3 years ago

The decibel level of sound in a quiet office is 10−6watts/m2.

Mathematics

1 answer:

Liono4ka [1.6K]3 years ago

4 0

I don’t understand your question can you explain it more

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Choose the system of equations which matches the following graph:

aleksandr82 [10.1K]

The coordinates give are
(0,6)
(4,9)

(3,6)
(2,3)

These points can be substituted into the systems of equation in the choices and inspect which equations satisfy the value of the points. Doing this, the answer is
3x - 4y = -24
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2 years ago

Keira keeps a record of the number of songs she downloads each months

prohojiy [21]

Good for Keira. Is there a question that goes along with this?

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3 years ago

How do i find the area of a trapezoid (pictures provided)

scoray [572]

Answer:

(10x - 5) square units.

Step-by-step explanation:

Let the lengths of equal sides be x units.

Hence, AB + AD + DC = x + x + x = 3x

Therefore, BC = 3x - 2

$Area \: of \: trapezoid \\ = \frac{1}{2} (AD + BC) \times 5 \\ = \frac{1}{2} (x + 3x - 2) \times 5 \\ = \frac{1}{2} (4x - 2) \times 5 \\ = \frac{1}{2} \times 2 (2x - 1) \times 5 \\ = (2x - 1) \times 5 \\ = (10x - 5) \: {units}^{2}$