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Tju [1.3M]
2 years ago
14

The weights of 12-year old boys are normally distributed with a mean of 89 lbs. If 68% of 12 year old boys are between the weigh

ts of 82.7 lbs and 95.3 lbs, what is the standard deviation?
A
34
B
6.3
C
3.5
D
12.6
Mathematics
1 answer:
cricket20 [7]2 years ago
6 0
This is the answer B. This is because if you want to be treated the way you do treat people.
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If you draw all of the diagonals from a single vertex of a convex polygon with 8 sides, how many triangles are formed?
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The number of triangles is n-2
n= number of sides
8-2= 6 triangles
if applying this you won't have to draw any diagonals to
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3 years ago
Which situation about Sam's money could be described using the sum of -2.5 and -10?
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Answer

C. Sam owes his dad $7.50

Step-by-step explanation:

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Which of the following numbers is a composite number? A. 11 B. 17 C. 23 D. 27
dimulka [17.4K]

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ A composite number is 27. 27 is composite because there are more numbers than 1 and itself that can be multiplied to create 27. The two other numbers to make 27 are 3 x 9. All the other answer choices are prime numbers because no other numbers besides 1 and itself can be multiplied to make that number.

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ

5 0
2 years ago
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HELPPPPPP ASAP PLSPLSPLSPLSPLSPLSPLS
Art [367]

Answer:

n = -4

Step-by-step explanation:

n+14/2 = 5

x2           x2

n + 14  = 10

    -14     -14

        n = -4

7 0
2 years ago
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Solve. x^2 8x 25 = 0
kykrilka [37]
This equation is unsolvable.
x^2+8x+16=0
(x+4)^2+9=0
(x+4)^2= -9
anything to the power of whatever has to be greater than -1, it means it can be 0 or more but never a negative number. If it is a negative number, then it is false.
6 0
3 years ago
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