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dlinn [17]
3 years ago
13

What is 8.1% of 252?​

Mathematics
1 answer:
VMariaS [17]3 years ago
7 0

Answer:

20.412

Step by step explanation:

8.1% of 252 = 0.081 × 252 = 20.412

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The total sales at Office Products this year are $713,340, which is 35% more than last year’s sales. What is the amount of last
antoniya [11.8K]

The amount of last year sales is $ 528400

<em><u>Solution:</u></em>

Let "x" be the amount of last year sales

Given that,

The total sales at Office Products this year are $713,340, which is 35% more than last year’s sales

Therefore,

This year sales = 35 % more than last year sales

This year sales = 35 % of last year sales + last year sales

713340 = 35 % of x + x

713340 = 35 \% \times x + x\\\\713340 = \frac{35}{100} \times x + x\\\\713340 = 0.35x + x\\\\713340 = 1.35x\\\\\text{Divide both sides of equation by 1.35 }\\\\x = 528400

Thus amount of last year sales is $ 528400

8 0
3 years ago
If a bacteria population starts with 100 bacteria and doubles every three hours, then the number of bacteria after t hours is n
natali 33 [55]

Answer:

f^{-1}=3ln_2(\frac{t}{100})

f^-1 represents the number of hours the bacteria developed

Step-by-step explanation:

f(t) = 100 \cdot  2^\frac{t}{3}

To find inverse of a function , replace f(t) with y

y= 100 \cdot  2^\frac{t}{3}

replace t with y and y with x

x= 100 \cdot  2^\frac{y}{3}

solve for y

divide both sides by 100

\frac{x}{100} =2^\frac{y}{3}

take ln on both sides

ln \frac{x}{100} =\frac{y}{3}ln 2

divide both sides by ln

ln_2(\frac{x}{100}) =\frac{y}{3}

multiply by 3 on both sides

y=3ln_2(\frac{x}{100})

Replace x with t  and y with f^-1

f^{-1}=3ln_2(\frac{t}{100})

f^-1 represents the number of hours the bacteria developed

7 0
3 years ago
Please help, need to find x and y :))
blondinia [14]

Answer:

x=14

y=140

Step-by-step explanation:

Using (9x+14) + (3x-2) = 180, we can solve this equation.

First add like values giving you 12x+12=180. Then subtract 12 from both sides giving you 12x=168.

Then divide both sides by 12 giving you x=14.

Finally, just simply set 9x+14 equal to y and substitute x for 14. This gives you 140=y

Hope this helped

6 0
3 years ago
Read 2 more answers
50 POINTS!!!! NEED HELP!!! 2 QUESTIONS!!!! please answer correctly. i begging u
frosja888 [35]
Dawson's annual premium will be $2,462.40. This can be found by going across from "Male 40-44" over to "20-year coverage" which is $13.68. Since $13.68 is per $1000 of coverage, you would multiply it by 180 to get $2,462.40.

Rachel's checks I believe would have a deduction of $63.14.
4 0
4 years ago
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Y=-4x.-3<br> y= -2x + 1<br> What is y and x?
Jet001 [13]
You would equal the equations together then solve for a variable.

-4x - 3 = -2x + 1

-4x + 2x = 1 + 3

-2x = 4
—— —-
-2 -2

x = -2

then take that x value and substitute it into any one of the equations.

Equation #1
y = -4(-2) -3
= 8 - 3
= 5

Equation #2
y = -2(-2) + 1
= 4 + 1
= 5
4 0
3 years ago
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