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3 years ago

Solve 3.5x-2.8=-3.8x-7.2 graphically

Mathematics

1 answer:

pshichka [43]3 years ago

3 0

x= -0.6

The graph is attached in the figure below.

Step-by-step explanation:

Solve $3.5x-2.8=-3.8x-7.2$

Simplifying:

$3.5x-2.8=-3.8x-7.2$

Combining like terms:

$3.5x+3.8x=-7.2+2.8\\7.3x=-4.4\\x=\frac{-4.4}{7.3}\\x=-0.6$

x= -0.6

The graph is attached in the figure below.

Keywords: Graph the equation

Learn more about Graphing the equation at:

#learnwithBrainly

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coldgirl [10]

$\large{\underline{\underline{\pmb{\sf {\color {blue}{Solution:}}}}}}$

Given,

Area = 225 yd²

Base = 30 yd

Height = [To be calculated]

To find:

The height of the given triangle.

We know that, area of a triangle is:

$\frac{1}{2} \times (b \times h) \\ \\ \leadsto \frac{1}{2} \times (30 \times h) \\ \\ \leadsto \frac{1}{2} \times 30h \\ \\ \leadsto \frac{1}{ \cancel{2}} \times \cancel{30}h \\ \\ \leadsto1 \times 15h \\ \\ \leadsto \: h = 15 \: yd$

Therefore, the require height is 15 yd.

$\green\star$ Proof:

$\frac{1}{2} \times (b \times h) \\ \\ \leadsto \frac{1}{2} \times (30 \times 15) \\ \\ \leadsto \frac{1}{ \cancel{2}} \times \cancel{450} \\ \\ \leadsto1 \times 225 \\ \\ area = 225 {yd}^{2}$

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kramer

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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