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3 years ago

Theorem: A line parallel to one side of a triangle divides the other two proportionately.

Mathematics

1 answer:

Pepsi [2]3 years ago

3 0

Answer:

Step-by-step explanation:

C. BD= 20

Use similar triangles to write a proportion and then cross multiply to solve.

AE: AC = AD:AB

(ONCE YOU KNOW AB YOU CAN SUBTRACT AD FROM AB TO GET BD =20)

So, 15:40 = 12: AB=32. now 32-12 = 20 so BD = 20

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Brrunno [24]

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3 years ago

Determine the projection of w onto u.

irina [24]

Answer:

A.6.2i-4.2 j

Step-by-step explanation:

We are given that

$u=9i-6j$

$v=-3i-2j$

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The project of vector a on b

= $\frac{a\cdot b}{\mid b\mid^2}b$

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Using the formula

The projection of w on to u

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4 0

3 years ago

Read 2 more answers

Use this information for exercises 11-14.parents are older than their children.the ratio of a parent´sage to a child´s age chang

Shtirlitz [24]

I think 11 is yes, if the parent is 40 and the child is 20. (and they had kids when they were young) 12 is yes, if the parent is 30 and the child is 10. 13 is yes, if the parent is 60 and the child is 40. unlikely though, but who cares. 14 is no, the parent would have been really young when they gave birth to the child. like 10.

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3 years ago