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Nitella [24]
3 years ago
14

1. Find the average of the prime numbers in the following list:5, 11, 13, 1, 16, 19, 21​

Mathematics
1 answer:
Tomtit [17]3 years ago
8 0

Answer:

12

Step-by-step explanation:

there are 4 prime numbers

5, 11, 13, 19

4/7 were prime

add 5, 11, 13 and 19 together and divide by 4

5+11+13+19

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

4

add

48

----

4

divide top by bottom

=12

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3 years ago
A fenced in rectangular region with the dimensions 4 yards by 8 yards is suddenly expanded by the same distance in each dimensio
Korolek [52]

Answer:

The distance added to each dimension is 2 yards.

Step-by-step explanation:

The initial dimensions of the rectangular fence is 8 yards by 4 yards.

The initial area of the rectangular fence = area of a rectangle

area of a rectangle = length x width

So that,

The initial area of the fence = 8 x 4

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The initial area of the fence is 32 square yards.

But, with the new dimensions, area = 60 square yards.

(4 + x) x (8 + x) = 60

x^{2} + 12x + 28 = 60

x^{2} + 12x - 32 = 0

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x = -14 or x =2

Thus, x = 2

The distance added to each dimension is 2 yards.

4 0
3 years ago
A) Find the GCF<br> B) Factor out the GCF<br> C) What are the solutions?
Shalnov [3]

Answer:

A) GCF = b^{2}

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C) b = 0, b = -10/3

Step-by-step explanation:

4 0
3 years ago
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Volgvan

distance from the point to O, so it can never be negative so answer is

b.oppsite

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