4 years ago

Find the distance across the lake. Assume the triangles are similar

1 answer:

Darya [45]4 years ago

6 0

Check the picture below.

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Lostsunrise [7]

Solution:

Given:

$2(10-a^2)+7a$

when a = 4, substitute for a in the expression;

$\begin{gathered} 2(10-a^2)+7a=2(10-4^2)+7(4) \\ =2(10-16)+28 \\ =2(-6)+28 \\ =-12+28 \\ =16 \end{gathered}$

Therefore, if (a = 4), then

$2(10-a^2)+7a=16$

Hence, the answer is 16.

6 0

1 year ago

VladimirAG [237]

Equating the formula (d is the diameter)

$\pi$ d^2/4 = 132.7
d^2 = 132.7*4/ $\pi$
d = $\sqrt{169.044586}$
d = 13.0017147331
d= 13cm

7 0

3 years ago

pashok25 [27]

Y=4 is the first one
x=-7 is the second one

5 0

3 years ago

Ket [755]

Answer:

1.7

Step-by-step explanation:

You can just use a calculator to make the work easier.

7 0

3 years ago

Sloan [31]

Answer:Alto 16cm Ancho 32cm

A+2A=48

3A=48

A=16

Step-by-step explanation:

7 0

3 years ago