3 years ago

The answer please I don’t know it

Mathematics

1 answer:

leva [86]3 years ago

5 0

The answer is the first one because when adding fractions you add the numerator and then decimal.

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Can you add the measurments please

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3 years ago

Solve by completing the square n^2-3n+108=0

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(n -12)(n +3)= 0

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3 years ago

A bookmark is 3.7 centimeters wide and 6.2 centemeters tall. what is its area of the bookmark

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22.94

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4 years ago

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Afina-wow [57]

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3 years ago

cSuppose you are standing such that a 45-foot tree is directly between you and the sun. If you are standing 200 feet away from t

beks73 [17]

Answer:

you could stand at 5.0 ft and still be completely in the shadow of the tree

Step-by-step explanation:

From the diagram attached below;

We consider;

$\overline {BC}$ to be the height of the tree and $\overline {DE}$ to be the height of how tall you could be and still be completely in the shadow of the tree.

∠D = ∠B = 90°

Also;

ΔEAD = ΔBAC (similar triangles)

Therefore, their sides will also be proportional

i.e

$\dfrac{\overline {DE}}{ \overline {BC}}= \dfrac{\overline{AD}}{ \overline{AC}}$

$\dfrac{x}{ 45}= \dfrac{225-220}{225}$

$\dfrac{x}{ 45}= \dfrac{25}{225}$

By cross multiply

225x = 45 × 25

$x = \dfrac{45 \times 25}{225}$

$x = \dfrac{1125}{225}$

x = 5.0 ft

Therefore, you could stand at 5.0 ft and still be completely in the shadow of the tree

3 0

3 years ago