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r-ruslan [8.4K]
3 years ago
11

Violet finds some nickels and pennies under the couch cushions. How much money (in dollars) does she have if she has 140 nickels

and 70 pennies? How much money (in dollars) does she have if she has xx nickels and yy pennies?
Total value, 140 nickels and 70 pennies (dollars):

Total value, xx nickels and yy pennies (dollars):
Mathematics
1 answer:
Fiesta28 [93]3 years ago
4 0

Answer:

$7.70

Step-by-step explanation:

140x5=700

70= well 70

700+70=770

770/100+7.7

7.7 in money is 7 dollars and 70 cents

:)

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(x ^ 2 - 1)(x ^ 4 + x ^ 2 + 1)
labwork [276]

Answer:

x^6-1

Step-by-step explanation:

first you simplify the product it should look like this: (x^2)^3-1^3

then you simplify the expression by multiplying the exponents it should look like this: x^6-1^3

then you should raise any power equal 1 it should look like this: x^6-1 and thats your answer

6 0
3 years ago
What is the area of a circle with a radius of 2.1cm? Use 3.14 for π.
saul85 [17]

Answer: I got's you lol

A≈13.85cm²

And the radius is 2.1

Step-by-step explanation:

Hope this helps let me know :)

3 0
3 years ago
Read 2 more answers
Tasty Things Bakery recently sold 20 desserts, including 8 brownies. Considering this data, how many of the next 5 desserts sold
Agata [3.3K]

Answer:

About 2 of their next 5 deserts sold would be brownies.

Let's represent this by fractions. If 8 out of the 20 desserts they sold were brownies, that would make the fraction 8/20 represent how many brownies were sold.

Now if you reduce this fraction, you get 2/5, which tells about how many brownies will be sold in the next 5 brownies judging by the other data.

8 0
3 years ago
Find the values of x and y. ​
Sedaia [141]

Answer:Input : A = 12, B = 8

Output : X = 2, Y = 10

Input : A = 12, B = 9

Output : -1

Step-by-step explanation:

7 0
2 years ago
Solve the equation, and check the solutions √(x+9)/4=3.
nadya68 [22]

Answer:

Solution: x = 135

Step-by-step explanation:

Hi there!

First, let´s write the equation:

√(x + 9) /4 = 3

Multiply by 4 both sides of the equation

√(x + 9) = 12

square both sides of the equation

x + 9 = 144

subtract 9 to both sides of the equation

x = 135  

Let´s check the solution:

√(x + 9) /4 = 3

x = 135

√(135 + 9) /4 = 3

√(144) /4 = 3

12/4 = 3

3 = 3

Then, x = 135 is the solution to the equation.

Have a nice day!

8 0
3 years ago
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