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4 years ago

Passes through(4,7)Slope=2

Mathematics

1 answer:

Anna71 [15]4 years ago

7 0

Answer:

Step-by-step explanation:

Slope = 2 and passes point (4,7)

The equation is y - y1 = m(x - x1)

And y1 = 7 while x1 = 4, m = 2

: - y - 7 = 2(x - 4)

y - 7 = 2x - 8

y = 2x - 8 + 7

y = 2x - 1 this is the equation

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Answer:

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Step-by-step explanation:

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4 years ago

Greg is designing a clock face. Using the center of the clock face as the origin, he keeps its diameter at 10 units. Match the p

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4 years ago

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KATRIN_1 [288]

Answer:

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Step-by-step explanation:

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It takes Kay 20 minutes to drive to work traveiling 45 mph. Two minutes after she left home this morning, her husband, Dan, star

BARSIC [14]

Answer:

Kay's husband drove at a speed of 50 mph

Step-by-step explanation:

This is a problem of simple motion.

First of all we must calculate how far Kay traveled to her job, and then estimate the speed with which her husband traveled later.

d=vt

v=45 mph

t= 20 minutes/60 min/hour = 0.333 h (to be consistent with the units)

d= 45mph*0.333h= 15 miles

If Kay took 20 minutes to get to work and her husband left home two minutes after her and they both arrived at the same time, it means he took 18 minutes to travel the same distance.

To calculate the speed with which Kate's husband made the tour, we will use the same initial formula and isolate the value of "V"

d=vt; so

v= $\frac{d}{t}$

d= 15 miles

t= 18 minutes/60 min/hour = 0.30 h (to be consistent with the units)

v= $\frac{d}{t}=\frac{15 miles}{0.3 h}=50mph$

Kay's husband drove at a speed of 50 mph

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4 years ago