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Andru [333]
3 years ago
14

A colony of 100,000 ants has been declining in number at a rate of 11.4% per month. If allowed to decline uninhibited, how long

will it take the population to decrease to 25,000 ants? Round to the nearest tenth.
a. 17.6 months
b. 12.2 months
c. 5.3 months
d. 24.3 months
Mathematics
2 answers:
Rom4ik [11]3 years ago
8 0

Answer:

b. 12.2 months

den301095 [7]3 years ago
5 0
Im sorry i need the point but I’ll calculated later once I’m done
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Write an equation of the line that passes through (4, 5) and is perpendicular to the line y = -4x+6.
andrey2020 [161]
Y = -1/4x + c
5 = -1/4 x 4 + c
5 = -1 + c
c = 6
y = -1/4 + 6
8 0
2 years ago
What single decimal multiplier would you use to increase by 18% followed by a<br> 12% decrease?
ValentinkaMS [17]

Answer:

The single decimal multiplier used to increase by 18% followed by a  12% decrease is 0.21.

Step-by-step explanation:

Let 'x' be the number

As first the number has to be increased by 18%

so

Step 1: write the percentage '18%' in decimal form

18% = 0.18    

Step 2: For percentage increases: add the decimal to 1

1 + 0.18 = 1.18    

Step 3: Multiply the number x by the multiplier, found in Step 2

x × 1.18 = 1.18x

<u><em>NEXT WE HAVE TO DECREASE 1.18x by 12%</em></u>

Apply the same method but with a number 1.18x

  • Write the percentage '12%' in decimal form

12% = 0.12

  • For percentage decreases: subtract the decimal to 1

1 - 0.18 = 0.18

  • Multiply the number 1.18x by the multiplier, found in Previous step

1.18x × 0.18 = 0.21x

Therefore, the single decimal multiplier used to increase by 18% followed by a  12% decrease is 0.21.

7 0
3 years ago
56% of what number is 84
damaskus [11]
We set up a proportion: 84/?= 56/100

Cross multiply: 56*?= 84*100
⇒ ?= 84*100/56= 150

56% of 150 is 84.
7 0
3 years ago
What is the midpoint of the segment whose endpoints are 17,1 and -9,3
Veseljchak [2.6K]
Easy ill tell u and then do a equation first sense it has - it means u have to subtract alright it goes like this. 17,1
                                                    9,3
                                                   --------
                                                    7,8
and this is ur answer as u see in my equation ur welcome only give me brainiest only if im right 
5 0
3 years ago
What is 5/8ths of 80??
Vadim26 [7]
Multiply 80 by 5/8ths.

80*5/8=50
8 0
3 years ago
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