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3 years ago

Calculate the length of line segment XY in each triangle.

Mathematics

1 answer:

coldgirl [10]3 years ago

5 0

Answer:

XY = 10 cm

Step-by-step explanation:

XY is a midsegment and is half the length of the 3rd side DE, that is

XY = $\frac{1}{2}$ DE = $\frac{1}{2}$ × 20 = 10 cm

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3 years ago

Answer these questions please: You don't need to plot the point just answer B & C. Also every single coordinate plane is lik

Nady [450]

Step-by-step explanation:

When moving left, subtract from the x-coordinate and when moving right, add in the x-coordinate. When moving down, subtract from the y-coordinate and when moving up, add in the y-coordinate.

1) Given point = (0, 0). 3 units right and 4 units down means (0+3, 0-4) = (3, -4).

2) Given point = (5, 2). 4 units left and 2 units down means (5-4, 2-2) = (1, 0).

3) Given point = (-6, -1). 8 units right and 5 units up means (-6+8, -1+5) = (2, 4).

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4 years ago

Liz is watching a film in the cinema the film started at 14:30 the film is 105 minutes long when the film ends liz takes 20 minu

jenyasd209 [6]

Answer:

Step-by-step explanation:

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3 years ago

What is the volume of a rectangular prism with length 90 cm, height of 70 cm, and the width of 40 cm?

sergij07 [2.7K]

Volume=Legnth times width times height
legnth=90
height=70
width=40
volume=90 times 40 times 70
volume=3600 times 70
volume=252000

answer is v=252,000 cm^3

6 0

3 years ago

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Two straight lengths of wire are placed on the ground, forming vertical angles. If the measure of one of the four angles formed

vitfil [10]

We have
angle 1= $72 degrees$

see the attached picture to better understand the problem

we know that
Vertical angles are congruent
 $angle1=angle3 \\ angle2=angle4$

and

adjacent angles are supplementary
 $angle2+angle1=180 \\ angle3+angle4=180$

if the measure of one of the angles is $72$ degrees and straight lines equal $180$ degrees you have to
subtract $72$ from $180$
so
$angle 2=180-72 \\ angle 2=108 degrees$

therefore
$angle 3=amgle 1 \\ angle 3=72 degrees$

$angle 4=amgle 2 \\ angle 4=108 degrees$

the answer is

the measures of the other three angles are
$108, 108 and 72 degrees$

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3 years ago

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