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qwelly [4]
3 years ago
11

Help me pls it’s urgent

Mathematics
1 answer:
earnstyle [38]3 years ago
3 0

Answer:

<A = 115

<C = 50

Step-by-step explanation:

<A + <B + <C = 180

SO

(4X -13) +15 +(X+18) =180

5X +20 =180

5X = 160

X= 32

LOG IN TO <A = 4*32 -13 = 115

<C = 32+18 = 50

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Two trains move between two towns. It takes the first train 2 hr 48 min and it takes the second 4 hr 40 min. The rate of the fir
Umnica [9.8K]

Answer:

182 miles.

Step-by-step explanation:

Given:

Two trains move between two towns.

Time taken by first train = 2 hr 48 minutes =

Change minute into hour:

60 minute = 1 hour

1 minute = \frac{1}{60}

48 minutes = \frac{1}{60}\times48=\frac{48}{60} =0.8\ hour

Time taken by first train in hour = 2+0.8=2.8\ hours

Time taken by second train =  4 hr 40 minutes

Similarly, 40 minutes = \frac{40}{60} =0.67\ hour

Time taken by second train in hour = 4+0.67=4.67\ hours

The rate of the first train is 26 mph more than that of the second train.

Question asked:

What is the distance between these towns ?

Solution:

Let speed of second train = x\ miles\ per\  hour

<u>As the speed of the first train is 26 mph more than that of the second train. </u>

Speed of first train = 26+x\ miles\ per\ hour

As two trains move between two towns means distance traveled by both train is same.

By using : Distance=speed\times time

Distance traveled by first train = Distance traveled by second train

speed\times time =

(26+x)2.8=x\times4.67

26\times2.8+x\times2.8=4.67x\\72.8+2.8x=4.67x\\

Subtracting both sides by 2.8x

72.8=1.87x

Dividing both sides by 1.87

x=38.93

Speed of second train = 38.93 miles per hour

Distance=speed\times time

              = 38.93 \times 4.67

              = 181.80 miles.

Thus, the distance between these towns is 182 miles (nearest whole number).

             

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3 years ago
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