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2 years ago

Eighty decreased by six times eight

Mathematics

2 answers:

Stells [14]2 years ago

8 0

80-6×8= answer decrease is reduced..... does this help

mariarad [96]2 years ago

4 0

592 i think.....
i hope that helped

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Elizabeth bought 6 lipsticks for $15. How many lipsticks can be bought for $60

dmitriy555 [2]

Answer:

4 lipsticks

Step-by-step explanation:

15+15=30, 30+30=60

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2 years ago

Question: How is dividing 250 by 50 the same as dividing 2,500 by 500?

Vladimir [108]

Well dont you have to bring down the zeros than you will have the answer

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3 years ago

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What is 7 1/2 - 3 4/41

Radda [10]

The LCD of 2 and 41 is 82 so we write 1/2 as 41/82:-

7 41/82 - 3 8/82

= 4 33/82 Answer

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3 years ago

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Which equation is true?

ch4aika [34]

Answer : $9x^2 - 25 = (3x - 5)(3x + 5)$

(1) $9x^2 - 25 = (3x - 5)(3x - 5)$

Use FOIL method to mulitply (3x – 5)(3x – 5)

$(3x - 5)(3x - 5) = 9x^2 - 30x + 25$

(2) $9x^2 - 25 = (3x - 5)(3x + 5)$

Use FOIL method to mulitply (3x - 5)(3x + 5)

$(3x - 5)(3x - 5) = 9x^2 - 15x + 15x - 25 = 9x^2 - 25$

(3) $9x^2 - 25 = -(3x + 5)(3x + 5)$

Use FOIL method to mulitply -(3x + 5)(3x + 5)

$-(3x + 5)(3x + 5) = -(9x^2 + 30x + 25) = -9x^2 -30x -25$

(4) $9x^2 - 25 = -(3x + 5)(3x - 5)$

Use FOIL method to mulitply -(3x + 5)(3x - 5)

$-(3x + 5)(3x - 5) = -(9x^2 - 25) = -9x^2 + 25$

So equation 2 is true

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3 years ago

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The areas of two similar octagons are 9 m² and 25 m². What is the scale factor of their side lengths? PLZ HELP PLZ PLZ PLZ

torisob [31]

Answer:

$\frac{3}{5}$

Step-by-step explanation:

Let the side length for the octagon having 9m² as area = x

Side length for the octagon having area of 25m² = y.

Thus:

$\frac{9}{25} = (\frac{x}{y})^2$ (area of similar polygons theorem)

The scale factor of their sides would be $\frac{x}{y}$ . Which is:

$\sqrt{\frac{9}{25}} = \frac{x}{y}$

$\frac{\sqrt{9}}{\sqrt{25}} = \frac{x}{y}$

$\frac{3}{5} = \frac{x}{y}$

Scale factor of their sides = $\frac{3}{5}$

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2 years ago