First, let's see what the answer is when we follow this equation using PEMDAS.
5 + 4 x 2 + 6 - 2 x 2 - 1
5 + 8 + 6 - 4 - 1
14
Now, let's trying grouping 5 + 4 together, and solving it again.
(5 + 4) x 2 + 6 - 2 x 2 - 1
9 x 2 + 6 - 2 x 2 - 1
18 + 6 - 4 - 1
24 - 5
19
So, the parentheses go around 5 + 4 to get your answer!
Answer:
AC=26
Step-by-step explanation:
AB and BC equal each other. So to find x, you would make the equation 6x-5=8x-11. Add 11 on both sides so it would be 6x+6=8x. Then subtract 6x from 8x. Then divide by 2 to get x=3. Since AC=AB+BC, plug in x into on of the equation and multiply by 2.
Multiply each of the numbers by a ten to a power that they both become whole numbers.
0.67 *
= 67
0.3 *
= 30
Divide as usual.
67 / 30 = 2
So, the answer is 2 1/3.
<h3>
Answer:</h3>
A. 3j+5p=7.60; 1j+2p=2.90
B. (j, p) = (0.70, 1.10)
C. $1.80
<h3>
Step-by-step explanation:</h3>
A. The bill is calculated by adding the products of quantity and price.
... 3j + 5p = 7.60 . . . . . . first bill
... 1j + 2p = 2.90 . . . . . . second bill
B. It is convenient to use the second equation to write an expression for j, then substitute that into the first equation.
... j = 2.90 -2p
... 3(2.90 -2p) +5p = 7.60 . . . . . substitute for j
... 8.70 -p = 7.60 . . . . . . . . . . . . eliminate parentheses, collect terms
... 1.10 = p . . . . . . . . . . . . . . . . . . add p-7.60
... j = 2.90 -2·1.10 . . . . put the value for p into the expression for j
... j = 0.70
C. j + p = 0.70 + 1.10 = 1.80
The cost of a juice and pancake special is $1.80.
