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2 years ago

All rectangles are quadrilaterals true or false Hurry

Mathematics

2 answers:

Inessa [10]2 years ago

8 0

It is true they both have 4 sides

Lorico [155]2 years ago

7 0

Answer:

Yes.

Step-by-step explanation:

A quadrilateral is any polygon with four sides. A rectangle, by definition, is a polygon with four sides and four right angles. Thus, every rectangle is a quadrilateral.

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What is the length side of a triangle that has vertices at (-5, -1), (-5, 5), and (3, -1)?

spayn [35]

Answer: 6,8 and 10

Step-by-step explanation:

To find the length , all we need to find is the distance between each point ,

the formula for calculating distance between two points is given by :

D = $\sqrt{(x_{2}-x_{1}) ^{2}+(y_{2}-y_{1}) ^{2}}$

Let the points be :

A ( -5,-1)

B(-5,5)

C(3,-1)

Calculating the length AB , we have

D1 = $\sqrt{(x_{2}-x_{1}) ^{2}+(y_{2}-y_{1}) ^{2}}$

D1 = $\sqrt{(-5+5)^{2}+(5+1)^{2}}$

D1 = $\sqrt{36}$

D1= 6

Calculating the length AC , we have

D2 = $\sqrt{(x_{2}-x_{1}) ^{2}+(y_{2}-y_{1}) ^{2}}$

D2 = $\sqrt{(3+5)^{2}+(-1+1)^{2}}$

D2 = $\sqrt{64}$

D2 = 8

Calculating the length BC , we have

D3 = $\sqrt{(x_{2}-x_{1}) ^{2}+(y_{2}-y_{1}) ^{2}}$

D3 = $\sqrt{(3+5)^{2}+(-1-5)^{2}}$

D3 = $\sqrt{100}$

D3 = 10

Therefore ,the length of the sides of the triangle are 6,8 and 10

3 0

2 years ago

What is the answer. please help

zubka84 [21]

Answer:

Exact Form:−2/3

Decimal Form:−0.666…

Step-by-step explanation:

6 0

1 year ago

Read 2 more answers

Which angle pairs are supplementary? Check all that apply.

Zina [86]

Answer:

Supplementary Angles are two angles the sum of whose measures is 180º. Supplementary angles can be placed so they form a linear pair (straight line), or they may be two separate angles.

7 0

2 years ago

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You buy 30of your favorite songs from a Web site that charges $0.97for each song. What is the cost of 30 songs?

ASHA 777 [7]

Answer:

the answer is 29.1

Step-by-step explanation:

do 30 * .97

4 0

2 years ago

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Oakland Middle School has 128 6th

adoni [48]

Answer:

36 teachers

Step-by-step explanation:

total students=128+121+135=384

groups of 32=384/8=12

teachers=12x3=36

8 0

1 year ago