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Andre45 [30]
3 years ago
11

In which figure is DE BC

Mathematics
1 answer:
stepan [7]3 years ago
4 0

Answer:

Given: DB = 7.2 cm, AE = 1.8 cm and EC = 5.4 cm and DE || BC.

DB

AD

=

AC

AE

[by basic proportionality theorem which states that if a line is drawn parallel to one side of a triangle the other two sides in distinct points, then the other two sides are divided in the same.

7.2

AD

=

5.4

1.8

AD=

5.4

7.2×1.8

AD=

10

24

⟹AD=2.4cm

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AlekseyPX

For this case we have the following functions:

f (x) = x ^ 2 + 5\\g (x) = 2x ^ 3-1

By definition of composition of functions we have:

(f / g) (x) = \frac {f (x)} {g (x)}

Then substituting:

f (-3) = (- 3) ^ 2 + 5 = 9 + 5 = 14\\g (-3) = 2 (-3) ^ 3-1 = 2 (-27) -1 = -54-1 = -55

So:

(f / g) (- 3) = \frac {14} {- 55} = - 0.25

Answer:

(f / g) (- 3) = \frac {14} {- 55} = - 0.25

7 0
3 years ago
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Answer:

4

Step-by-step explanation:

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---------

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If m \angle∠ 13 = 59°, find the measure of \angle∠ 8.
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cricket20 [7]

We need to evaluate the value of fraction \frac{j}{4}.

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In order to evaluate the value of fraction \frac{j}{4}, we need to plug j=12.

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On dividing 12 by 4 we get 3.

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3 0
3 years ago
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Slav-nsk [51]

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