, the life expectancy of males in a certain country was 66.9 years. In 2002, it was 69.7 years. Let E represent the life expectancy in year t and let t represent the number of years since 1995.
Find a linear function E(t) that fits the data.
E(t)= ?t+?
HELP PLEASE!!!
Click here to see answer by stanbon(75887) |
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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, 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