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lubasha [3.4K]
3 years ago
10

1. Rectangles, parallelograms and kites have two sets of parallel lines.

Mathematics
2 answers:
Yuki888 [10]3 years ago
8 0

Answer:

True

Step-by-step explanation:

Anna11 [10]3 years ago
8 0

Answer:

true

Step-by-step explanation:

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Factor completely 169x2 − 64
kolezko [41]
Recognize the differnce of 2 perfect sqares
recall that a²-b²=(a-b)(a+b)
so

169x²-64=
(13x)²-(8)²=
(13x-8)(13x+8)
4 0
3 years ago
The probability of drawing two aces from a standard deck is 0.0059. We know this probability, but we don't know if the first car
vampirchik [111]

A standard deck of playing cards consists of 52 playing cards.

1. Count the probability of drawing two aces from a standard deck without replacment.

Among 52 playing cards are 4 aces, then the probability to select first ace is 4/52=1/13. After picking out first ace, only 3 aces left and in total 51 playing cards left, then the probability to select second ace is 3/51=1/17. Use the product rule to find the probability to select two aces without replacement:

\dfrac{1}{13}\cdot \dfrac{1}{17} =\dfrac{1}{221}\approx 0.0045.

2. Count the probability of drawing two aces from a standard deck with replacment.

Among 52 playing cards are 4 aces, then the probability to select first ace is 4/52=1/13. After picking out first ace, this card was returned back into the deck and the probability to select second ace is 4/52=1/13 too. Use the product rule to find the probability to select two aces with replacement:

\dfrac{1}{13}\cdot \dfrac{1}{13} =\dfrac{1}{169}\approx 0.0059.

3. If events A and B are independent, then Pr(A\cap B)=Pr(A)\cdot Pr(B).

All these three steps show you that the first card was replaced and events are independent.

7 0
4 years ago
Read 2 more answers
Sarah weighed three containers of sand for a science project. The first container weighed 19.28 grams, The second container weig
Pepsi [2]
1.72 grams it the amount the 3 container weighed more than the first and second combined
5 0
4 years ago
An equilateral triangle has a perimeter of 90 inches. Find the area of the equilateral triangle in simplest radical form.
KIM [24]

Answer:

450

Step-by-step explanation:

If the perimeter is 90 inches then each side must equal 30 inches. To find the area of a triangle you mulptiply the base by the height and divide by 2. The base is 30 and the height is 30. 30*30=900. 900/2=450.

6 0
3 years ago
Find the solutions to (x, y) y = -0.5x + 2 y = 0.5x + 6​
Marat540 [252]

Answer:

y=-0.5x+2 (-4,0) (0,2)   y=0.5x+6 (0,6)(12,0)

Step-by-step explanation:

Desmos

3 0
3 years ago
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