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m_a_m_a [10]
4 years ago
5

a normal distribution with a mean of 85 and a standard deviation of 12. What is the proportion between 80 and 90? u =85 s =12. P

(80
Mathematics
1 answer:
Neko [114]4 years ago
4 0
I think the answer is 44
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Solve the compound inequality
Juli2301 [7.4K]

Answer:

<u>Given inequality:</u>

  • -5r + 7 ≥ -7 - 6r ≥ 4r + 3

<u>Solve in parts:</u>

  • -5r + 7 ≥ -7 - 6r ⇒ 6r - 5r ≥ -7 - 7 ⇒ r ≥ -14
  • -7 - 6r ≥ 4r + 3 ⇒ 4r + 6r ≤ -7 - 3 ⇒ 10r ≤ -10 ⇒ r ≤ -1

<u>Combine into one:</u>

  • -14 ≤ r ≤ -1

or

  • r = [-14, -1]
4 0
3 years ago
Can someone please help me this question and explain/show your work to get that answer??
pishuonlain [190]
If the number increases each year, then the 15% starts with a bigger number each year.

The first increase raises 300 million to (1.15 times 300 million) = 345 million.

The next increase raises 345 million to (1.15 times 345 million) = 396.75 million.

and so on and so on. 

This is just like compound interest in a bank.  Each time the bank
pays you interest on your savings, it pays interest on a bigger amount.

In this problem, the number of cars increases

   ... at the end of 2000 / beginning of 2001  
   ... at the end of 2001 / beginning of 2002  
   ... at the end of 2002 / beginning of 2003
   ... at the end of 2003 / beginning of 2004  .

That's four times.  Each increase raises it 15% higher than it was before.
So you need to find

        (1.15) · (1.15) · (1.15) · (1.15) of 300 million.

The way to write that is

         (300 million) · (1.15)⁴   =      524 million 701 thousand 875 cars.

Rounded to the nearest whole million, that's  525 million. 
 
8 0
4 years ago
I need help with number 8
zysi [14]

Answer:

C. The circle is circumscribed about ΔABC

Explanation:

The circumscribed circle of a polygon is a circle that passes through all the vertices of the polygon.

5 0
3 years ago
Read 2 more answers
Jack bought a motorbike. The original price was $1,300, but he got a discount of 20%. What was the discounted price of the bike?
Vesnalui [34]

Answer:

I believe it's $1,040.

Step-by-step explanation:

So, the original price is $1,300. If we subtract $1,300 by 20% the result should be $1,040.

Therefore, the discounted of the price would be $1,040.

4 0
3 years ago
What is 9+10???????????
olga_2 [115]

Answer:

19 lol

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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