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djyliett [7]
3 years ago
7

The picture below shows a portion of a river dam:

Mathematics
2 answers:
NNADVOKAT [17]3 years ago
8 0
Hello,

If you are starting with the angle of 40 degrees, you have an adjacent side and hypotenuse. Therefore, it is a cosine relationship.

We can write:

cos(40) = adj / hyp
cos(40) = x / 220

To solve for x, simply multiply 220 by the cos(40).
You can write it as:  220 cos(40)

Good luck,
MrEQ

Contact [7]3 years ago
7 0

Answer:

220cos40

Step-by-step explanation:

cos40=x/220

(220)cos40=x/220(220)

220cos40=x

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julsineya [31]

Answer:

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Step-by-step explanation:

The square root of 121 is 11. There are no other solutions, I believe.

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4 3/10 - ( 2 2/5x+ 5 1/2) = 1/2(-3 3/5x + 1 1/5)
koban [17]

Answer:

x = -223/11 = -20.273

Step-by-step explanation:

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Step 2: Simplify 33/5

Step  3  :

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Step  4: Simplify: 1/2

Step  5  :  see below

Step  6  :  see below

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Step 8:  Simplify: 22/5

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7 0
3 years ago
7. The points P(2, -3), Q(3, -2) and R(8, z) are
Hatshy [7]

Answer:

z = 3

Step-by-step explanation:

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m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = P (2, - 3) and (x₂, y₂ ) = Q (3, - 2)

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m = \frac{z+2}{8-3} = \frac{z+2}{5} , then

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It is just a dark screen. Upload it again?
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