3 years ago

Ethan planted a tree that was 1.85 meters tall. Several years later, the tree is 5.30 meters talI.

Mathematics

2 answers:

TiliK225 [7]3 years ago

6 0

Answer:

X+1.85= 5.30

x=7.15 meters

Kobotan [32]3 years ago

3 0

Answer:

3.45

Step-by-step explanation:

5.30-1.85= 3.45

♤sorry if I'm wrong♤

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Solve: x + y = 7 3x - 2y = 11 By using Substituting method.

Salsk061 [2.6K]

$\large\underline{\sf{Solution-}}$

$\sf \longmapsto x + y = 7 \: \: - - - (i)$

$\sf \longmapsto 3x - 2y = 11 \: \: - - - (ii)$

By first equation,

$\sf \longmapsto x + y = 7$

$\sf \longmapsto x = 7 - y$

Now, we can find the original value of y.

$\sf \longmapsto 3x - 2y = 11$

$\sf \longmapsto 3(7 - y) - 2y = 11$

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$\sf \longmapsto - 5y = 11 - 21$

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$\sf \longmapsto y = \dfrac{ - 10}{ - 5}$

$\sf \longmapsto y = 2$

Now, we can find the original value of x.

$\sf \longmapsto x + y = 7$

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$\sf \longmapsto x = 7 - 2$

$\sf \longmapsto x = 5$

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2 years ago

Read 2 more answers