3 years ago

Substitution method -3x + 3y = 4 -x + y = 3

Mathematics

1 answer:

diamong [38]3 years ago

3 0

See photo below hopefully it helps!

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Read 2 more answers

1.3/4=0.975/3 determine whether the proportion is true or false

user100 [1]

Answer:

The proportion is true.

Step-by-step explanation:

By using the formula below, you can test the correctness of any proportion.

$\frac{a}{b}=\frac{c}{d}$

$ad=bc$

By plugging in the given numbers, you can test the proportion.

$\frac{1.3}{4} =\frac{0.975}{3}$

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Thus, the proportion is correct.

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3 years ago

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3 years ago

Find the area of the triangle.

Thepotemich [5.8K]

Answer:

$270 \:m^2$

Step-by-step explanation:

The area of the triangle.

$bh\frac{1}{2}$

$b \times h \times \frac{1}{2}$

$20 \times 27 \times \frac{1}{2}$

$540 \times 1/2$

$=270$

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4 years ago