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charle [14.2K]
3 years ago
9

I’m lost on this question. Help???

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
6 0
This a triangle worth committing to memory The angles are 90-60-30 and the sides are in the ratio 2:sqrt3 : 1   where  1 is the shortest side opposite the 30 degree angle,

So  v : 16 = 1 : 2  giving v = 8

and  u : v = u : 8 =  sqrt3 : 1   giving u = 8 sqrt 3

Its a
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If the probability of surviving a head on car accident at 55 mph is 0.097, then what is the probability of not surviving
BabaBlast [244]

The probability of not surviving a head-on car accident is: 0.903

Step-by-step explanation:

The probabilities of occurrence and non-occurrence of an event add up to one.

If p is the probability that an even will happen and q is the probability that it will not happen

Then

p+q=1

Here,

Probability of surviving = p = 0.097

Probability of not surviving = q = ?

0.097 + q = 1\\q = 1 - 0.097\\q = 0.903

The probability of not surviving a head-on car accident is: 0.903

Keywords: Probability, Inverse

Learn more about probability at:

  • brainly.com/question/4460262
  • brainly.com/question/4464845

#LearnwithBrainly

5 0
3 years ago
At the U.S open tennis championship a statistician keeps track of every serve that a player hits during the tournament. The mean
GarryVolchara [31]

Answer:

Step-by-step explanation:

Both 115 and 145 mph are above the mean.  Draw a normal curve and mark these speeds.  115 mph is 1 standard deviation above the mean; 130 would be 2 standard deviations above the mean; and 145 would be 3 s. d. above it.

We need to find the area under the standard normal curve between 115 and 145.  This is equivalent to the area under the standard normal curve between z = 1 and z = 3.

I used my TI-83 Plus calculator's DISTR function "normalcdf(" to calculate this area:  normalcdf(1, 3) = 0.1573.

The area between z = 1 and z = 3 is 0.1573.  In other words, the percentage of serves that were between 115 and 145 mph was 15.73%.

8 0
3 years ago
10) On Tuesday Imani bought eight hats. On
SashulF [63]
34 I hope this helped!
6 0
3 years ago
Given: Circumscribed ABCD, AB=5,<br><br>AD=8, CD=10.<br><br> Find: BC
Lyrx [107]

Answer:

BC=7

Step-by-step explanation:

The circle can be circumscribed into the quadrilateral, if the sums of the opposite sides of the quadrilateral are eqaul.

Thus,

AB+CD=AD+BC,\\ \\8+BC=5+10,\\ \\BC=15-8=7.

5 0
3 years ago
If you break the illustration below into four groups of stars to smiley faces, what would be the ratio?
klio [65]

Answer:

A

Step-by-step explanation:

there are 3 stars to 1 smiley face

im sorry if I was wrong.

8 0
3 years ago
Read 2 more answers
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