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Elis [28]
3 years ago
9

The price of gold has a mean of $1243 per ounce. The price per ounce has a normal distribution, with a standard deviation of $21

. What range of values represents the middle 95% for the price per ounce of gold?
(1222, 1264)

(1201, 1285)

(1222, 1306)

(1201, 1265)

(1180, 1306)
Mathematics
1 answer:
igomit [66]3 years ago
7 0
Sorry idk I need points :(
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What is 3 2/8 times 4 1/5
Serjik [45]

Answer:

273/20 or 13.65

Step-by-step explanation:

3 2/8=26/8

4 1/5=21/5

----------------

26/8*21/5=273/20

5 0
3 years ago
The scale of a room in a blueprint is 6in : 13ft. A wall in the same blueprint is 9 inches. How long is the actual wall?
Ganezh [65]

Answer:

Step-by-step explanation:

6 in to 13 ft = 9 in to x ft

6 / 13 = 9 / x.....cross multiply because this is a proportion

(6)(x) = (13)(9)

6x = 117

x = 117/6

x = 19.5 (or 19 1/2) ft <====

5 0
2 years ago
The sum of three consective even integers if the largest number is y
coldgirl [10]

Step-by-step explanation:

If y is largest number, you want y, and the two next smaller even integers smaller than y - i.e. y, y-2, and y-4

The sum of these is y + (y-2) + (y-4).

This simplifies to 3y - 6 or 3(y - 2)

Since we don’t know what y is, this is as far as we can solve the problem.

6 0
2 years ago
Can someone please help me with this :(
mrs_skeptik [129]

Answer:

first find the surface area of one of the square and one of the triangle.

then multiple it by the number of square and triangle they have

finally add the total surface area of the triangle with the total surface area of the square.

Step-by-step explanation:

  1. for one square

area= base * width

= 10*10

=100

total area of square= number of square * area of one square

t=6*100

t=600

  • for one triangle

area = 1/2 base * height

= 1/2 *10*8.66

=43.3

total area of triangle=number of triangle* area of one triangle

t2=8*43.3

=346.4

total surface area= total surface area of the square+ total surface area of the triangle

=600+346.4

=946.4 in^2

5 0
3 years ago
Help me solve this problem please
Mashutka [201]
Divide $4.20 by 2 to get how much $ a pound then multiply by 5 MAKE SURE TO DO IT TWICE in order to have the right answer
3 0
3 years ago
Read 2 more answers
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