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Alex787 [66]
3 years ago
14

Boston had a high temperature this year of 99º. They had a low temperature of -10°.

Mathematics
1 answer:
stealth61 [152]3 years ago
3 0

Answer:

109

Step-by-step explanation:

99+10=109

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47 students per room, 45 weren’t in a room
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If ΔABC ΔDEC, what is m∠D? A. 40° B. 150° C. 60° D. 80°
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I think that the best answer here would be that A = 40 degrees. 
6 0
3 years ago
mike's condo has a market value of 310000. the property in mikes area is assessed at 40% of the market value. the tax rate is 14
Svetradugi [14.3K]
If you would like to know Mike's tax, you can calculate this using the following steps:

a market value ... 310000
the property ... 40% of the market value = 40% * 310000 = 40/100 * 310000 = 124000

the tax rate ... 145.10 per 1000 of assessed valuation
145.10 ... 1000 of assessed valuation
x ... 124000 of assessed valuation
____________________________
145.10 * 124000 = 1000 * x     /1000
x = 145.10 * 124000 / 1000
x = 17992.4 (Mike's tax)

The correct result would be: Mike's tax is 17992.4.
6 0
3 years ago
Scientists have discovered a vaccine for a debilitating disease. This year there were 570,000 reported new cases of the disease
Ket [755]

Answer: There are approximately 853827 new cases in 6 years.

Step-by-step explanation:

Since we have given that

Initial population = 570000

Rate at which population decreases is given by

\frac{2}{3}

Now,

First year =570000

Second year is given by

570000\times (\frac{1}{3})

Third year is given by

570000(\frac{1}{3})^2

so, there is common ratio ,

it becomes geometric progression, as there is exponential decline.

so,

570000,570000\times \frac{1}{3},570000\times( \frac{1}{3})^2,......,570000\times (\frac{1}{3})^6

a=570000

common ratio is given by

r=\frac{a_2}{a_1}=\frac{1}{3}

number of terms = 6

Sum of terms will be given by

S_n=\frac{a(1-r^n)}{(1-r)}

We'll put this value in this formula,

S_6=\frac{570000(1-(\frac{1}{3})^6}{(1-\frac{1}{3})}\\\\=853827.16

So, there are approximately 853827 new cases in 6 years.

6 0
3 years ago
--8W + 5 = -43<br> what’s this?
nataly862011 [7]

Answer:

it is the equation which you have to solve.

3 0
3 years ago
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