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charle [14.2K]
3 years ago
15

pls show steps and formula

Mathematics
1 answer:
Sonbull [250]3 years ago
8 0

Step-by-step explanation:

the correct formula for this is the heron's formula

which states that s=√s(s-a)(s-b)(s-c). Where s is a+b+c all divided by 2

s=√(13.5-12)(13.5-9)(13.5-6)

s=√(1.5)(4.5)(7.5)

s=√50.625

s= 7.11 or 7 to the nearest square unit

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Stolb23 [73]

Step-by-step explanation:

So in the equation given, y = 2x - 3

you substitute x for whats given in the table in the x column.

Example

In the graph the first number under the x colum is -1.

y = 2x - 3 in the equation you take out x and put -1.

So now the equation becomes y = 2 × -1 - 3.

Using bedmas to solve the question you should get -5

Which now means y = -5

To plot the point now x would be -1 and y would be -5 (-1, -5)

Same thing for the second number in the x Column.

y = 2 × 1 - 3 which equals -1

To plot it

x = 1 y = -1. (1, -1)

And for the last number 3.

Agai. You substitute x for 3 which makes the equation y = 2 × 3 - 3

this gives you 3 and to plot it

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3 years ago
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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