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gtnhenbr [62]
3 years ago
14

What is the length of QR?

Mathematics
1 answer:
Elena L [17]3 years ago
7 0

Answer:

C

Step-by-step explanation:

Since the triangle is right with hypotenuse QR

Use Pythagoras' identity to solve for QR

The square on the hypotenuse is equal to the sum of the squares on the other two sides, that is

QR² = 8² + (8\sqrt{3} )²

       = 64 + 192

       = 256 ( take the square root of both sides )

QR = \sqrt{256} = 16

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5. While bird watching, Gabrielle saw 6 robins and 3 blue jays.
Semenov [28]

Answer:

Neither. They both saw the same amount of birds.

Step-by-step explanation:

Gabrielle saw 9 birds, but so did Chase. 6+3 is 9. 3+6 is also 9. The commutative property of addition states that a+b=b+a.

4 0
4 years ago
Three sides of a kite measure 8 inches, 10 inches, and 8 inches. What is the perimeter of the kite?
olganol [36]

Answer:

26

Step-by-step explanation:

8+10+8=26

3 0
3 years ago
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miv72 [106K]
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8 0
3 years ago
the diagram shows a door that has a window in it the front faces the door and window are similar rectangles that have the dimens
Vaselesa [24]

Answer:

<u>The correct answer is B. 150 cm.</u>

Correct statement, question and diagram:

The diagram shows a door that has a window in it. The front faces of the door and window  are similar rectangles that have the dimensions shown. What is <em>h, </em>the height of the window in centimeters?

A. 66 cm

B. 150 cm

C. 186 cm

D. Not here.

Source:

Question that can be found at quizizz

Step-by-step explanation:

Let's recall that if the door and the window in it are similar rectangles, then we have:

60/84 = h/210

84 * h = 210 * 60

84h = 12,600

h = 12,600/

h = 150 cm

<u>The correct answer is B. 150 cm.</u>

3 0
3 years ago
Read 2 more answers
What is the result of subtracting in the division problem shown below?
Elis [28]

Answer:

The answer is 9x² - 6x - 1

Step-by-step explanation:

∵ (6x³ + x² - 10x - 1) - (6x³ - 8x² - 4x) =

    0 + 9x² - 6x - 1 = 9x² - 6x - 1

7 0
3 years ago
Read 2 more answers
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