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Mnenie [13.5K]
3 years ago
8

Kevin was asked to determine the length of side XZ. His work is shown. cos(34°) = (XZ)cos(34°) = 18 XZ =21.7 Which error did Kev

in make? He has the side lengths in the wrong place in the cosine ratio. He multiplied both sides by the length of XZ instead of dividing by XZ. He should have used the sine ratio. He should have used the tangent ratio.
Mathematics
2 answers:
Alika [10]3 years ago
8 0

Answer:

A

Step-by-step explanation:

jek_recluse [69]3 years ago
3 0

Answer:

He has the side lengths in the wrong place in the cosine ratio. (1st Answer on Edgen)

Step-by-step explanation:

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-- All three sides of a scalene triangle have different lengths.
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-- 'x' must be 10 or more in order to reach between the ends
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-- 'x' must be less than 40 in order for the 25 and the 15 to reach
between its ends. 

So the value of 'x' must satisfy these conditions:

<em>0 < x < 15</em>
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Any number that satisfies these conditions is an acceptable value for 'x'.


5 0
3 years ago
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kari74 [83]

Answer:

A. 1/2 of a goal

Step-by-step explanation:

Hello!

Given the options:

A. 1/2 of a goal

B. 3/4of a goal

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In a linear regression analysis the interpretation of the slope is:

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Given the variables

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To calculate the slope, you have to use the y-intercept and choose two pairs of (Y;X) values that correspond to a value on the line, for example (1;1.5) and (2;1.5).

You can calculate the slope as b= ΔY/ΔX

b= \frac{Y_2-Y_1}{X_2-X_1}= \frac{1.5-1}{1-0} = \frac{0.5}{1}= \frac{1}{2}

1st value (X₁;Y₁)= (0;1)

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I hope this helps!

4 0
3 years ago
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3 years ago
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Genrish500 [490]

Answer:

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Step-by-step explanation:

a. 20 - 9 + 8 -7

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or

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The minus sign is taken as common leaving the expression with the plus only.

It can be written in the same manner as above, adding the negative terms so that the expression is written as a sum.

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