Another number: d
One number: 2d + 9
d + 2d + 9 - 10 = 11
3d - 1 = 11
3d = 12
d = 4
Another Number: 4
One Number: 17
2×4 + 9 = 8 + 9 = 17
Let's take a look at the triangles ABC and DCB
1. angles : B=C=90° because they are right triangles (AB perpendicular to BC and DC perpendicular to BC)
2. AC=BD (given)
3. BC is in common (the two triangles have it, you can say it like BC=BC)
So we proved that by SAS(side angle side), the triangles are congruent ABC= DCB
Since the triangles are congrueny, all their sides are equal so we can say that AB=DC
The equation would be y = | x + 1 |.
12.195cm + 9.13cm = <span>21.325 cm</span>
Answer:
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Step-by-step explanation:
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