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lilisncz
27.12.2019 •
Mathematics
Me with the following questions. in advance!
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Ответ:
Step-by-step explanation:
For #6, first use the rule to "undo" the division. That rule is subtraction:
Now "undo" the multiplication with addition:
The last rule is to pull down the exponent to the front:
For #7, begin by setting each expression equal to x, what we are solving for.
Writing this as an exponent:
Take the natural log of both sides:
Following the same rule as above, we can pull the x down front:
x ln(4)= ln(18)
To solve for x, just divide both sides by ln(4) to get that
x = 2.08
Do the same thing for 7b.
x = -6.21
Ответ:
3/4 of 40 : 30
30x3.75= $112.05
She still needs : $37 or $37.05