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3 years ago

12

Nick and his family traveled by train to New York City. The clocks show when the train left the station and when it arrived in N

ew York City. How long was the train ride?

1 answer:

kirill [66]3 years ago

5 0

Answer:

Answer: 4 hr 15 min is the right answer

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Find the slope of the line

grandymaker [24]

Answer: -4/5 or -0.8

Step-by-step explanation:

m= change in y / change in x

-4/ 5

8 0

3 years ago

Jane has a pre-paid cell phone with Splint. She can't remember the exact costs, but her plan has a monthly fee and a charge for

yan [13]

Answer:

The costs of the plan are $0.15 per minute and a monthly fee of $39

Step-by-step explanation:

Let

x ----> the number of minutes used

y ----> is the total cost

step 1

Find the slope of the linear equation

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have the ordered pairs

(100,54) and (660, 138)

substitute

$m=\frac{138-54}{660-100}$

$m=\frac{84}{560}=\$0.15\ per\ minute$

step 2

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=0.15\\point\ (100,54)$

substitute

$y-54=0.15(x-100)$

step 3

Convert to slope intercept form

Isolate the variable y

$y-54=0.15x-15\\y=0.15x-15+54\\y=0.15x+39$

therefore

The costs of the plan are $0.15 per minute and a monthly fee of $39

6 0

3 years ago

If a = 1, find the values of b, c and d that make the given expression equivalent to the expression below.

vlada-n [284]

Answer:

To do this, you need to multiply out the expressions. This is a bit tedious, but remember like FOIL for binomials, for these trinomials you must multiply each term. If you need a step-by-step, I'd be happy to provide it. Let me know.

Once you have simplified the expression, you get

-x-9/2x-4

But, the problem stipulates that a must equal 1. We can equivalently factor out the negative sign and put it on the denominator with no change to write

x+9/-(2x-4) = x+9/-2x+4

So, seeing where each coefficient corresponds between the two expressions, you get a = 1, b = 9, c = –2, and d = 4.

8 0

3 years ago

In order to solve the equation −3x + 6 = 5, the first step is to

Angelina_Jolie [31]

The first step is to subtract 6 from both sides to cancel it out. You will be left with -3x= -1.

6 0

3 years ago

Read 2 more answers

There are different ways to represent 2 2/3 Select the three choices below that represent 2 2/3.

AfilCa [17]

Answer:

2 6/9. 2 24/36

Step-by-step explanation:

7 0

3 years ago