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Paha777 [63]
2 years ago
15

Please help me with this..

Mathematics
1 answer:
ollegr [7]2 years ago
8 0

Answer:

Step-by-step explanation:

1.one solution

2.infinitely

3.one solution

4.one solution

5.no solution

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A group of 625 students has a mean age of 15.8 years with a standard deviation of 0.6 years. The ages are normally distributed.
Tom [10]
16.2-15.8/0.6=0.6667. Use normalcdf() to find the percentage from -999 to 0.6777 which is 0.7476*625=467
7 0
3 years ago
Beatrix ate 21 raisins. This represents 30% of the box of raisins. How many raisins were originally in the box?
leonid [27]
21/0.3= 70
there were 70 raisins in the box
8 0
3 years ago
Please help will give brainliest
spayn [35]

Answer:

2112

Step-by-step explanation:

we find the area of the base first

which is 16*12/2 because it is a right triangle

16*12/2 = 96

then we multiply the base by the height

22*96 = 2112

as a note, remember, prism volume is all base * height

brainliest if this was helpful

8 0
3 years ago
Follow the steps and finish the solution. 7 (x minus 3) = 28 Distributive property: 7 x minus 21 = 28. Addition property of equa
Nookie1986 [14]

Answer:

7

Step-by-step explanation:

7(x - 3) = 28                 Given

7x - 21 = 28                  Distributive property

7x - 21 + 21 = 28 + 21   Addition property of equality

7x = 49                         Division Property of equality

7x/7=49/7                  

x = 7

6 0
3 years ago
Read 2 more answers
Abby Mia wants to know how much must be deposited in her local bank today so that she will receive yearly payments of $18,000 fo
muminat
We are not given tables, so will just use the amortization formula.
P=\frac{A*((1+i)^n-1)}{i*(1+i)^n}
where 
P=amount to be deposited today, to be found
A=amount withdrawn each year=18000
i=Annual interest=9%
n=number of years = 20

Substituting values,
P=\frac{A*((1+i)^n-1)}{i*(1+i)^n}
=\frac{18000*((1+0.09)^{20}-1)}{0.09*(1+0.09)^{20}}
=164313.82   to the nearest cent
6 0
3 years ago
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