Step-by-step explanation:
You would multiply 4 and 3, and 2 and 9 separately, then add them, then subtract 40. Remember PEMDAS.
(4*3) + (2*9) - 40
12 + 18 - 40
-10
Hope that helps
Answer:
the problem is like that or is showing u how are the equations ?
The answer is 3(-3-n) :) hope this helps
<span>Write an expression for the total cost of the tools.
</span>
total cost = <span>$11.79 (4) + </span>$6.65 (7)
<span>Then find the total cost.
</span>total cost = $11.79 (4) + $6.65 (7)
total cost = $47.16 + $46.55 = $93.71
One way in which to approach this problem would be to treat it as an equation of ratios and to cross multiply:
<span>[(4x + 15) / 5x)] = 1/2 could be written as:
4x + 15 1
----------- = ---
5x 2
Then 8x + 30 = 5x
3x = -30, and so x = -10 (answer). Be certain to check this answer through substitution!
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