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kondor19780726 [428]
3 years ago
9

Answer the circled ones and ill give brainiest!!

Mathematics
1 answer:
sergejj [24]3 years ago
3 0
8B and 10 not sure probably centre??
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Emily got a new job that guarantees her at 6% raise every year.If she started out making $25,000,How long will it be before she
Nadya [2.5K]

Hello from MrBillDoesMath!

Answer:  about 12 years ( approx 11.9 years)

Discussion:

Salary at ...

end of year 1:  25000 + (.06) * 25000

end of year 2:  (salary at end of year 1) +

                                 .06(salary at end of year 1) =

                       (25000 + (.06)*25000) +

                 .06 (25000 + (.06)*25000)  

           The bold faced terms are the same. Factor out the boldfaced term to

           get

                     (25000 + .06*25000) ( 1 + .06)

            Factor 25000 out to get

                    25000 * (1 + .06) * (1+ .06)

            The last two terms multiple out to give (1 + .06)^2

            so....

end of nth year salary is

           25000 * ( 1 + .06) ^n

To double her salary we need to find "n" such that

         50000 = 25000 ( 1.06) ^ n

Dividing both sides by 25000 gives

        2 = 1.06 ^n

Taking the logarithm of both sides gives:

log2 = n * log (1.06)   or

n = log2 / log(1/06)

This is approximately     0.3010 /  0.0253   or about 11.9 years.


Thank you,

MrB

3 0
3 years ago
A car is traveling at 65 ​mi/hour. What is the​ car's speed in feet per​ second?
IceJOKER [234]

Answer:

use photo math plz mark me brainlisist

Step-by-step explanation:

5 0
2 years ago
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19. If the scale is 1:100 on a plan, and a fence is 7,500 mm,
marshall27 [118]

Answer:

It will measure 75 millimetres on the plan.

Step-by-step explanation:

Given:

Scale on the plan = 1:100

Length of the fence =  7,500 mm

To find:

how many millimetres will it measure on the plan

Solution:

As the ratio on the plan is 1: 100, the for 7500 the ratio will

x : 7500

Now by cross multiplication we get

7500 \times 1 = x \times 100

7500 = 100x

x =\frac{ 7500}{100}

x = 75

4 0
3 years ago
Show how to find the product of 16.2 times 4 using addition
irina1246 [14]
6.2+6.2+6.2+6.2=24.8
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3 years ago
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What is the slope of the line that passes
solniwko [45]

Answer:

-1

Step-by-step explanation:

y-y=m(x-x)

-3-4=m(7-0)

-7=m(7)

m=-7/7

m=-1

6 0
3 years ago
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