MATHEMATICS MIDDLE SCHOOL

Find two ways to determine the number of dimes in $8.70

Answers

Answer 1
Answer:

Both approaches yield the same result, so there are 87 dimes in $8.70.

To determine the number of dimes in $8.70, we can use two different approaches:

Approach 1: Division

1 dime = $0.10

To find the number of dimes, divide the total amount by the value of one dime:

Number of dimes = $8.70 / $0.10

Number of dimes = 87 dimes

Approach 2: Counting by 10 cent

$8.70 is equivalent to 870 cents (since 1 dollar = 100 cents).

Since each dime is worth 10 cents, we can find the number of dimes by dividing the total cents by 10:

Number of dimes = 870 cents / 10 cents

Number of dimes = 87 dimes

Both approaches yield the same result, so there are 87 dimes in $8.70.

To know more about dimes:

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Answer 2
Answer: It takes 10 dimes to make a dollar so multiply 10 x 8 that will = 80. It also takes 7 dimes to make .70 cents so the answer is is 87 dimes to make $8.70

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How many 2/5 are in 4?

Answers

 For this case what we must do is a division using the following relationship:
 N = (total amount) / (partial amount)Substituting values we have:
 N = (4) / (2/5)
 Rewriting the fraction we have:
 N = (20) / (2)
 Simplifying we have:
 N = 10
 Answer:
 The number of times repeated 2/5 for 4 is:
 10

You decide to put $2000 in a savings account to save for a $3000 down payment on a new car. If the account has an interest rate of 4% per year and is compounded monthly, how long does it take until you have $3000 without depositing any additional funds?

Answers

Answer:

t=10.2\ years      

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

A=P(1+(r)/(n))^(nt)  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

t=?\ years\nP=\$2,000\nA=\$3,000\n r=0.04\nn=12  

substitute in the formula above  

3,000=2,000(1+(0.04)/(12))^(12t)

1.5=((12.04)/(12)})^(12t)    

Applying log both sides

log(1.5)=log[((12.04)/(12)})^(12t)]

log(1.5)=(12t)log((12.04)/(12))

t=log(1.5)/[(12)log((12.04)/(12))]  

t=10.2\ years        

Brandon is making apple cider. If he makes 6 quarts,how many 1-cup servings can he pour.??

Answers

2 cups go into 1 pint, and 2 pints go into 1 quart. so 1q=4c. the answer would be 24 cup servings
answer is 24 cups servings  

Find the square root of 7-2√5​

Answers

Answer:√5 - √2

Step-by-step explanation:

= √(5 + 2 - 2√10 )

= √{(√5)² +(√2)² - 2.√5.√2}

= √(√5 - √2)² (by identity a² + b² -2ab = ( a-b)²)

= √5 - √2

5√5 = 11.8033989 or -2√5+7

A box of uncooked spaghetti costs $0.1369 per ounce. How much is this cost to the nearest cent?

Answers

$0.14, because the number to the right of the 3, which is 6, will round up because it's greater than 5

Sara spent half of her allowance going to the movies. She washed the family car and earned 9 dollars. What is her weekly allowance if she ended with 16 dollars ?

Answers

$7 because if she has $16 by the end of the week and she earned $9 by washing the car, all you would have to do is subtract $9 from $16 and you would get her original allowance
$7, I think. I would not be too sure about it, though.
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