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3 years ago

-1/2 (-6x + 3) plz helpppp

Mathematics

2 answers:

umka21 [38]3 years ago

8 0

Answer:

-1/2

Step-by-step explanation:

USPshnik [31]3 years ago

5 0

Answer:

6x-3/2

Step-by-step explanation:

-1/2(-6+3)

-1(-6x+3)/2

-1(-6x+3)/2

6x-3/2

and thats how u get your answer.

i hope this helps :)

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The 888 mile trip to the ranch took three times as long as the 280 mile trip to the ocean because the speed was 4 mph less than

ziro4ka [17]

Alright, lets get started.

Suppose the speed to the ranch = x mph

So, speed to the ocean will be = (x-4) mph (because the speed was 4 mph less than the speed to the ranch)

Distance to the ranch = 888 miles

time moving to the ranch $= \frac{distance}{speed}$

time moving to the ranch $= \frac{888}{x}$

time moving to the ocean $= \frac{280}{x-4}$

As per given in question, the 888 mile trip to the ranch took three times as long as the 280 mile trip to the ocean , means

$\frac{888}{x} = 3 * \frac{280}{x-4}$

$\frac{888}{x}= \frac{840}{x-4}$

Corss multiplying

$888 (x-4) = 840 x$

$888 x - 3552 = 840 x$

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Hence speed to ranch = 74 mph

Hence speed to ocean = $74 - 4 = 70$ mph

time for trip to ranch = $\frac{888}{74} = 12$ hrs

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So, speed to ranch is 74 mph and trip time is 12 hrs and speed to ocean is 70mph and time is 4 hrs.

Hope it will help :)

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Step-by-step explanation:

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shusha [124]

<h3>Answer: B) 6</h3>

===============================================

Explanation:

Add the equations by adding the terms straight down.

The x terms add to x+x = 2x.

The y terms add to y+(-y) = y-y = 0y = 0, so the y terms go away

The constants add to 5+7 = 12

The z terms add to -z+z = 0z = 0 and those go away as well

After all that adding, we have 2x = 12 which solves to x = 6 after dividing both sides by 2.

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