Hi!
Here's a little trick ;)
When dividing, you move the decimal point to the left
In this number, (1000) there are 3 zeros. Move the decimal point (which is currently behind 7) 3 places to the left
It becomes 0.067
So 67 divided by 1000 is 0.067
NOTE: This trick isn't going to work on all problems, only with numbers like this (1000, 100, etc) so please don't try this on all your questions.
Answer:
-8+9 = 1
Step-by-step explanation:
-2 to the power of 3 = -8
3 to the power of 2 = 9
Answer:
x = 1
y = 4
Step-by-step explanation:
5x + 2y = 13
x + 2y = 9
Add both equations.
6x + 4y = 22
Solve for x.
6x = 22 - 4y
x = 22/6 - 4/6y
Put x as 22/6 - 4/6y in the second equation and solve for y.
22/6 - 4/6y + 2y = 9
-4/6y + 2y = 9 - 22/6
4/3y = 16/3
y = 16/3 × 3/4
y = 48/12
y = 4
Put y as 4 in the first equation and solve for x.
5x + 2(4) = 13
5x + 8 = 13
5x = 13 - 8
5x = 5
x = 5/5
x = 1
There are 520'pages in the whole book because if you divide 390 by 3 you get 130 and if you multiply that by 4 you get 520, hope this helps! Please give brainiest answer and say thanks.
Step-by-step explanation:
