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umka21 [38]
2 years ago
11

Wind forms dunes through ___.

Mathematics
1 answer:
Leto [7]2 years ago
7 0

Answer:<u><em> I think it would have to be c) Sublimation</em></u>

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2 1/3 + 3 2/3 = 6 hours total practiced
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3x-9=-21 equation in words
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'nine less than three times a number is negative twenty-one.'
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3 years ago
Sure face of a prism
vladimir2022 [97]

Answer:

Step-by-step explanation:

5 0
3 years ago
A change jar contains nickels, dimes and quarters. The total amount of money in the jar is $1.90. The amount of nickels is one m
telo118 [61]

Answer:

Number of dimes = 3

Number of nickels = 7

Number of quarters = 5

Step-by-step explanation:

Let x be the number of dimes in the jar.

The amount of nickels is one more than twice the number of dimes, then the amount of nickels is 2x+1.

The number of quarters is one half the total number of nickels and dimes, so the number of quarters is \frac{1}{2}(x+2x+1)=\frac{1}{2}(3x+1)

Fill in the table

\begin{array}{ccc}&\text{Number of coins}&\text{Value in these coins in cents}\\ \\\text{Dimes}&x&10x\\\text{Nickels}&2x+1&5(2x+1)\\\text{Quarters}&\frac{1}{2}(3x+1)&25\cdot \frac{1}{2}(3x+1)\end{array}

Thus, the total sum in cents is

10x+5(2x+1)+\dfrac{25}{2}(3x+1)\\ \\=10x+10x+5+\dfrac{75}{2}x+\dfrac{25}{2}\\ \\=20x+37.5x+5+12.5\\ \\=57.5x+17.5

The total amount of money in the jar is $1.90 that is 190 cents. So,

57.5x+17.5=190\\ \\575x+175=1,900\ [\text{Multiplied by 10}]\\ \\575x=1,900-175\\ \\575x=1,725\\ \\x=3

Number of dimes = 3

Number of nickels = 7

Number of quarters = 5

Check the total amount of money in the jar:

3\cdot 10+7\cdot 5+5\cdot 25=30+35+125=190\ cents =\$1.90

4 0
3 years ago
Andrew had a collection of 300 baseball cards at the beginning of the summer After the summer Andrew had traded some of his base
Norma-Jean [14]

Answer:

The percentage decrease is 29%

Step-by-step explanation:

Given

Initial = 300

Final = 213

Required

Determine the percentage decrease

This is calculated as thus:

\%Percentage = \frac{|Final - Initial |}{Initial} * 100\%

Substitute values for Final and Initial

\%Percentage = \frac{|213 - 300|}{300} * 100\%

\%Percentage = \frac{|-87|}{300} * 100\%

<em>Get absolute value of -87</em>

\%Percentage = \frac{87}{300} * 100\%

\%Percentage = \frac{87* 100\%}{300}

\%Percentage = \frac{8700\%}{300}

\%Percentage = 29\%

Hence, the percentage decrease is 29%

6 0
3 years ago
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