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lutik1710 [3]
2 years ago
5

I need help with this math problem plz help and plz explain your answer​

Mathematics
2 answers:
IceJOKER [234]2 years ago
8 0

Answer:

34.04 cm²

Step-by-step explanation:

Formula for a trapezoid:

a + b ÷ 2 × height

Substitute the values:

11.7 + 3.1 = 14.8

14.8 ÷ 2 = 7.4

7.4 × 4.6 = 34.04

The answer is 34.04 cm²

Elanso [62]2 years ago
7 0

Answer:

i've done this before but i forgot how i explained it, but it's the first one

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alekssr [168]

The solution of the equations is (-2, -1)

<h3>System of equation:</h3>

2x - 3y = -1

11x  - 9y = -13

Using elimination method let multiply the first equation by -3.

Therefore,

-6x + 9y = 3

11x - 9y = -13

5x = -10

x = -10 / 5

x = -2

let's find y as follows;

2(-2) - 3y = -1

-4 - 3y = -1

-3y = -1 + 4

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y = 3 / -3

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learn more on system of equation here: brainly.com/question/1451150

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Answer:

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Step-by-step explanation:

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