3 years ago

A point P has coordinates (-8, -2). what are its new coordinates after reflecting point P across the y-axis?

Mathematics

1 answer:

just olya [345]3 years ago

5 0

Answer:

(-8,2)

Step-by-step explanation:The y-value does not change, only the x-value becomes positive.

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What is 2logx−logy+2logz written as a single logarithm? log(xz)^2/y log2x/2yz logx^2y/z^2 logx^2/yz^2

Klio2033 [76]

Answer: $\log\dfrac{x^2z^2}{y}$

Step-by-step explanation:

Properties of logarithm:

$(i)\ \ n\log a = a^n\\\\ (ii)\ \ \log m +\log n =\log (mn)\\\\ (iii)\ \ \log m-\log n =\log\dfrac{m}{n}$

Consider,

$2\log x-\log y+2 \log z\\\\ =\log x^2-\log y+\log z^2\ \ \ \ \text{[By (i)]}\\\\= \log x^2+\log z^2-\log y\\\\=\log(x^2z^2)-\log y\ \ \ \ [\text{By } (ii) ]\\\\=\log(\dfrac{x^2z^2}{y}) \ \ \ \ [\text{By (iii)}]$

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3 years ago

Calculate the markup on an item that cost a store $300.00 and will be marked up 55%

Anni [7]

Answer:

It would be $465 marked up.

Step-by-step explanation:

55% of 300 is 165.

So marked up its 465 and marked down its 135.

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3 years ago

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ioda

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2 years ago

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Is Y=9/3x+2 proportional or no nonprotional

Fiesta28 [93]

Answer:

Non proportional

Step-by-step explanation:

y = mx = proportional

y = mx + b = non proportional

y = mx + b

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Hope that helps!

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2 years ago

7 3/10 as a percentage

Harlamova29_29 [7]

7 3/10 in percent would be $7.3 \times 100 = 730$ %

730%

percent means over 100

So... 730% = 730/100 = 7.3

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3 years ago

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