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3 years ago

Select the equation that contains the point (4,7) and in which the slope equals 1

Mathematics

1 answer:

Art [367]3 years ago

7 0

Answer:

y-7=x-4

Step-by-step explanation:

If you change the equation to y=mx+b yout would get Y=x+3 plug in the point (4,7) and you would get 7=4+3

7=7 so that is correct.

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if motorist drove a distance of 90km at constant speed for the first 40km and then drove 30 km/hr faster for the rest of the jou

elena55 [62]

Answer:

Step-by-step explanation:

The motorist drove at a distance of 90km at a constant speed for the first 40km, and then 20 km/hr faster for the rest of the journey.

The whole journey took him 1hr.

Let S denotes the average speed (in km/hr) for the first 40 km.

Hence we get the following relation,

40/S + (90 - 40)/(S + 20) = 1

or 50/(S + 20) = 1 - 40/S = (S - 40)/S

or (S + 20)(S - 40) = 50S or S^2 - 70S - 800 = 0 or (S - 80)(S + 10) = 0

or S = 80 (km/hr) [Ans]

[S cannot be negative value]

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3 years ago

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sergiy2304 [10]

Answer:

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Step-by-step explanation:

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4 years ago

Simplify the expression. Write your answer in positive exponent form: <br> (1/4) ^3 x (1/4) ^7

Strike441 [17]

Answer:

1/4¹⁰

Step-by-step explanation:

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4 years ago

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Step-by-step explanation:

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Effectus [21]

Answer:

75%

Step-by-step explanation:

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3 years ago

Read 2 more answers

Select the equation that contains the point (4,7) and in which the slope equals 1​

Select the equation that contains the point (4,7) and in which the slope equals 1