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2 years ago

13

The area of the small triangle is __ square units. I know this because . . .

1 answer:

Ainat [17]2 years ago

8 0

Answer:

ℝ ℝ ℍ

"0:35 ━❍──────── -5:32, ↻ ⊲ Ⅱ ⊳ ↺

VOLUME: ▁▂▃▄▅▆▇ 999%

Step-by-step explanation:

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prove that the quadrilateral whose vertices are the points A(-1,1), B(-3,4), C(1,5) and D(3,2) is a parallelogram.

Vsevolod [243]

Answer:

Since $\overrightarrow{AB} = \overrightarrow{DC}$ and $\overrightarrow{AD} = \overrightarrow{BC}$ , then the quadrilateral ABCD is a parallelogram.

Step-by-step explanation:

First, we label each point of the quadrilateral with the help of a graphing tool. If the quadrilateral ABCD is a parallelogram, then $\overrightarrow{AB} = \overrightarrow{DC}$ and $\overrightarrow{AD} = \overrightarrow{BC}$ . If we know that $A(x,y) =(-1, 1)$ , $B(x,y) =(-3,4)$ , $C(x,y) = (1,5)$ and $D(x,y) = (3,2)$ , then the measure of each vector is, respectively:

$\overrightarrow{AB} = (-3,4)-(-1,1)$

$\overrightarrow{AB} = (-2, 3)$

$\overrightarrow{DC} = (1,5)-(3,2)$

$\overrightarrow{DC} = ( -2,3)$

$\overrightarrow{AD} = (3,2)-(-1,1)$

$\overrightarrow{AD} = (4, 1)$

$\overrightarrow{BC} = (1,5)-(-3,4)$

$\overrightarrow{BC} = (4, 1)$

Since $\overrightarrow{AB} = \overrightarrow{DC}$ and $\overrightarrow{AD} = \overrightarrow{BC}$ , then the quadrilateral ABCD is a parallelogram.

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3 years ago

What is the density of the oak board

Andrei [34K]

We need more info or a pic

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1 year ago

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Jane bought an item for $40 that, after seeing it had a 20% discount. janes friend said the original price was $48. is she right

ale4655 [162]

Jane's friend is wrong, the original price would be $200

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2 years ago

Terrance ran 5/4 of a mile in 1/4 hour. How far would Terrance run in 1 hour ?

Brrunno [24]

Answer:

Terrance would run 20/4 of a mile or 5 miles

Step-by-step explanation:

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3 years ago

The cookies Karen wants come in packs of 8 she needs 46 of these cookies for a party how many packs should she buy?

Andre45 [30]

46/8=5.75

Round up to 6, since you can't buy 3/4 of a pack of cookies.

The answer is 6 packs of cookies.

Hope this helps :)

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2 years ago

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