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kakasveta [241]
3 years ago
11

You break you break your piggy bank which is filled with nickels and quarters. You have 32 coins and a total of 5.20. How many q

uarters and nickels do you have ?
Mathematics
1 answer:
Tatiana [17]3 years ago
4 0

Answer: 14 nickels and 18 quarters.

Step-by-step explanation:

Let x = Number of nickels , y = Number of quarters

As per given , we have

x+ y= 32            (i)

0.05x+0.25y= 5.20              (ii)

Multiply (ii) by 4 , we get

0.2x+y = 20.8          (iii)

Subtract (iii) from (i) , we get

0.8x = 11.2

\Rightarrow\ x=\dfrac{11.2}{0.8}\\\\\Rightarrow\ x = 14

Put value of x in (i) , we get

y =32-14 = 18

Hence, we have 14 nickels and 18 quarters.

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Steve is turning half his backyard into a chicken fan. His backyard is a 24 m x 45 m rectangle. He wants to put a chicken wire f
Phoenix [80]

Answer:

51 meters

Step-by-step explanation:

Steve is turning half his backyard into a chicken fan. His backyard is a 24 m x 45 m rectangle. He wants to put a chicken wire fence that stretches diagonally from one corner to the opposite corner. How many meters of fencing will Steve need?

We are to find the meters of fencing for the diagonal.

We solve the question using Pythagoras Theorem

= c² = a² + b²

Where

c = Diagonal

a = Width

b =Length

Diagonal² = Width² + Length ²

Hence:

Diagonal ² = 45² + 24²

Diagonal = √45² + 24²

Diagonal = √(2601)

Diagonal = 51 m

Therefore, the meters of fencing for the diagonal that Steve would be needing = 51 meters

7 0
3 years ago
Select the expression that represents the simplified difference.
Setler79 [48]

The simplified expression for the given function is 2x + 4 - ( 1 / x-1). The correct option is A.

<h3>What is an expression?</h3>

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that the functions are f(x) = x + 2 and h(x) = 1 / x-1. The value of the function 2f(x) – h(x) will be calculated as,

E = 2f(x) – h(x)

E =  2( x + 2 ) - ( 1 / x-1)

E = 2x + 4 - (1/x-1)

To know more about an expression follow

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8 0
1 year ago
Read 2 more answers
576 bottles of water at the snack shop people bought 469 bottles of water how many bottles of water are there now
Vedmedyk [2.9K]
Subtract 469 from 576
576
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4 years ago
Heather is going to order a pizza and can choose from a thin or a thick crust, white or red sauce, and one of either mushrooms,
STALIN [3.7K]
You can choose A. It’s a pretty solid choice
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4 years ago
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3.) Write an inequality for the phrase "two more than three times a number is at
stiks02 [169]

Answer:

3x + 2 ≤ 53

Step-by-step explanation:

"2 more than" means that there will be a + 2 in the equation. "3 times a number" means that 3 is multiplied by an unknown number which can be represented by a variable such as x. "At most" means less than or equal to, since the number cannot be greater than.

So generally, you might want to write the equation as 2 + 3x ≤ 53, but 2 + 3x is not in y = mx + b form. Basically, you need to write it as 3x + 2 ≤ 53 because that's how math works.

4 0
3 years ago
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