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vladimir1956 [14]
3 years ago
7

Please help me on this I need to show work too

Mathematics
1 answer:
Genrish500 [490]3 years ago
3 0

Okay, so all you need to do is to find the missing angle.

First, remember that all the angles of a triangle equal 180°. So if you know two of the angles, all you have to do is add them, then subtract the sum from 180.

1. 78 + 37 = 115     180 - 115 = 65   Do the same thing for each triangle and your answers are.

1. 65°   2. 34°    3. 67°    4. 58°

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Please help! Quickly!
gavmur [86]
Its the second answer
3 0
3 years ago
Geometry
Sonbull [250]
Answer: 168 kilometers

Lakewood
| \
| \
|72\
| \
|_21_\
O’s home. Wildgrove

Wild grove to lakewood:
21^2 + 72^2 = x^2
441 + 5184 = x^2
5625 = x^2
75 = x

Home to Lakewood: 72
Lakewood to wildgrove: 75
Wildgrove to home: 21

72+75+21= 168 kilometers
3 0
3 years ago
Plz answer quick giving brainliest
dusya [7]
Simplify using FOIL 15x3+18x+10x2+12
7 0
3 years ago
Read 2 more answers
Andrea and Ashley are middle distance runner's for the schools traffic and FaceTime in the 500 m race are approximately normally
swat32

Answer:

0.006 is the probability that the record will be broken in next year.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 62 seconds

Standard Deviation, σ = 0.8 seconds

We are given that the distribution of face time is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

The record will be broken if the time is less than 60 seconds.

P(time is less than 60 seconds)

P(x < 60)

P( x < 60) = P( z < \displaystyle\frac{60 - 62}{0.8}) = P(z < -2.5)

Calculation the value from standard normal z table, we have,  

P(x < 60) =0.006 = 0.6\%

Thus, 0.006 is the probability that the record will be broken in next year.

6 0
3 years ago
If ARST = XYZ, which statement must be true?
Veseljchak [2.6K]

Answer:

The answer is B.

Step-by-step explanation:

That's because in A. angle S and angle Z aren't corresponding in the congruence of RST and XYZ.  

In C. line RS and line ST can' be proven to be congruent because they arent a part of the what we know which is RST is congruent to XYZ. It says nothing about RS being congruent to ST.

And D. has the same problem as A. with the line ST and line XZ not corresponding the what we know. If it had said ST is congruent to YZ, or that RT is congruent to XZ then it would be true. Because RST is congruent to XYZ. And R corresponds to X, S corresponds to Y, and T corresponds to Z.

So B. would be the answer because R and X correspond to one another because it's written as RST ans XYZ and both R and X are the first letters represented in both triangles.

3 0
3 years ago
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