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Nookie1986 [14]

3 years ago

15

Alice wants to buy some paper towels. She has two options. She can either buy a package of four rolls or she can buy one roll no

w and buy another when she runs out. Which of these options is better? Give reasons for your answer.

1 answer:

mart [117]3 years ago

6 0

The 4 pack is better because it can save a trip back to the store

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Arturiano [62]

X^2 - xy + xy - Y^2
=
X^2 - Y^2

4 0

2 years ago

Use OZ with VWXY<br> What is XY ?<br><br> A 30<br> B. 35<br> C. 40<br> D. 50

valkas [14]

Answer:

Step-by-step explanation:

Chords having equal measures are equidistant from the center of the circle.

Since, VW = XY

Therefore, ZP = ZR = 15 units

A perpendicular line drawn from the center of a circle to the chord is the bisector of the chord.

VR = WR = 20 units

By applying Pythagoras theorem in ΔZRV,

ZV² = ZR² + VR²

ZV² = (15)² + (20)²

ZV = √(225 + 400)

ZV = √625

ZV = 25 units

Therefore, measure of radius ZV = 25 units.

VW = XY [Given]

Therefore, XY = 2(20)

= 40 units

4 0

3 years ago

1. Find the missing angle. 61 55 51

kaheart [24]

Answer:

193 degrees

Step-by-step explanation:

61 + 55 + 51 = 167

360 - 167 = 193

Your welcome!

Kayden Kohl

8th Grade Student

4 0

3 years ago

Read 2 more answers

Find the area of the regular octagon.

user100 [1]

Answer:

236.59mm²

Step-by-step explanation:

The formula for the area of a regular polygon is 1/2ap, with <em>a</em> being the apothem and <em>p</em> being the perimeter.

To start, get the perimeter by multiplying 7 (one side of the polygon) by 8 to get 56.

Next, we have to find the apothem (the perpendicular segment from the center of the polygon to one of the sides).

First, create a right triangle on an of the polygon's sides, where the hypotenuse is equal to the radius of the polygon, one of the legs is the apothem, and the other leg is equivalent to half of the side.

Next, using the polygon angle formula (n-2(360)/n), we can get the base angle of the triangle, 1/2(135), or 67.5.

We can use this angle and some trigonometry to find the the apothem.

First, use SOHCAHTOA to figure out if you will use sine, cosine, or tangent (in this case, tangent).

Next, set up an equation using the tangent of 67.5 to find the apothem - tan67.5 = a/3.

And set the equation equal to <em>a</em> (a = 3.5tan67.5).

Now that you have the apothem, plug it into the area formula to get A = 1/2(56)(3.5tan67.5) and solve!

(28)(3.5tan67.5)

(28)(8.4497)

236.59mm²

4 0

2 years ago

Is y=0.5x + 2 a linear function

Leno4ka [110]

To rephrase your question,

Does $y=0.5+2$ hold the form of $y=mx+n$ ?

The answer is <em>yes</em>.

Hope this helps.

Note:

Pedantic answer should be considered. In the above answer $y = \dots$ is not a function but rather an equation of a line.

3 0

2 years ago