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anygoal [31]
3 years ago
13

Julia ride her horse 12 miles in 45 minutes. What is her average speed in mil/hour?

Mathematics
2 answers:
vfiekz [6]3 years ago
8 0

Answer

16miles/h

Step-by-step explanation:

45minutes is 3/4 of an hour (60 minutes) so multiply 12 and 3/4 (75%) to get 4miles. 4 miles is only 1/4 of her hour so just multiply 4 by 4 to get 16miles.

AnnZ [28]3 years ago
4 0

Answer:

16 miles/hour

Step-by-step explanation:

We need to convert minutes to hours.  1 hours = 60 minutes

45 minutes * 1 hour/60 minutes = 45/60 hours = 3/4 hours = .75 hours

12 miles/45 minutes = 12 miles /.75 hours = 16 miles/hour

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x^5y^2/xy^2

= x^5-1 * y^2-2

= x^4

6 0
2 years ago
The third mean of a GP of two numbers 27 and 1/27 is 1. Find the number of means. ​
Artyom0805 [142]

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The mean is \sqrt{3}.

Step-by-step explanation:

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What is greater 6.67 or 6.670
Nitella [24]

Answer:

They are the same

Step-by-step explanation:

4 0
3 years ago
A taxi fare is $3 and then $0.40 for every kilometre. A taxi fare is $9 . How far has the taxi travelled?
Charra [1.4K]

Answer:

y = 3 + 0.40x

Step-by-step explanation:

Fixed cost of taxi fare = $3

Additional cost = $0.40

Let

y = Total cost

x = number of kilometers

The equation:

Total cost = Fixed cost of taxi fare + (Additional cost * number of kilometers)

y = 3 + 0.40x

8 0
3 years ago
Mary has $65,000 to invest in two accounts. The first account is a private savings offering 6% annual interest and the second ac
const2013 [10]

Answer:

first account with 6% interest ( x ) = $46000

second account with 4% interest ( y ) = $19000

Step-by-step explanation:

Principal = $65000

first interest rate = 6%

second interest rate = 4%

assuming ; X = money invested in first account ,  Y = money invested in second account

hence :

( 65000 - y ) * 6% + ( 65000 - x ) * 4% = 3520

3900 - 0.06 y  + 2600 - 0.04 x = 3520

0.04 x + 0.06 y = 3900 + 2600 - 3520

0.04 x + 0.06 y = 2980 ----- ( 1)

        x + y = 65000  ------- ( 2 )

solve equation 1 and 2 simultaneously by elimination method

0.04 x + 0.06 y = 2980 ------  ( 3 )

0.06 x + 0.06 y = 3900 ------- ( 4 )

subtract equation 3 form equation 4

0.02 x  = 920 ,   hence x = $46000

therefore y = $65000 - $46000 =  $19000

6 0
3 years ago
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