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8_murik_8 [283]
3 years ago
6

Please I need help with questions 3-5 and it’s very hard and I’m struggling with it and if you need to see the picture big then

click on it and it will be big

Mathematics
1 answer:
topjm [15]3 years ago
4 0
3.
m/_QOR + m/_ROS = 90 (because the two angels together make a right angle)

Substitute.

x + 5 + 2x + 7 = 90

3x + 12 = 90
-12 -12

subtract 12 from both sides

3x = 78

Divide each side by 3 to get x by itself

x = 26

4. those two angles in the picture are vertical, which means they're congruent.

with that in mind...the ray makes a right angle on one and the other, w, you dont know. so to get the whole angle you need to add both angles to get the whole thing so...

m/_w + 90 = 125

subtract 90 on both sides

m/_w = 35

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Which is equivalent to sin^-1(.75)
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<h2>Answer: 0.85 radians</h2>

Step-by-step explanation:

We have the following trigonometric expression:

sin^{-1}(0.75)=arcsin(0.75)

The result of this calculation is:

sin^{-1}(0.75)=48.59\° where the angle is in degrees

If 360\°=2\pi rad then:

48.59\°(\frac{2\pi rad}{360\°}=0.848 rad \approx 0.85 rad  

Therefore the answer is 0.85 radians

3 0
3 years ago
Dogs are inbred for such desirable characteristics as blue eye color, but an unfortunate by-product of such inbreeding can be th
Agata [3.3K]

Answer:

<h2>Option 2 is the right answer.</h2>

Step-by-step explanation:

We need to check if the two characteristics, <u>having blue eyes and being deaf are independent of each other or not</u>.

The above two characteristics will be independent if [Probability of being deaf with blue eyes] = {Probability of being deaf } {Probability of having blue eyes}

Now, the probability of having blue eyes is \frac{31}{100}.

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The probability of being deaf with blue eyes is \frac{31}{100} \times\frac{42}{100}.

Since, 38 is not equals to 42, the two characteristics are not independent.

3 0
3 years ago
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Step-by-step explanation: Isolate the vcariable by divding each side by factors that don't contain the variable.

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Hope this helps! :) ~Zane

3 0
3 years ago
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This one is more harder
dedylja [7]
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3 years ago
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5 0
3 years ago
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