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Shtirlitz [24]
3 years ago
7

You have a total of 21 coins, all nickles and dimes. The total value is $1.70 Which of the following is the system of linear equ

ations that represent this scenario? Let n= the number of nickles and let d= the number of dimes.
Mathematics
1 answer:
olga nikolaevna [1]3 years ago
7 0
You need one equation for the physical nickels and dimes, which total to 21:

n+d=21

Secondly, you need one equation for the numerical value of those nickels and dimes. We know nickels are worth $0.05 and dime are worth $0.10:

.05n+.1d=1.70
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JulijaS [17]

Answer: average speed of the train = 4,483.0 km/h

Step-by-step explanation:

Speed = Distance / Time

Distance = 66 km

Time = 15.47  cancelling 15, we have 60 sec added to 47 sec

         <u> - 14.54</u>

=         14.   107    60 + 47

         <u> - 14.  54</u>

<u>                     53secs</u>

53secs to hours becomes =

60 secs = 1 min

60 min= i hour

therefore 53seconds =53/3600=0.0147222hours

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Rounding to 1 dp becomes= 4,483.0 km/h

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2 years ago
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andreyandreev [35.5K]

Answer:

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Hope this helps!

Step-by-step explanation:

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8 0
2 years ago
Pablo tiene $150 pesos, se gastó la tercera parte de su dinero el domingo, y el lunes se gastó las 2/5
sergeinik [125]

Answer:

Step-by-step explanation:

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2 years ago
Given h(x) = |x+3| -5
statuscvo [17]

Answer:

The parent function f(x) is equal to f\left(x\right)=\left|x\right|

The translations is 3 units to the left and 5 units down

Step-by-step explanation:

we have

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so

The rule of the transformation of f(x) to h(x) is equal to

(x,y) -----> (x-3,y-5)

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AysviL [449]
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8 0
3 years ago
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