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andrezito [222]
2 years ago
8

Kathy has $2.10 in her pocket. She only has two different types of coins. She has the same number of each coin. What kinds of co

ins does she have and how many of each does she have?​
Mathematics
1 answer:
sweet-ann [11.9K]2 years ago
5 0

Answer:

6 quarters and 6 dimes

Step-by-step explanation:

since there is 6 quarters it would be 6x$.25 which is $1.50, and each dime is worth 10 cents so 6x$.10 is $.60, and $1.50+$.60=$2.10

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Which equation represents a population of 250 animals that decreases at an annual rate of 21%
guajiro [1.7K]

Answer:

y= 250( 1-0.21)^x

Step-by-step explanation:

This represents exponential decay

6 0
4 years ago
Change the subject of this equation to L<br> P=2(L+B)
dusya [7]

                                                   <u> P = 2 (L + B)</u>

Divide each side by  2 :           P/2  =  L + B

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3 0
3 years ago
A small grain silo is filled with wheat at the end of each season. If the silo is only half full, how many cubic meters of wheat
Nonamiya [84]

Answer:

Volume of wheat = 147.26 m³ (check the explanation)

Step-by-step explanation:

The question still lacks some details such as the size of the silo. We will go forward by assuming the size of the silo to aid our calculation. Silos are cylindrical storage structures that range from 3 - 27 m in diameter and 10 - 90 m in height. For the purpose of this question, let's assume that the size of the silo is 5 m (diameter) by 15 m (height).

Let's list out the parameters to be used:

diameter (D) = 5 m; r = D ÷ 2 ⇒ r = 5/2 = 2.5 m,

height (h) = 15 m

Volume of silo = πr²h = π * 2.5² * 15

V (silo) = <u>294.52</u> m³

The silo is half full ⇒ ½ * V

Volume of wheat stored is given by half of the silo volume, since the silo is half-full

V (wheat) = ½ * 298.52

V (wheat) = <u>147.26</u> m³

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