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Reptile [31]
3 years ago
8

Trigonometry please help! work need to be shown

Mathematics
1 answer:
Tpy6a [65]3 years ago
3 0

Given:

The figure of a right angle triangle.

To find:

The value of x to the nearest hundredth.

Solution:

In a right angle triangle,

\cos \theta=\dfrac{Base}{Hypotenuse}

Using the above trigonometric ratio for the given triangle, we get

\cos 46^\circ=\dfrac{x}{8}

0.6947=\dfrac{x}{8}

0.6947\times 8=x

5.5576=x

Approximate the value to the nearest hundredth.

x\approx 5.56

Therefore, the value of x is 5.56 units.

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Number 11. I need help!!!
Westkost [7]
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7 0
3 years ago
Which of the following uses the reciprocal property to rewrite {x}{5} = {72}{4}
____ [38]

Anw:

a

Step-by-step explanation:

72*4=5x

=288

5x=288

x=288/5

=57.6

x=57.6

57.6/72=0.8

4/5=0.8

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2 years ago
A graph of average resting heart rates is shown below. The average resting heart
kolbaska11 [484]

Step-by-step explanation:

its A 10-year-old has the same average resting heart rate as a 20-year-old

hope it helps!

5 0
2 years ago
Solve the system of equations:<br><br> -5x+y-4z=60<br> 2x+4y+3z=-12<br> 6x-3y-2x=-52
Bogdan [553]

Answer:

The answer to your question is:

x = -8; y = 1 ; z = -4

Step-by-step explanation:

Δ = \left[\begin{array}{ccc}-5&1&-4\\2&4&3\\6&-3&-2\end{array}\right]

  = 40 + 24 + 18 - (-4 + 45 - 96)

 = 82  + 55

 = 137

Δx = \left[\begin{array}{ccc}60&1&-4\\-12&4&3\\-52&-3&-2\end{array}\right]

= - 480 - 144 - 156 - ( 24 - 540 + 832)

= -780 -316

= - 1096

Δy = \left[\begin{array}{ccc}-5&1&-4\\2&4&3\\6&-3&-2\end{array}\right]

= 40 + 24 + 18 - ( - 4 + 45 - 96)

= 82 + 55

= 137

Δz = \left[\begin{array}{ccc}-5&1&60\\2&4&-12\\6&-3&-52\end{array}\right]

= 1040 - 360 - 72 - ( - 104 - 180 + 1440)

= 608 - 1156

= -548

x = -1096/ 137 = -8

y = 137 / 137 = 1

z = -548 / 137 = -4

6 0
3 years ago
Which is the value of this expression when j= -2 and k= -1?
UNO [17]

Answer:

-64

Step-by-step explanation:

I just simplify the like terms to make it easier visually. After that, I plugged in j and k and solve for the answer which is -64.

3 0
3 years ago
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