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Mathematics

1 answer:

balandron [24]3 years ago

6 0

Answer:

what are we doing

Step-by-step explanation:

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Cuanto es la tercera parte de 39

KengaRu [80]

Answer:

Step-by-step explanation:

$39 \div 3 = 13$

7 0

3 years ago

Please Help, I keep getting the wrong answer every time. The length of a rectangle is twice its width. The perimeter is 60 ft. F

MrRissso [65]

Answer:

This is probably wrong. But i hope this helps anyways

Step-by-step explanation:

If the perimeter is twice its width, and the perimeter is 60. That means the whole length of the shape youre looking at is 120. (60•2) we can assume that this shape has 4 sides. 60/4. Thats 15. So the sides are 4 ft. The length is at the top and bottom is 15. 15•4 = 60. There ya go

7 0

3 years ago

In triangle ABC segment DE is parallel to the side AC . (The endpoints of segment DE lie on the sides AB and BC respectively). F

Sophie [7]

Answer:

The length of DE is 14 cm.

Step-by-step explanation:

Given in triangle ABC segment DE is parallel to the side AC . (The endpoints of segment DE lie on the sides AB and BC respectively). we have to find the length of DE.

Given lengths are AC=20cm, AB=17cm, and BD=11.9cm

In ΔBDE and ΔBAC

∠BDE=∠BAC (∵Corresponding angles)

∠BED=∠BCA (∵Corresponding angles)

By AA similarity rule, ΔBDE~ΔBAC

∴their corresponding sides are in proportion

⇒ $\frac{BE}{BC}=\frac{BD}{BA}=\frac{DE}{AC}$