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3 years ago

What percentage of a dollar is the value of each coin combination?

Mathematics

1 answer:

Brut [27]3 years ago

5 0

Answer:

Step-by-step explanatinon:

percent is per hundred

4 dimes is 40 cents or $0.40 or 40/100 of a dollar which is40%

1 nickel and 3 pennies or 8 cents or $0.08 Or 8/100 or 8%

5 quarters and one dime is 135/100 or $1.35 or 135/100 which is 135%

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What is 20 percent of 576

ryzh [129]

115.20 is 20% of 576
576 x .20 = 115.20

5 0

3 years ago

The cost of a High Definition television now averages $700, but the cost is decreasing about 15% per year. In how many years wil

Roman55 [17]

Answer: 7.7 years

Step-by-step explanation:

Given

The cost of HD TV is $700 and it is decreasing at the rate of 15% per year

After one year it becomes

$\Rightarrow 700-700\times 15\%\\\Rightarrow 700(1-0.15)$

after 2 year it becomes

$\Rightarrow 700(1-0.15)-700(1-0.15)\times 15\%\\\Rightarrow 700(1-0.15)(1-0.15)\\\Rightarrow 700(1-0.15)^2$

Suppose, after x years it becomes $200

$\Rightarrow 200=700(1-0.15)^x\\\\\Rightarrow \dfrac{2}{7}=0.85^x\\\\\text{Taking log both sides}\\\\\Rightarrow x=\dfrac{\ln (\frac{2}{7})}{\ln (0.85)}\\\\\Rightarrow x=7.7\ \text{years}$

Thus, it takes 7.7 years for the cost to come under $200.

3 0

2 years ago

20 POINTS Congratulations, you just got a job! The company you are working for gave you a $50 signing bonus, and you are being p

olga_2 [115]

Answer:

its the one where the line starts at 50

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Solve 7x - 8 = 3x + 40

Contact [7]

Answer:

$7x-8=3x+40\\7x-3x=40+8\\4x=48\\x=12$

4 0

3 years ago

Read 2 more answers

Half x s for s equals 3/10

777dan777 [17]

1/2 x s, where s equals 3/10 means,

(1/2) x (3/10) which will give (3/20)

You simply multiply the numerators to get 3 and the denominators to get 20.

8 0

3 years ago