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2 years ago

Find the value of x, y, and z

Mathematics

1 answer:

sladkih [1.3K]2 years ago

5 0

Answer:

(x, y, z) = (7, 9, 90)

Step-by-step explanation:

The two acute angles between l1 and l2 are vertical, so congruent.

(9x -7) = 8x

x = 7 . . . . . . . . . add 7-8x

These are supplementary to the obtuse angle between those lines:

8(7) + (13y +7) = 180

13y = 117 . . . . subtract 63

y = 9 . . . . . . . divide by 13

The angle marked z is supplementary to the angle marked as a right angle.

z + 90 = 180

z = 90

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Given: △ACE, BD∥AE Prove: BA/CB=DE/CD Drag

gizmo_the_mogwai [7]

Answer:

Step-by-step explanation:

Angle 4 = angle 1 and angle 3 =angle 2 Corresponding angles for two parallel lines BD and AE

Triangle AED ||| BDE Angle angle congruent

... By compendo and dividendo

Thus proved

Since two lines are parallel we have corresponding angles equal and also

sides will be proportional in similar triangles

Using that and adjusting compendo and dividendo we get the desired result

6 0

2 years ago

Read 2 more answers

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1 year ago

Which is a composite number 81 61 71 41

Ne4ueva [31]

Answer:

Step-by-step explanation:

A composite number has factor more than just one and itself.

Factors of 81=

1, 3, 9, 27, 81

4 0

2 years ago

Find the values of x when y=1

kirill [66]

Answer:

$x=1+\sqrt{5}, 1-\sqrt{5}$

Step-by-step explanation:

$x^{2} -2x-4=0$
$(x-1)^{2} -1-4=0$
$(x-1)^{2} -5=0$
$(x-1)^{2} =5$
$x-1=\sqrt{5} ,-\sqrt{5}$
$x=1+\sqrt{5} , 1-\sqrt{5}$

FINAL ANSWER

$x=1+\sqrt{5} , 1-\sqrt{5}$

In Decimal Form (Rounded to 3 significant figures)

x≈-1.24, 3.24

6 0

3 years ago

Read 2 more answers

I really need help quick I’ve been working this out for 1 hour already

wolverine [178]

Answer:

Step-by-step explanation:

Hope this helps

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2 years ago