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Vilka [71]
2 years ago
14

What is the measure of the missing angle

Mathematics
2 answers:
Leni [432]2 years ago
6 0
The answer is 115 degrees because adding the two remote interior angles is the same as the one exterior angle .
Dmitrij [34]2 years ago
3 0

Answer:

115 degrees

Step-by-step explanation:

first find the missing angle in the triangle

75+40+x=180

x+115=180

x=65

That angle plus the ? angle form a straight line, meaning they add up to 180 degrees.

so 65+x=180

x=115

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Need this very badly ​
Fofino [41]
Can u show us how the location looks please?
7 0
3 years ago
For a medical study, a researcher wishes to select people in the middle 60% of the population based on blood pressure.
Finger [1]

Answer:

Lower limit: 113.28

Upper limit: 126.72

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 120, \sigma = 8

Middle 60%

So it goes from X when Z has a pvalue of 0.5 - 0.6/2 = 0.2 to X when Z has a pvalue of 0.5 + 0.6/2 = 0.8

Lower limit

X when Z has a pvalue of 0.20. So X when Z = -0.84

Z = \frac{X - \mu}{\sigma}

-0.84 = \frac{X - 120}{8}

X - 120 = -0.84*8

X = 113.28

Upper limit

X when Z has a pvalue of 0.80. So X when Z = 0.84

Z = \frac{X - \mu}{\sigma}

0.84 = \frac{X - 120}{8}

X - 120 = 0.84*8

X = 126.72

4 0
3 years ago
Use completing the square to solve x^2+6x=13
lara [203]

Answer:

x = -3 +/- square root(22)

Step-by-step explanation:

x = -b +/- square root(b^2 - 4ac) / 2a

ax^2 + bx + c = 0

these are both the quadratic formula but one is solved for the x and another for 0

a= 1

b= 6

c = -13

x= -6 +/- square root( 6^2 - 4(1)(13)) / 2(1)

x = -6 +/- sqrt( 36 + 52) / 2

x= -6 +/- sqrt (88) / 2

sqrt of 88 = 2 x sqrt (22)

divide 2 on each

x= -3 +/- sqrt (22)

8 0
2 years ago
WILL GIVE 11 POINTS How many solutions does the system have?
PSYCHO15rus [73]
There is one answer.  

The intersecting points are (0, 5) just for the extra if you graph them both.  
7 0
3 years ago
Help!!! ( look at picture)
eimsori [14]

Answer:

B

Step-by-step explanation:

The information on the graph is almost symmetrical, because the lines look almost the same length on both sides.

7 0
2 years ago
Read 2 more answers
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