Answer:
23
Step-by-step explanation:
2(10) + 3
20 +3
23
HOPE IT HELPS YOU!
$4 more each time. You can tell that Raphael is growing at a rate of 6 every week (40 to 46 to 52 to 58) and Jessica is Growing at $10 each week because it is what is in front of the x. Raphael's formula would look like y=6x+40 because they started at 40 and grew by 6 every week.
9514 1404 393
Answer:
- (5 +4 +3)×2 -1 = 23
- 5 +(4×3×2) -1 = 28
- 5×(4 +3 +2 -1) = 40
Step-by-step explanation:
The above expressions give the values you requested. I was able to form all integers 1-40 except 39.
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<em>Additional comment</em>
I used a computer program to evaluate different sequences of operations. Attached is one result for each integer 1-40 except 39. The notation here is postfix, but is not difficult to translate to infix with parentheses. Starting with the left-most operation (op), the pattern (a, b, op) → (a op b) is used. For example, the listing for 38 is 543+*21++, so this becomes 5*(4+3)+(2+1) = 38.
The line is 7 units long. Add the two equations together and set equal to 7:
7x-1 + 2x-1 = 7
Combine like terms:
9x-2= 7
Add 2 to both sides:
9x= 9
Divide both sides by 9:
X= 1
X + (x+2) = 154
combine like terms
2x + 2 = 154
subtract 2
2x = 154
divide by 2
x = 76
so the two numbers are 76 and 78