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DiKsa [7]
3 years ago
13

This is a quiz on special right triangles. please help me i cannot fail this. i will mark brainliest

Mathematics
1 answer:
kobusy [5.1K]3 years ago
4 0

Answer:

x=4

Step-by-step explanation:

Consider ΔKLJ:

sinθ=opposite/hypotenuse

sin30=LJ/8√2

LJ=0.5*8√2=4√2

Consider ΔMLJ:

sinθ=opp/hyp

sin45=x/4√2

1/√2=x/4√2

4√2/√2=x

x=4

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Kobotan [32]

Answer: I. only

--------------------------------------------------------------------------------------------------------------

Explanation :

II. False. a rectangle is a special type of rhombus since a rhombus has all sides equal, while a rectangle has all angles equal. A rhombus has opposite angles equal, while a rectangle has opposite sides equal.  The diagonals of a rhombus intersect at equal angles, while the diagonals of a rectangle are equal in length.

I.  True. A square is a special case of a rhombus, because it has four equal-length sides and goes above and beyond that to also have four right angles. Every square you see will be a rhombus, but not every rhombus you meet will be a square.

III. False.  Trapezoids have only one pair of parallel sides; parallelograms have two pairs of parallel sides. A trapezoid can never be a parallelogram. The correct answer is that all trapezoids are quadrilaterals.

4 0
3 years ago
Find the area of the figure. If needed, round to the nearest tenth.
Umnica [9.8K]

Answer:

18 \:ft^2

Step-by-step explanation:

The area of a trapezoid.

(a+b)h\frac{1}{2}

(8+4)3 \times \frac{1}{2}

(12)3 \times \frac{1}{2}

36 \times \frac{1}{2}

=18

6 0
3 years ago
Please help!!! I'm really confused.
olya-2409 [2.1K]

The value of root 10 is between 3 and 3.5

4 0
3 years ago
several friends each had 2/5 of a bag of peanuts left over from the baseball game. they realized that they could had bought two
kenny6666 [7]
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7 0
3 years ago
Can anyone give me the answer? I’ll give brainleist
creativ13 [48]

Answer: 22 i think

Step-by-step explanation:

add all sides together

8 0
3 years ago
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