answer: x = 1/2
<u>explanation</u>
subtract 3x from both sides
4x+8=10
subtract 8 from both sides
4x=2
divide both sides by 4
x=2/4
simplify
x=1/2 OR x=.5
hope i helped!
Answer:
3. B. 128
4. B. 50.24
Step-by-step explanation:
3. The Books
The numbers of the problem make it quite easy.
We can easily figure out how many books will be stacked in each dimension of the trunk.
Length:
Books: 10 inches
Trunk: 40 iinches.
How may books can you fit lengthwise in the trunk? 40 / 10 = 4
We then to the same for the width:
Books: 6 inches
Trunk: 24 inches
How many books can you stack wide-wise in the trunk? 26/4 = 4
And then the height:
Books: 2.5 inches
Trunk: 20 inches
How many books stacked in height? 20 / 2.5 = 8
So, we can saw the trunk is 4 books long, by 4 books wide by 8 books thick... so, the number of books you can fit in that trunk is:
B = 4 * 4 * 8 = 128
4. Tomato juice
First, we have to find the volume of that big can...
Since it's a cylinder, its volume is calculated by:
V = π * r² * h and we have everything we need:
V = 3.14 * 4² * 12 = 192 * 3.14 = 602.88 cu in
We know a cup of tomato juice takes 12 cu inches...
So, how many cups of juice fit in that can?
C = 602.88 cu in / 12 cu in/cup = 50.24 cups
(2,4) it takes 2 from -1 to 1 and 4 from -1 to 3
He spends 150+244+300+50=744 on the listen items so he he has 496 left to spend.
so 40% of his net income.
Answer:
old 36 cents
new 45 cents
So isolate the variable on the left side by dividing both sides by 4/5:
4/5*5/4n = 5/4*9
on the left 4/5 and 5/4 cancel each other out and you end up with:
n = 5/4*9 = (5*9)/4 = 45/4 = 11 1/4 or 11.25
The price of a packet of salt goes up to 9 cents.The old price is four-fifths of the new price.Find the old and new prices. [Hint:let the old price be n cents.So the new price is n+9 cents\
