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1 year ago

Alexandra paid 10.18 for a pair of earrings this amount includes a tax of 7% what was the cost of the item before tax

Mathematics

2 answers:

Igoryamba1 year ago

7 0

$10.11 is the answer

Pavlova-9 [17]1 year ago

6 0

Original times 1.07=10.18
divide both sides by 1.07
original=9.514

before tax it ws
$9.51

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A line passes through the points (p, a) and (p, –a) where p and a are real numbers and p ≠ 0. Describe each of the following. Ex

MissTica

Answer:

Part A) The slope is undefined

Part B) The equation of the line is $x=p$

Part C) None y-intercept

Part D) The slope of a line perpendicular to the given line is equal to zero

Step-by-step explanation:

we have that

Describe

A) slope of the line

B) equation of the line

C) y-intercept

D) slope of a line perpendicular to the given line

Part A) slope of the line

we know that

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have

$(p,a)\ (p,-a)$

Substitute the values

$m=\frac{-a-a}{p-p}$

$m=\frac{-2a}{0}$ -----> the slope is undefined

Its a vertical line (parallel to the y-axis)

Part B) Equation of the line

we know that

The equation of a vertical line is equal to the x-coordinate of the points through which the line passes.

$x=p$

Part C) The y-intercept

The y-intercept is the value of y when the value of x is equal to zero

The vertical line not intercept the y-axis

None y-intercept

Part D) slope of a line perpendicular to the given line

A line perpendicular to the given line is a horizontal line (parallel to the x-axis)

therefore

The slope is equal to zero

6 0

2 years ago

A cone-shaped pile of gravel has a diameter of 30 m and a height of 9.1 m.

Arte-miy333 [17]

D/2=r
vcone=(1/3)hpir^2
given
d=30
h=9.1
d/2=30/2=15=r

v=(1/3)9.1pi15^2
v=(9.1/3)pi225
v=682.5pi
use 3.141592 to aprox pi
v=2144.13654
the closese is the first one
answer would be 2120 m³

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1 year ago

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vekshin1

<span>(2n + 2)(2n – 2)
= (2n)^2 -2^2
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3 0

2 years ago

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Select all the correct answers. Which sequences of transformations applied to shape I prove that shape I is similar to shape II?

MrRissso [65]

Answer:

I think your answer is b and c if not right sorry

Step-by-step explanation:

Hopefully this helps

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1 year ago

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saw5 [17]

Hello,

the answer is for sure A.

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