Short answer 2 items for 25 cents.
To solve this, all you have to do is divide money by the number of items.
![\frac{Money}{Items}](https://tex.z-dn.net/?f=%20%5Cfrac%7BMoney%7D%7BItems%7D%20)
You put it into your calculator in exactly the same order.
Money
÷
Number of items
=
So in this particular question
1 dollars / 5 items = 0.20 dollars / item
0.85 dollars / 4 items = 0.2125 cents
0.25 dollars / 2 items = 0.125
1.10 dollars / 6 items = 0.18333
Which gives you the best value for your money?
.25 spent on 20 items. The order is determined by the larger the amount on the right of the equal sign, the more expensive the item.
Answer:
Identity is verified.
Step-by-step explanation:
We have to verify the identity ![cos(x+\frac{\pi }{2}) = (- sinx)](https://tex.z-dn.net/?f=cos%28x%2B%5Cfrac%7B%5Cpi%20%7D%7B2%7D%29%20%3D%20%28-%20sinx%29)
To prove any identity we always prove one side(either left hand side or right hand side) of the equation equal to the other side.
In this identity we take the left hand side first
![cos(x+\frac{\pi}{2})](https://tex.z-dn.net/?f=cos%28x%2B%5Cfrac%7B%5Cpi%7D%7B2%7D%29)
(as we know cos(a+b) = cosa×cosb-sina×sinb)
![= cosx\times0-sinx\times1](https://tex.z-dn.net/?f=%3D%20cosx%5Ctimes0-sinx%5Ctimes1)
![= 0-sinx](https://tex.z-dn.net/?f=%3D%200-sinx)
= - sinx ( Right hand side)
Hence identity is proved.
Answer:
7m² - 11m - 2
Step-by-step explanation:
(4m² - m + 2) - (-3m² + 10m + 4)
= (4m² - (-3m²)) + (-m - 10m) + (2 - 4)
= (4m² + 3m²) + (-11m) + (-2)
= 7m² - 11m - 2
- (+) meet (+) = (+)
- (+) meet (-) = (-)
- (-) meet (+) = (-)
- (-) meet (-) = (+)
Answer:
10
Step-by-step explanation:
- multiply the parenthesis by 3/5
- add the numbers
- multiply both sides by 5
- move constant to the right
- subtract the numbers
- divide both sides by 6