# Critical Thinking/Math

139,170 results, page 76

### Math

On Joe Martin's graduation from college, Joe's uncle promised him a gift of $12000 in cash or $900 every quarter for the next 4 years after graduation. If money could be invested at 8% compounded quarterly, which offer is better for Joe? I have done this problem but I keep ...

### science(chem)

Breathing too much alcohol or too much HNO3 surely would not be very good but I doubt there would be a reaction that would produce toxic fumes other than the fumes from the HNO3 and/or the ethanol. On similar note, just yesterday an 18-wheeler spilled a little "hazardous waste...

### Math/Euler's Method

Consider a cooling cup of coffee whose initial temperature is 205°. The room temperature is held at 70°. Suppose k = 1/16. Let y be the temperature, and y' its time derivative. ----------------------------------- I have the differential equation: y' = (-1/16)(y-70) Initial ...

### Math

i have to do math riddles and their hard so can you help me out with this one please "six students lined up for a free throw competition. The fourth person won the event. Place the students in order and identify the winner. Paulin went before Ayla and rowen. Ayla shot right ...

### Math

20. The time t required to drive a certain distance varies inversely with the speed, r. If it takes 2 hours to drive the distance at 67 miles per hour, how long will it take to drive the same distance at 55 miles per hour? a. about 1.64 hours b. about 134.00 hours c. about 2....

### Math CONTINUATION OF QUESTION FROM bobpursley

Thank you for answering the question before bobpursley, I understand how you did the deriv of inside, outside, but how do I now do the second derivative since you have the extra -18x^2 in the numerator?? Thank you very much! (I suppose I have to brush up on my derivatives) ...

### math fair projects

what are some good math fair projects Here are some broad ideas, I don't know your grade level. Use the Google search engine to find out details. Golden Mean Fiboccani numbers Discovery of Calculus The history of PI Archimedes Square yeah those are pretty good. a nice broad ...

### writeacher

because in the previous message about the pemdas it is parenthesis,exponents,multiplication,division,addition,subtraction therefore how that little part that looks like this 12 divided by 2*2 it would be multiplication first then SORRY THEN DIVISION SO THAT MEANS OVERALL IT IS...

### math logic correction !!

What comes next in the sequence? st, nd, rd, th, __, __. Sorry about typos in previous question. th, th These are the two-letter endings to "ordinal" numbers, starting with the "first". See http://www.janbrett.com/piggybacks/ordinal.htm Thanks for your example, but I still don...

### math-steve

When Mr. Lucky starts betting, he has 3 dollars. On any bet, he wins with probability 1/3 and loses with probability 2/3. If he wins a bet, the total amount of money he has triples. If he loses a bet, he loses 2/3 of the total amount of money he has. Mr. Lucky’s objective is...

### psy - please proofread

Below is your Week 5 Day 7 CheckPoint: Persuasion & Conformity Scenario Assignment. You are to write a 200- to 300-word critique of the response. Include a summary of the decision stated in your assigned response, whether or not this response has made you see the scenario ...

### Chemistry Questions!!

I was sick for 2 days, and that's really not good in any chemistry class, let alone mine, which is an advanced one. I don't know what I was thinking when I tried to be smart, but I really need help. It's pretty basic, I think, so anyone..? Also, I really have tried these......

### math(check answers)

please check my math ANSWERS 1.which pair of ratio form a proportion? choose all that apply. A. 1/6, 4/20 B. 7/9, 28/36(I PICK THIS) C. 14/18, 21/27 D. 30/80, 8/18 2.which pair of ratios does not form a proportion? A. 3/5, 24/40 B. 30/10, 15/3(I PICK THIS) C. 9/14, 3/4 D. 7/12...

### Math w/reply

Hey there, just need help with these two. I need someone to help explain them to me/break them down. 1. gr 1/100=_____mg Answer: 0.6 2. 0.3mg= gr_____ Answer: 1/200 3. gr iii /ss= ______mg Answer: 210 Thank you in advance! *** REPLY: I did not get these answers. These are the ...

### Math

In a group of 40 students, all students study maths, 28 study biology and math, 20 students study geography and maths and x students study all three subjects. a. Draw a venn diagram to represent the information above, showing in terms of x, the number of students in each ...

### Math (Transition)

I need some help in math here is the problem if anyone can help me please reply When the fuel tanks of an airline are 3/8 full, they contain at least 6300 gallons. How much fuel can the airliner hold when the tanks are full? Since 3/8 equals 6300, you need to see how many ...

### math (transition)

i need some help in math here is the problem if anyone can help me please reply When the fuel tanks of an airline are 3/8 full, they contain at least 6300 gallons. How much fuel can the airliner hold when the tanks are full? Since 3/8 equals 6300, you need to see how many ...

### English

I have completed this test and I missed 4 questions. My answers are submitted in blue, can you tell me which questions are wrong. 1.Having studied small engine repair in night school, fixing the lawn mower was easy. dangling modifier 2. When I asked for a submarine, the ...

### math

A golf ball is to be hit 300 yards straight to make a hole in one. Having only played miniature golf, your first swing makes the ball skew 50 yards N 30 W. Trying to get back on track, the second shot goes 80 yards N 35 E. Now you are very upset with this game and you swing ...

### Math

1. There are 18 boys and 12 girls in a math class.what is the ratio of girls to total students? A.18:30 B.(12:30) C.30:12 D.30:18 2.which of the following ratios are equivalent to 6:9? Choose all that apply. A.3:2 B.18/27 C.(30:45) D.(24/32) 3.what is the unit price for one CD...

### math-old

A bag got mix up 6 pairs of shoes – 2 red, 2 blue, and 2 purple. Picking randomly, how many shoes must I pick before for sure that there is one matching pair in red or blue? Ms Sue answered 4. Request for explanation please. math - Ms. Sue, Tuesday, January 29, 2013 at 10:...

### English

Purchasing a Snow Blower (title) Snow blowers (also called snow throwers) can make the sometimes difficult, often-unpleasant task of clearing snow from sidewalks and driveways much easier. Before making a purchase, however, it’s best to learn a few snow blower basics. Most ...

### math

A researchr assistant made 160mg of a radioactive, and found that there was only 20mg left after 45hours. a) What is the half-life of this substance? b) Write a function to represent the amount of substance left after x hours c) If the researcher kew he needed 100mg of the ...

### Math

Hello i am doing assignment in my math 20-2 class. The question is: data collected of cars passing on the road revealed that the average speed was 90 km/h with a standard deviation of 5 km/h and the data which is normally distributed a policeman is assigned to set photo radar ...

### Math!Please Help.!

Hi.-It's Margie and I have a Math Lab to do but I don't get this.If you can, please help.: Use the Pythagorean Theorem to find the diagonal of the new room. length=22 width=25 area=350 Is the area supposed to be 550 instead of 350? Area of a rectangle is length times width, ...

### math

i have math homework and it says i have to find 1 pair of rectangle that are simular and find the scale factor but i cant find the scale factorthe k rectangle is 4 cubes base by 3cubes height and n rectangle is 12 cubes base and 1 cube height but i cant find the scal factor ...

### math

The Zalinsky family can drive the 220 miles to their cabin in 4 hours at 55 miles per hour. Son Jeff claims that they could save half an hour if they drove 65 miles per hour, the speed limit. How long will it take the family if they drive 65 miles per hour? My solution is 3 ...

### Quick math help

My math exam is coming up Friday and I need help!! Can you please guide me throgh the processes on the three questions? Thank you so much greatly apreciate it!! Write the standard form of the equation of each line given the slipe and y-intercept. 1. Slope= -1/5, y-intercept=0 ...

### math-followup

A bag got mix up 6 pairs of shoes – 2 red, 2 blue, and 2 purple. Picking randomly in the dark, how many shoes must I pick before for sure that there is one matching pair in red or blue? Ms Sue answered 4. Request for explanation please. math - Ms. Sue, Tuesday, January 29, ...

### math

d-14=13

### math

c-68=78

### Math

[52 + 10] 62 62

### math

what is u, w, and z? what are you asking?

### math

x= 6/4

### math

Thanks. I will.

### math

5+5=10 yes

### math

what is 80% of 5? 4 4

### math

2+2= 4

### math

7k^2-6k+3=3 7k^2-6k+3=3 7k^2 - 6k = 0 7k^2 = 6k 7k = 6 k = 6/7

### Help in math

12.

### MATH

5+2 5 + 2 = 7

### math

6*(5+4) 6 x 9 = ?

### math

1 1 /3 X 1.80 1 1/3 = 4/3 4/3 x 1.8 = (4 x 1.8)/3 = 7.2/3 = 2.4

### math

2n-3 for n=9

### Math

2_ 5_ = 17

### MATH

.9X=15-.6X

### MATH

z6-z2

### math

z^6-z^2

### math

-12-(-17)/ -23-(-23)

### math

(-12) -(-17) / (-23)) - (-23)

### math

How do you do this? w=[k(B+b)]/3

### Math

4x-y =5

### math

3a - 8 (2a + 5b) - (a - 7b)

### math

a(x+c)= b(x-c)

### MATH

d^2+8 8-d ------ - ------ d^3-d d^3-d

### MATH

2m + 1 --- --- 6m-3 3-6m

### math

(7x^5)(8x) (-2.4m^3)(3.5m^-3)

### Math

5 3/4 - (-8 1/2) = ?

### math

-2x + 4(2x - 9)

### math

1.if 7y=2x=5,then x= ?

### math

If 7y-2x-5,then x=?

### Math

What is a²+6a-72+0 ?

### math

If 7y-2x-5,then x=?

### Math

4/5 of 10=

### Math

/ X = 21

### math

11/12-[1/3 1/4]=

### math

If h= 3 and k =4, then hk+4/2 -2=

### math

If n=2 and x=1/2, then n(4-x)=

### math

-5x>15

### math

y=7x-6 When y=0 x=?

### math

(x+1)(x-1)=5(x-1)

### math

8x=4y=12

### math

if y=6 3x-y=10 what is x

### math

a4.a6

### math

13.7b-6.5=-2.3b+8.3

### math

8x-[2x+3{-2(2x+3)-4x}-10]

### math

2m+12=3m-31 3(5j+2) = 2(3j-6)

### Math

9k+6<39 -

### math

x+4=2x+3

### math

(2n-3)(n-2)

### math

3(x-2)-2x=x-6

### MATH

2t/3 - 11 = 4 (16 - t ) - 1t/3

### math

2(2.5b-9)+6b=-7

### math

23/4=f-1/4

### math

5-6x=12

### math

7x+2=10

### math

k-9(2+k)

### MATH

3x-8>10

### math

e^0.5

### math

x+12=6 so does x = -6

### math

8/9 x 1 1/5 x 10

### Math

4b+5d-c/a

### math

x+2y=3 2x+3y=7

### math

7p-6+4p=-39

### Math

10=1x - 3 4m-4 =4m

### Math

2x-y=4 and 2x-y=3

### math

1. 5m+6=-4

### Math

17 11/(12 ) ÷6 1/10

### Math

.34