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igor_vitrenko [27]
4 years ago
8

Which congruence theorems or postulates could be given as reasons why ABC =XYZ HELP !!!!

Mathematics
2 answers:
lara31 [8.8K]4 years ago
4 0
Answers: 
A) SAS
B) ASA
E) LL

============================================================

Explanation:

Let's go through each possible answer choice

A. We can use SAS because we know that AC = XZ (horizontal sides) is one pair of congruent sides, the angle pairing is C = Z, and the other pair of sides is BC = YZ (vertical sides)

B. We can also use ASA. Note how A = X is one pair of angles, AC = XZ is the middle pair of sides, and C = Z is the second pair of angles. The side is between the angles.

C. We can't use SSS as we don't know AB = XY is true or not. There are no tick marks indicating congruence.

D. We can't use LA here because we don't know the altitudes (LA = leg altitude)

E. We can use LL here because we have two right triangles. The two pairs of legs (AC = XZ and BC = YZ) are congruent based on the tickmarks.

F. We can't use HL similar to the reasoning for choice C. We don't know the hypotenuses are congruent or not. If we knew that AB = XY, then we could use HL (hypotenuse leg).


vladimir1956 [14]4 years ago
3 0

The right answeres are LL, LA, ASA, and SAS

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FWML is a parallelogram. Find the values of x and y. Solve for the value of z, if z=x−y.
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Opposite sides of a parallelogram are congruent so to find x:

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Therefore, z = x - y = 5 - 8 = -3.

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6 0
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70 POINTSS!!!! URGETT PLS HELP!! Vectors t = −5i + 2j, u = −3i + 7j, and v = 8i + 20j are given.
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The angle between the vectors t and u is 45°. And the vector t and vector w are orthogonal to each other.

<h3>What is a vector?</h3>

The quantity which has magnitude, direction and follows the law of vector addition is called a vector.

The vectors are given below.

t = −5i + 2j, u = −3i + 7j, and v = 8i + 20j

Part A: Then the angle between vectors t and u will be

\cos \theta = \dfrac{\overrightarrow{a} \cdot \overrightarrow{b}}{|\overrightarrow{a}| + |\overrightarrow{b}|}

Then we have

cos θ = [(−5i + 2j)(−3i + 7j)] / [√{(-5²) + 2²} + √{(-3)² + 7²}]

cos θ = 1 / √2

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Part B: c is a scalar

If \rm \overrightarrow{\rm v} = (a, b), then \rm c\overrightarrow{\rm v} = c(ca, cb)

Let c = 2, then we have

\overrightarrow{\rm w} = c\overrightarrow{v}\\\\\overrightarrow{\rm w} = (2*8, 2*20)\\\\\overrightarrow{\rm w} = (16, 40)

Part C: Use the dot product to determine if t and w are parallel or orthogonal.

\overrightarrow{\rm t} \cdot  \overrightarrow{\rm w} = (-5, 2)(16, 40)\\\\ \overrightarrow{\rm t} \cdot  \overrightarrow{\rm w} = -5*16+ 2*40\\\\ \overrightarrow{\rm t} \cdot  \overrightarrow{\rm w} = -80+ 80\\\\ \overrightarrow{\rm t} \cdot  \overrightarrow{\rm w} = 0

More about the vector link is given below.

brainly.com/question/13188123

#SPJ1

6 0
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