It dependes on how hevvy the rock is.

1+1= 1 cookie plus 1 cookie, you are adding a whole number by a whole number so you get 2 whole numbers.

4.25 / 16 =0.265625 cost per ounce.

8C5  ×  0.77^5  ×  0.23^3

Find the "Lowest Common Denominator" and then add the numerators. You should have given an example and would have shown you what to do. Look it up in your textbook. It is all explained there.

Id enter it as 

(Sinx)^2+(tanx)^2

Its a calculator.

What does x equal?

If u want a value for the expression then you need to enter an x value

w - 4 <= -9 add 4 to both sides

w <= -5

a+5/4=27/10 what is a?

a =27/10 - 5/4

a=54/20 - 25/20

a=29/20=1 9/20

Mrs. Miller teaches 3 times as many students 1st hour as she does 3rd hour. her second hour class has twice as many as her 3rd hour class. if she has a total of 72 people in her 3 morning classes, how many does she have in each class?

Let the number of students in her 3rd class =S

Her 2nd class student numbers =2S

Her 1st class student numbers =3S

S + 2S + 3S =72

6S = 72

S =72/6

S=12 Number of students in her 3rd class

2 x 12 =24 Number of students in her 2nd class

3 x 12 =36 Number of students in her 1st class.

-y = -x + 12 multiply both sides by -1

y =x - 12

Solve for t:
t^3-3 t^2-15 t+125 = 0

The left hand side factors into a product with two terms:
(t+5) (t^2-8 t+25) = 0

Split into two equations:
t+5 = 0 or t^2-8 t+25 = 0

Subtract 5 from both sides:
t = -5 or t^2-8 t+25 = 0

Subtract 25 from both sides:
t = -5 or t^2-8 t = -25

Add 16 to both sides:
t = -5 or t^2-8 t+16 = -9

Write the left hand side as a square:
t = -5 or (t-4)^2 = -9

Take the square root of both sides:
t = -5 or t-4 = 3 i or t-4 = -3 i

Add 4 to both sides:
t = -5 or t = 4+3 i or t-4 = -3 i

Add 4 to both sides:
Answer: |t = -5       or      t = 4+3 i        or         t = 4-3 i

pretty sure it is window

1+1 is greater than 3.14 or 78 if my maths are correct

help! 

Pretty simple. Seven more means you stick a (+7) on the end. Two times mean you multiply it by two. "The difference of yesterday's temperature high and 7" means (whatever yesterday's highest temp was) - 7. So the end expression is

2 x (temp - 7) +7

which equals

(2temp - 14) +7

which equals

2temp - 7

Or at least, that's what it ought to be.

Question 1: Do you know what division is?

Okay, fractions are like this. Imagine you have four cookies. You want to give out these cookies evenly between you and two of your friends. But wait! There's four cookies, and three friends- it doesn't work out! So, you take the last cookie and split it into three pieces (or at least I'd hope that's what you'd do). Each friend gets one cookie, plus a little extra. Simple!

So say you want to write that in math terms. Well, you can't say that each person gets "one and a bit" of a cookie- we require rigor! So, instead, you say that each friend gets 1 cookie plus one piece of a cookie that's been divided into three pieces- 1 + 1/3. Another way to write this is 4/3 of a cookie; each 1 cookie contains 3 thirds, so you just add all the pieces up and you get 4 thirds of a cookie per friend.

This is iteratable- it works with any two numbers (for example, a million cookies and seventy-three friends).

Hope this helps!

 Thanks to everybody who helped me with these series of problems I've posted. I really like this community and how helpful they  can be, without this website I wouldn't have been able to complete this test with the 100% I'm sure I'm going to get on it. I really appreciate it.

Width =w

Length =w - 3

Area =w x [w - 3]

Area =w^2 - 3w

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Simplify the following:
36 m n^2-36 m^2 n-(4 m n^2-20 m^2 n+55)

-(55-20 m^2 n+4 m n^2) = -55+20 m^2 n-4 m n^2:
36 m n^2-36 m^2 n+-55+20 m^2 n-4 m n^2

Grouping like terms, 36 m n^2-36 m^2 n-55+20 m^2 n-4 m n^2 = (36 m n^2-4 m n^2)+(20 m^2 n-36 m^2 n)-55:
(36 m n^2-4 m n^2)+(20 m^2 n-36 m^2 n)-55

36 (m n^2)-4 (m n^2) = 32 (m n^2):
32 m n^2+(20 m^2 n-36 m^2 n)-55

20 (m^2 n)-36 (m^2 n) = -16 (m^2 n):
Answer: |32mn^2 - 16m^2n - 55

You're not funny. Please spend your time doing something more productive with your time. If this is a legitamite question (which I doubt) just google it. Thank you and goodbye. 

     -Hatman...

 Thank you.

Solve for x:
(2 x)/3+4 = (3 x)/(5)-2

Put each term in (2 x)/3+4 over the common denominator 3: (2 x)/3+4 = (2 x)/3+12/3:
(2 x)/3+12/3 = (3 x)/(5)-2

(2 x)/3+12/3 = (2 x+12)/3:
(2 x+12)/3 = (3 x)/(5)-2

Put each term in (3 x)/(5)-2 over the common denominator 5: (3 x)/(5)-2 = (3 x)/5-(10)/5:
(2 x+12)/3 = (3 x)/5-(10)/5

(3 x)/5-(10)/5 = (3 x-10)/5:
(2 x+12)/3 = (3 x-10)/5

Multiply both sides by 15:
(15 (2 x+12))/3 = (15 (3 x-10))/5

15/3 = (3×5)/3 = 5:
5 (2 x+12) = (15 (3 x-10))/5

15/5 = (5×3)/5 = 3:
5 (2 x+12) = 3 (3 x-10)

Expand out terms of the left hand side:
10 x+60 = 3 (3 x-10)

Expand out terms of the right hand side:
10 x+60 = 9 x-30

Subtract 9 x from both sides:
(10 x-9 x)+60 = (9 x-9 x)-30

10 x-9 x = x:
x+60 = (9 x-9 x)-30

9 x-9 x = 0:
x+60 = -30

Subtract 60 from both sides:
x+(60-60) = -30-60

60-60 = 0:
x = -30-60

-30-60 = -90:
Answer: |x = -90

HELP!!!!!!!!!!!!!!!!!!