Solve 8 + 3 = −13, for each step, identify the property used

Mathematics

1 answer:

Verizon [17]3 years ago

3 0

Answer:

-2

Step-by-step explanation:

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I would love your help! I'll give Brainliest answer!

Dovator [93]

Since the graph is a straight line, its equation is of the form;

$y = mx + c$
Where m is the slope and c is the y intercept

We can use any two points on the straight line to find the value of m and c.

Let us use (0,30) and (4,150)

$m = \frac{150 - 30}{4 - 0}$
This simplifies to,

$m = \frac{120}{4} = 30$
Let us substitute the value of m to obtain,

$y = 30x + c$
Substitute any of the points to find c. It is easier to use (0,30).

$30 = 30(0) + c$
$c = 30$
The equation of the graph now becomes,

$y = 30x + 30$
So in 10 weeks Ben will collect,

$y = 30(10) + 30$
$y = 300 + 30$
$y = 330$
Ben will collect 330 papers.

You can also use any two points to find the equation of this line.

3 0

3 years ago

Read 2 more answers

Toni rows a boat 4.5 km/h upstream and then turns around and rows 5.5 km/h back downstream to her starting point. If her total r

Masja [62]

Answer:

about 26 min

Step-by-step explanation:

Toni rows a boat 4.5 km/h upstream and then turns around and rows 5.5 km/h back downstream to her starting point

First we find the average speed

We add both speed and divide it by 2

$\frac{4.5+5.5}{2} = 5$