To find your answer you must substitute y for 0.8
4x + (8)(0.8) = 40
Now solve for x
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SOLVING...
<span>4x + (8)(0.8) = 40
</span><span>4x + 6.4 </span>= <span>40
</span>
Subtract 6.4 from each side
<span><span><span>4x</span>+ 6.4 </span>− 6.4 </span>= <span>40 − <span>6.4
</span></span>4x = 33.6
Divide each side by 4
4x ÷ 4 = 33.6 ÷ 4
x = 8.4
Answer:
D
Step-by-step explanation:
We observe that the values of m are 10 less than the corresponding values of n, that is
n = 10 → m = 10 - 10 = 0
n = 12 → m = 12 - 10 = 2
n = 15 → m = 15 - 10 = 5
n = 19 → m = 19 - 10 = 9
In general
m = n - 10 → D
Evaluate the expression below
(8.1 + 7.9)x – (25 ÷ 5)