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11111nata11111 [884]
3 years ago
14

Sarah has 25 coins that are dimes and nickels. Together they total $2.00. How many of each type does she have?

Mathematics
2 answers:
Ivanshal [37]3 years ago
8 0

Answer:

15 dimes and 10 nickels

Step-by-step explanation:

15 dimes because 15 multiplied by 10 cents is $1.50

10 nickels because 10 multiplied by 5 cents is $0.50

15 x 0.10 = 1.50         10 x 0.50 = 0.50

0.50 + 1.50 = 2.00

lianna [129]3 years ago
3 0

Answer:

15 dimes 10 nickles

Hope this helps!


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A country's population in 1992 was 72 million. In 1998 it was 76 million. Estimate the population in 2012 using the exponential
stepan [7]
We assume the annual percentage increase is the same. We will work out the constant k using the formula

We have
P = 76
A = 72
t = 6 years (from 1992 to 1998)

Substitute into the formula
76=72e^{6k}
\frac{76}{72}=e^{8k}
Take log both sides give
ln( \frac{76}{72})=ln(e^{6k})
0.05406722127=6k
k=0.009

We can now work out the number of population by the end of 2012 using the formula

We have
A = 72 million
k = 0.009
t = 10 years (1992 to 2012)

P=72e^{0.009*10}P=78.78≈79 million


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3 years ago
What percent is 40 minutes of 1 hour
12345 [234]
40/60= 0.67 (i.e. 2/3)= about 66.67%
8 0
3 years ago
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How can I convert a fraction into a decimal and a decimal into a fraction?
gogolik [260]
Find a number you can multiply by the bottom of the fraction to make it 10, 100, or 1000 and multiple both top and bottom by that number then write down just the top number putting the decimal point in the correct spot.
3 0
3 years ago
Q = m-a/x (solve for m)​
DaniilM [7]

Answer:

m=a/x+Q

Step-by-step explanation:

Q=m-a/x

To solve this we need to isolate m so we will bring -a/x to the other side of the equal sign so it will become positive i.e. ax now will be  written as a/x+Q=m

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7 0
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Which expression is NOT equivalent to −3/8·(−4+1/2)?<br><br><br> Drag this expression to the box.
Aleks [24]

Answer:

The answer to your question is the first option

Step-by-step explanation:

Original expression

                                 -3/8 (-4 + 1/2)

First option    -3/8 (-4)  + (3/8)(1/2)       This option is not equivalent because

                                                              they forgot the negative sign of the

                                                              second term.

Second option (-3/8)(-4) + (-3/8)(1/2)    This option is equivalent to the

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Third option    (-3/2)(-3 1/2)                 This option is equivalent to the original

Fourth option  (-3/8)(-3) + (-3/8)(-1/2)  This option is equivalent to the original

4 0
3 years ago
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