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3 years ago

A car travels 120 miles in 3 hours (with a constant spee

Mathematics

2 answers:

Sindrei [870]3 years ago

8 0

Answer:

120 miles = 3 hrs

1 mile = 3/120 = 1/40

200 miles = 1/40 × 200

= 5 hrs

Q2.if we do unitary method

then..

50/25=0.5

1 apple cost 0.5

75=75*0.5 =rupee 37.5

defon3 years ago

4 0

The answer is 4 hours

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Elanso [62]

Answer:

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Step-by-step explanation:

$\: \: \: 2x + 3y = - 6 \\ -2x + 3y = \: \: \: 6 \\ \frac{ + \: \: \: \: \: \: - \: \: \: \: \: \: = - }{ }{} \\ \: \: \: 4x \: \: \: \: \: \: \: \: \: \: \: \: = - 12 \\ \\ x = \frac{ - 12}{4} \\ \\ x = - 3$

now,

$-2( - 3) + 3y = 6 \\ 6 + 3y = 6 \\ 3y = 6 - 6 \\ 3y = 0 \\ y = \frac{0}{ 3} \\ y = 0$

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