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ira [324]
3 years ago
10

When x=2 and y=4 what is value of 7x-y

Mathematics
2 answers:
shusha [124]3 years ago
5 0
You have to substitute each number in. So 7(2)-4=10
alexira [117]3 years ago
4 0

Answer:

10

Step-by-step explanation:

So what we are doing in this question is simple substitution

So x = 2, y = 4

7x - y

So lets split it up first

7x

7 * (2)

We plugged in 2 for x

This is equal to 14

So the equation is looking like

14 - y

Now lets do the second part

- y

- (4)

We plugged in 4 for y

So no our equation looks like

14 - 4

= 10

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Find the height of a triangle that has an area of 54 cm2 with the width 3 cm less than its height.
iren2701 [21]

The height of a triangle is 9 cm

<h3>What is Triangle?</h3>
  • A polygon with three edges and three vertices is called a triangle. It is one of the fundamental geometric shapes. Triangle ABC is the display style for a triangle with vertices A, B, and C.
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given that

let the height of the triangle be x

then the width is x-3

Area = \frac{height \times length}{2}

54 = x(x -3)

54 = x^2 -3x

x = 9

height = 9 cm

width = 6cm

Therefore, the height of a triangle is 9 cm.

To learn more about the triangle with the given link brainly.com/question/11897796

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Step-by-step explanation:

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What is the order pair for the question y=-3x-3
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Answer:

You get two, (0,-3) and (1,0)

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Step-by-step explanation:

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