3 years ago

How do i solve this |6x-3|=7

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

7 0

Answer:

x=5\3,-2\3

Step-by-step explanation:

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Using mental math, the approximate tip to leave for a bill of $81.79, if you tip 15% would be _____..a.$8.20b.$10.30c.$12.30d.$1

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Answer:

Using mental math, the approximate tip to leave for a bill of $81.79, if you tip 15% would be?

c.$12.30

Step-by-step explanation:

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3 years ago

The diagram below shows a square inside a regular octagon. The apothem of the octagon is 15.69 units. To the nearest square unit

Musya8 [376]

Answer:

C. 647 square units

Step-by-step explanation:

To find the shaded area, subtract the area of the unshaded square from the area of the octagon.

Area of the octagon

$\textsf{Area of a regular polygon}=\dfrac{n\:l\:a}{2}$

where:

n = number of sides
l = length of one side
a = apothem

Given:

n = 8
l = 13
a = 15.69

Substitute the given values into the formula and solve for A:

$\implies \textsf{Area}=\sf \dfrac{8 \cdot 13 \cdot 15.69}{2}$

$\implies \textsf{Area}=\sf \dfrac{1631.76}{2}$

$\implies \textsf{Area}=\sf 815.88\:\:square \:units$

Area of the square

$\implies \textsf{Area}=\sf 13^2=169 \:\:square \:units$

Area of the shaded region

= area of the octagon - area of the square

= 815.88 - 169

= 646.88

= 647 square units (nearest square unit)

3 0

2 years ago

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