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Andrew [12]
3 years ago
14

In ΔJKL, the measure of ∠L=90°, LJ = 33 feet, and JK = 58 feet. Find the measure of ∠K to the nearest tenth of a degree.

Mathematics
1 answer:
Scilla [17]3 years ago
8 0

Answer:

∠K = 29.6°

Step-by-step explanation:

The diagram is shown below:

From the triangle, JK = 58 feet and LJ = 33 feet. ∠L = 90°.

So, the triangle ΔJKL is a right angled triangle.

Now, for the triangle ΔJKL, tan of the angle K is given as:

tan(K)=\frac{JL}{KL}=\frac{33}{58}

∴∠K = tan^{-1} (\frac{33}{58})=29.6°

So, the measure of angle K is ∠K = 29.6° to the nearest tenth of a degree.

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Daniel [21]

\frac{2400}{400}  = 6

each shirt costs $6

\frac{10 - 6}{6}  \times 100 = 66.6666....

The percent markup is about 66.7%

3 0
2 years ago
The Law and Order detectives enter a house at 11:30 am and found a man on the floor murdered. They take his body temperature fin
taurus [48]

Answer:

Time of murder = 10:39 am

Step-by-step explanation:

Let the equation of exponential function representing the final temperature of the body after time 't' is,

f(t) = a(e)^{nt}

Here, a = Initial temperature

n = Constant for the change in temperature

t = Duration

At 11:30 am temperature of the body was 91.8°F.

91.8 = 98.6(e)^{nt} --------(1)

Time to reach the body to the morgue = 12:30 pm

Duration to reach = 12:30 p.m. - 11:30 a.m.

                              = 1 hour

Therefore, equation will be,

84.4 = 91.8(e)^{n\times 1}

eⁿ = \frac{84.4}{91.8}

ln(eⁿ) = ln(0.9194)

n = -0.08403

From equation (1),

91.8 = 98.6(e)^{-0.08403t}

(e)^{0.08403t}=\frac{98.6}{91.8}

ln[(e)^{0.08403t}]=ln[\frac{98.6}{91.8}]

0.08403t = 0.07146

t = 0.85 hours

t ≈ 51 minutes

Therefore, murder was done 51 minutes before the detectives arrival.

Time of murder = 11:30 - 00:51

                          = 10:90 - 00:51

                          = 10:39 am

7 0
2 years ago
Evaluate the expression (2x + y) - z when x= 3, y = 4, z =5​
Lapatulllka [165]

Answer:

5

Step-by-step explanation:

(2x + y) - z

Let x=3  y=4 and z=5

2*3 +4 -5

Multiply and divide first

6 +4 -5

Then add and subtract

10-5

5

5 0
3 years ago
Can you please tell me how to solve this?
Sedaia [141]

The answer is 142°


Explanation:

angle 1 and angle 2 form are supplementary.

m∠1 + m∠2 = 180°

38° + m∠2 = 180°

m∠2 = 180° - 38°

m∠2 = 142°


Hope it helps!

5 0
3 years ago
Graph the linear equation y=×/3-4
shepuryov [24]
I think so that graph will help you...................................

5 0
3 years ago
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