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irga5000 [103]
3 years ago
10

Indicate whether each number is a prime or a composite number. a. 5 b. 11 c. 18 d. 47 e. 44 f. 65

Mathematics
1 answer:
Paladinen [302]3 years ago
8 0

Answer:

a. Prime

b. Prime

c. Composite

d. Prime

e. Composite

f. Composite

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I need an explanation as to why the other three are wrong aswell
storchak [24]

Answer:

B

Step-by-step explanation:

B is the only one that has only 2 sides of the same length and one that doesn't match the other 2.

A doesn't have any of the lengths being the same

C. is a right triangle, although there can be isosceles right triangles they still need to have only 2 lengths that are the same and in this one, all the values are different

D. This is an equilateral triangle, this has more than 2 lengths that are the same

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Children under 10 years and older people over 65 years receive a discount on movie tickets. Let x represent the age
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Answer:

Hi

Step-by-step explanation:

In

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In the year 1985, a house was valued at $120,000. By the year 2005, the value had appreciated exponentially to $145,000. What wa
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Answer:

The annual growth rate between 1985 and 2005 is 0.95%

The value of the house in the year 2010 is $152,018

Step-by-step explanation:

Let the annual growth rate = r

Value of the house in year 1985 = $120,000

Value of the house in year 2005 = $145,000

Time (t) = 2005 - 1985

            = 20 years

A = P (1 + r)^t

145000 = 120000 (1 + r) ^20

(1 +r)^20 = 145000 / 120000

(1 +r)^20= 1.2083

(1 +r)^20= (1.2083)^1/20

(1 +r)^20= 1.0095

r = 1.0095 - 1

r = 0.0095

r% = 0.0095 x 100

    = 0.95%

Value of the house in year 2010

=145000(1 + r)^5

=145000 (1 + 0.0095)^5

= 145000 x 1.0484

=$152,018

3 0
3 years ago
I need help pls
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Step-by-step explanation:

5 0
2 years ago
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Two researchers are studying the decline of orangutan populations. In one study, a population of 784 orangutans is expected to d
zhuklara [117]
Step 1:
Set Variables (We will use x & y)

x = years
y = total orangutan population

Step 2:
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784 - 25x = y
817 - 36x = y

Step 3:
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784 - 25x = 817 - 36x
784 = 817 - 11x
-33 = -11x
3 years = x
5 0
3 years ago
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