Question

who can be so nice and help me before 12:00

Answer 1

Suppose that the amount of algae in a pond doubles every 6 hours. If the pond initially contains 50 pounds of algae, how much algae will be in the pond after 18 hours? (1 point)
400
10,800
300
600
2. What is the order of the numbers from least to greatest?

A = 1.5 x 103 B = 1.4 x 10–1 C = 2 x 103 D = 1.4 x 10–2 (1 point)
D < B < A < C
C < A < B < D
D < B < C < A
B < D < A< C
3. Danielle has decided to raise rabbits but has been warned that the number of rabbits she will have will grow very quickly. Danielle started out with 15 rabbits and the function y = 15 • 1.8x models the number of rabbits she will have after x months. Which graph represents this function? (1 point)
graph
graph
graph
graph
4. Multiply. Give your answer in standard form.

(3n2 + 2n + 4)(2n – 1) (1 point)
6n3 + n2 + 6n – 4
6n3 + 7n2 + 6n – 4
6n3 – n2 + 10n – 4
6n3 + n2 + 10n – 4
5. Multiply. (3x + 5)(3x – 5) (1 point)
9x2 – 30x – 25
9x2 + 30x + 25
9x2 – 25
9x2 + 25
6. The area of a rectangular painting is given by the trinomial x2 + 2x – 15. What are the possible dimensions of the painting? Use factoring. (1 point)
(x + 5) and (x – 3)
(x + 5) and (x + 3)
(x – 5) and (x – 3)
(x – 5)and (x + 3)
7. Graph the function and identify the domain and range.

y = –6x2 (1 point)
graph

domain: (–∞,∞)

range: y ≤ 0
graph

domain: (–∞,∞)

range: y ≥ 0
graph

domain: (–∞,∞)

range: y ≥ 0
graph

domain: (–∞,∞)

range: y ≥ 0
8. A catapult launches a boulder with an upward velocity of 148 ft/s. The height of the boulder, h, in feet after t seconds is given by the function h = –16t2 + 148t + 30. How long does it take the boulder to reach its maximum height? What is the boulder’s maximum height? Round to the nearest hundredth, if necessary. (1 point)
Reaches a maximum height of 30 feet in 9.25 seconds.
Reaches a maximum height of 640.5 feet in 4.63 seconds.
Reaches a maximum height of 1,056.75 feet in 4.63 seconds.
Reaches a maximum height of 372.25 feet in 4.63 seconds.
9. Solve the equation using the Zero-Product Property.

–9n(5n – 5) = 0 (1 point)
–1/9, 1
0, 1
–1/9, –1
0, –1
10. Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.

x2 + 10 = –7x (1 point)
x = 2, 5
x = –2, 5
x = 2, –5
x = –2, –5
11. A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation y = –0.04x2+ 8.3x + 4.3, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. How far horizontally from its starting point will the rocket land? (1 point)
208.02 m
416.03 m
0.52 m
208.19 m
12. How many real-number solutions does the equation have?

y = 3x2 – 5x – 5 (1 point)
one solution
two solutions
no solutions
infinitely many solutions
13. Since opening night, attendance at Play A has increased steadily, while attendance at Play B first rose and then fell. Equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. On what day(s) was the attendance the same at both plays? What was the attendance?

Play A: y = 7x + 84

Play B: y = –x2 + 40x – 6 (1 point)
The attendance was the same on day 30. The attendance was 294 at both plays that day.
The attendance was the same on day 3. The attendance was 105 at both plays that day.
The attendance was never the same at both plays.
The attendance was the same on days 3 and 30. The attendance at both plays on those days was 105 and 294 respectively.
14. What are the solutions of the system?

y = x2 + 3x – 4
y = 2x + 2 (1 point)
(–3, 6) and (2, –4)
(–3, –4) and (2, 6)
(–3, –4) and (–2, –2)
no solution
15. Simplify the radical expression.

square root 405 (1 point)
5 square root 9
9 square root 5
negative 9 square root 5
45
16. Simplify the expression.

5 square root 3 plus 3 (1 point)
6 square root 3
6 square root 6
5 square root 3
5 square root 6
17. What is the value of cos(72°) to the nearest ten-thousandth? (1 point)
0.4755
0.1545
0.9511
0.3090
18. What is the simpler form of the following expression?

(–18x3 + 17x + 6) ÷ (3x + 2) (1 point)
–6x2 + 4x + 3
6x2 + 4x – 3
–6x2 + 4x – 3
6x2 – 4x + 3
19. Solve the equation.

equation (1 point)
x = negative 101 over 12
x = 101 over 12
x = negative 67 over 12
x = 67 over 12
20. The time t required to drive a certain distance varies inversely with the speed, r. If it takes 4 hours to drive the distance at 40 miles per hour, how long will it take to drive the same distance at 55 miles per hour? (1 point)
about 2.91 hours
about 160.00 hours
about 22.00 hours
about 5.50 hours
21. Graph the function and identify the vertical asymptote.

y =( 1 over 1 – 4) – 2 (1 point)
graph
x = –4
graph
y = –4
graph
x = 4
graph
y = 4
22. Find the sum or difference.

equation (1 point)
13 negative 1 and 1 equation
13 and 1 and 1 equation
13 and negative 1 and 1 equation
13 and negative 1 and 1 over -6 equation
23. The number of hours a group of contestants spent preparing for a quiz show are listed below. What is a frequency table that represents the data?

60 25 86 56 45 48 90 75 30 67 90 36 80 15 32 65 61 (1 point)
hours/ frequency table
hours/ frequency table
hours/ frequency table
hours/ frequency table
24. Is the histogram uniform, symmetric, or skewed?

histogram (1 point)
uniform
symmetric
skewed
25. What are the minimum, first quartile, median, third quartile, and maximum of the data set?

20, 70, 13, 15, 23, 17, 40, 51 (1 point)
minimum = 13

first quartile = 16

median = 21.5

third quartile = 45.5

maximum = 70
minimum = 13

first quartile = 15

median = 21.5

third quartile = 51

maximum = 70
minimum = 13

first quartile = 15

median = 20

third quartile = 45.5

maximum = 70
minimum = 13

first quartile = 16

median = 23

third quartile = 51

maximum = 70
26. Identify the sampling method.

You want to determine the number of text messages students at your school send in a month. You go to the cafeteria and randomly ask students as they come out of the lunch line. (1 point)
random
systematic
stratified
none of these
27. Simplify –(3ab2)–3 (1 point)
1 over 9a3b6
–1 over 27a3b6
–1 over 3a3b5
27a3b6
28. What is the simplified form of the expression?

5d6 • d–12 (1 point)
5d–72
6d–72
5d–6
6d–6
29. What is the degree of the monomial?

6x5 (1 point)
6
30
5
11
30. What is the factored form of the expression?

p2 – 49 (1 point)
(p + 7)(p + 7)
(p – 7)(p + 7)
(p – 7)(p – 7)
(p – 30)(p – 19)
31. Solve the equation by completing the square. Round to the nearest hundredth if necessary.

x2 + 2x = 8 (1 point)
x = 2, 4
x = –2, 4
x = 2, –4
x = –2, –4
32. What is the length of the hypotenuse of the right triangle shown below?

hypotenuse (1 point)
119
79
101
10.9
33. What is the side length of b in the triangle shown below?

hypotenuse (1 point)
60
50
72
62.95
34. Simplify the radical expression by rationalizing the denominator.

2 over square root 42 (1 point)
square root 84 over 42
square root 42 over 21
21 square root 42
square root 2
35. Solve the equation. Identify any extraneous solutions.

square root w equals negative 4 (1 point)
16 is a solution to the original equation.
16 is a solution to the original equation. −16 is an extraneous solution.
no solution
−16 is a solution to the original equation. 16 is an extraneous solution.
36. Simplify the rational expression. State any excluded values.

7x minus 14 over x minus 2 (1 point)
x
7; where x ≠ 7
7; where x ≠ 2
0
37. Divide.

(25x2 – 40x + 18) ÷ (5x – 3) (1 point)
5x – 5 - 3 over 5x – 3
5x – 8 – 18 over 5x – 3
5x – 5 + 3 over 5x – 3
5x – 14
38. Suppose that y varies inversely with x and that y = 2 when x = 8. What is an equation for the inverse variation? (1 point)
y equals 8 over 2x
y equals 2 over 8x
y equals x over 16
y equals 16 over x
39. You roll a standard number cube. Find P(number greater than 2). (1 point)
one over three
2 over 3
one-half
5 over 6
40. The box-and-whisker plot shows the average temperatures in Tucson, Arizona in December.

box and whisker plot

Which statement about the temperatures in Tucson must be true? (1 point)
About half of the days in December had average temperatures above 60 degrees.
About half of the days in December had average temperatures between 52 and 60 degrees.
The coldest day in December was 52 degrees.
The hottest day in December was 65 degrees.
41. In a word game you choose a tile from a bag, replace it, and then choose another. If there are 14 vowels and 32 consonants, what is the probability you will choose a consonant and then a vowel? (1 point)
224 over 1035
112 over 529
529 over 112
9 over 23

Answer 2

i know the first 5*

Answer 3

Omg, this is doing your work for you

Answer 4

I will see what I can do.

Answer 5

sorry i don't ask for help but grades go in at 12;00 and this is so hard i can't even do it my self

Answer 6

why are you doing it so late?

Answer 7

lol

Answer 8

i had other one's to do , and this was the hardest one so i did it last

Answer 9

hmmmm

Answer 10

O_O checking or helping?

Answer 11

helping ..

Answer 12

I need help!!!!!!!!

Answer 13

@Nikkeyiboo i need help too ;)

Answer 14

@tHe_FiZiCx99 you don't know ? it's ok if you don't

Answer 15

That is way, way too much lol ._. they seem kinda easy, im doing my own homework atm xD

Answer 16

oh okay :)

Answer 17

sorry :P D:

Answer 18

This is insane. You're asking us to do 41 problems for you. Usually I wouldn't have a problem with one or two, but 41?

Answer 19

You counted?! Lol xDDD

Answer 20

Then be nice and do one at a time. She never told you to

Answer 21

Just looked at the bottom number :p

Answer 22

haha

Answer 23

I might do a few. Yours sound easier. >.<

Answer 24

i just took like 3 other semester exams :) .. i'm tired but thanks

Answer 25

I need help please

Answer 26

@halorazer one question it's off topic but did you see the grammys last night

Answer 27

Not really a TV kind of guy.
1 is an exponential question, y=ab^x
Where a is the initial amount, b is the multiplier, and x is the time
I set it up as

Answer 28

y=50*2^x/6
Because 50 pounds of algae were present to begin with and it doubles after six hours, and it is going by x hours.
18 hours/6 hours it would take to double would be x=3
y=50*2^3
So the answer would be 400.

Answer 29

i did number one through 6 already

Answer 30

well that was a waste of time :p

Answer 31

well I'll go check 7

Answer 32

sorry i should of told you

Answer 33

It looks like 7 is already done

Answer 34

I love how everyone is scrambling to finish their homework before the semester ends and I already took all my exams and stuff.

Answer 35

did you , you took geometry ??

Answer 36

I took geometry two years ago. I'm in precalculus at the moment.

Answer 37

oh , i have to take my geometry one , and i about to click anything .. i have a 70 in that class

Answer 38

this one (algebra one ) is for my sister

Answer 39

never mind i don't need help my sister just clicked any answer and she passed with a 17/42 don't know how but yeah she did

Answer 40

8. A catapult launches a boulder with an upward velocity of 148 ft/s. The height of the boulder, h, in feet after t seconds is given by the function h = –16t2 + 148t + 30. How long does it take the boulder to reach its maximum height? What is the boulder’s maximum height? Round to the nearest hundredth, if necessary. (1 point)
Reaches a maximum height of 30 feet in 9.25 seconds.
Reaches a maximum height of 640.5 feet in 4.63 seconds.
Reaches a maximum height of 1,056.75 feet in 4.63 seconds.
Reaches a maximum height of 372.25 feet in 4.63 seconds.

For this one we would be doing the vertex equation on it, -b/2a
So -148/2(-16) is equal to -148/-32
which is equal to 4.625 seconds is when it is at it's maximum point. then you just plug it in.
-16(4.625)^2+148(4.625)+30 which gives us 372.25 feet in 4.63 seconds.

Answer 41

That's a terrible grade though. That's literally a 40% o.o

Answer 42

haha , it's not me soo , but somehow her grade went up ..

Answer 43

That means her grade was less than a 40% o.o that's bad

Answer 44

you think you can help me with 2 geometry question real fast

Answer 45

I'll see what I can do, sure.

Answer 46

any three distinct points are _______ collinear

A. always
B.sometimes
C.never
d.inconclusive

Answer 47

@halorazer

Answer 48

Any two points are collinear as long as they're on the same plane. As for three points, they sometimes are.

Answer 49

thanks

Answer 50

i finish my test i got a 45/51

Answer 51

my geometry one

Answer 52

That is definitely better than your sister's. :p

Answer 53

Hey. Do this on your own. This site is not for cheating on school work.

Answer 54

@anonymouseee um he only gave me one answer i did the rest on my own so please if it bothers you so much , then why tell me , like i don't know that .. i always see people say the same thing you saying but do i care not really , get suspended ? i already did i mean i don't usually ask for help unless im extra late with doing my work or failing but i didn't fail a grade yet .. i actually never had a F but any way stop being so concern about me , i understand it's in the CoC but please stop , it's 'my last time i'm going to ask for help , !

Answer 55

Naw idc care about their policy or whatever, you doing this will not help as you advance in to other grades.

Answer 56

did you get these?

Answer 57

do you have these?

Answer 58

@queen_BEE can you send me the answers to the test ..im presumign you've already taken it

Answer 59

Did you ever get these?

Answer 60

wow this is way to much :O

Answer 61

is anyone good with range because i really need help

Answer 62

What where the answers

Answer 63

i know feather i agree

Answer 64

PLEASE POST THE ANSWERS

Answer 65

no direct answers

Answer 66

00

Answer 67

HOLLY CRAP!!!