D 10” riser , 7-1/2 treas
Answer:
It’s in between a and b
Step-by-step explanation:
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Answer:
rate per month = .01 agreed = r
Luckily they only ask for the first month so it is 0.01 * 20 .
Later months get more complicated and it is like paying off a mortgage with the term unknown but the rate and payment known.
Payment = principal value [ r / {1-(1+r)^-n } ]
100 = 2000 [ .01 / {1 - (1.01)^-n } ]
5 = 1/ {1 - (1.01)^-n }
.2 = 1 - (1.01)^-n
.8 = 1.01^-n
log .8 = -n log 1.01
n = 22.4 months :)
so over the almost two years pay 2240 total :)
<em>* Hopefully this helps:) Mark me the brainliest:)!!!</em>
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Answer:
24 boys
Step-by-step explanation:
You can solve this using simultaneous equations.
You know the number of boys plus the number of girls is 52, so b + g = 52.
You also know the number of boys is 6/7 the number of girls, so b = 6/7g
Then you can substitute this into the first equation - 6/7g + g = 52, so 13/7g = 52.
Solving that equation, 52 / 13/7 = 28, so there are 28 girls.
You then work out the number of boys by doing 52- the number of girls, so 52- 28 = 24 boys
Hope this helps, let me know if you have any questions :)