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Natali [406]
3 years ago
7

Evaluate the expression when y equals 4. 5 + y + 8​

Mathematics
1 answer:
Trava [24]3 years ago
8 0

Answer:

5+y+8 would equal 17 if y=4

Step-by-step explanation:

If y=4 then that would make the expression 5+4+8 which equals 17.

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An observer in tower A sees a boat 1538 yd away at an angle of depression of 35°. To the nearest yard, how far is the boat away
Thepotemich [5.8K]
From my own solution, my answer is closest to D<span>. 1951 yd; 27°
</span><span>
The boat is 1951 yards away from the observer in tower B. The angle of depression to the boat from Tower B is 27</span>°.<span>

Pls. see my attachment. 

In it I divided the big triangle into two small right triangles. 
I solved for the common leg of the right triangles by using sin theta formula. sin </span>θ = opposite / hypotenuse
<span>
sin 35</span>° = opposite / 1538 yd
<span>sin 35</span>° * 1538 yd = opposite
<span>882.16 yd = opposite

From there, I used the Pythagorean theorem to solve for the missing side which is part of the 3,000 yd measure.

I got the measure of 1,259.86 yards. The remaining measure of 1,740.14 is the side of the other right triangle. 

Still using Pythagorean Theorem, I used the measurement of the known side of the 2nd right triangle to solve for its hypotenuse which was 1,950.97 or 1,951 yards.

With regards to the angle of depression, I used this formula:

tan(y) = opposite / adjacent
tan(y) = 1538 yd / 3000 yd
tan(y) = 0.513
y = 0.513/tan
y = 27.14</span>°<span>

</span>

8 0
3 years ago
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saul85 [17]
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7 0
3 years ago
The sum of 8 and joses score is 35 use the variable j yo represent josés score​
OLEGan [10]

Answer:

8 + j = 35

subtract 8 from both sides

j = 27

Step-by-step explanation:

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22 i think the right answer
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Round 893.38 to the nearest tenth
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The answer would be 893.4
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