1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
antiseptic1488 [7]
2 years ago
11

Dolly is measuring the angles of a triangle. He measures the first two angles of a triangle and gets 30 and 100. How could he fi

nd the measure of the third angle?
Mathematics
2 answers:
Natalija [7]2 years ago
8 0

Answer:

the third angle is 50 degress

Step-by-step explanation:

the angle sum property states that the sum of all the interior angles of a triangle is 180.

therefore : 30 + 100 + x = 180

x = 180 - 130

x = 50

Nana76 [90]2 years ago
3 0
The third angle is 5p degrees
You might be interested in
What is the y-value of point A?
PSYCHO15rus [73]

Answer: 1

The full term is (6,1)

6 0
3 years ago
Read 2 more answers
A man places a mirror on the ground and sees the reflection of the top of a flagpole as shown in the figure below. The two trian
tigry1 [53]

Answer:

Step-by-step explanation:

B

5 0
3 years ago
According to an article in Newsweek, the natural ratio of girls to boys is 100:105. In China, the birth ratio is 100:114 (46.7%
mojhsa [17]

Answer:

z=\frac{0.42 -0.467}{\sqrt{\frac{0.467(1-0.467)}{150}}}=-1.154  

p_v =2*P(z  

So the p value obtained was a very high value and using the significance level given \alpha=0.05 we have p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the proportion of girls born is not significantly different from 0.467

Step-by-step explanation:

Data given and notation

n=150 represent the random sample taken

X=63 represent the number of girls born

\hat p=\frac{63}{150}=0.42 estimated proportion of girls born

p_o=0.467 is the value that we want to test

\alpha=0.05 represent the significance level

Confidence=95% or 0.95

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the true proportion if girls is 0.467.:  

Null hypothesis:p=0.467  

Alternative hypothesis:p \neq 0.467  

When we conduct a proportion test we need to use the z statistic, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

The One-Sample Proportion Test is used to assess whether a population proportion \hat p is significantly different from a hypothesized value p_o.

Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.42 -0.467}{\sqrt{\frac{0.467(1-0.467)}{150}}}=-1.154  

Statistical decision  

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

The significance level provided \alpha=0.05. The next step would be calculate the p value for this test.  

Since is a bilateral test the p value would be:  

p_v =2*P(z  

So the p value obtained was a very high value and using the significance level given \alpha=0.05 we have p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the proportion of girls born is not significantly different from 0.467

3 0
3 years ago
I WILL SELECT A BRAINIEST,LIKE AND GIVE 20 POINTS TO THE FIRST PERSON TO AWNSER MY QUESTIONS.
Cerrena [4.2K]
23.) 21 hrs at $ 11 per hr = (21 * 11) = 231....and u received 91% of ur wages...
       0.91 (231) = 210.21 
       fraction u got : 210.21 / 231 = 0.91 = 91/100 <== I am not 100% sure on 
       this. I might be making this harder then it looks....u r going to get 210.31 take home pay.....or 91% which in fraction form is 91/100

26B.  17/10 = 85/ x
          cross multiply
          17x = 850
          x = 850/17
          x = 50....50 liters of oil <==

26C. 12:9...added = 21

         12/21(4200) = 50400/21 = 2400 <== higher cost receives 2400
          9/21(4200) = 37800/21 = 1800


5 0
3 years ago
What is 449/60 as a mixed number
Ilia_Sergeevich [38]
\dfrac{449}{60}=\dfrac{300+120+29}{60}=\dfrac{300}{60}+\dfrac{120}{60}+\dfrac{29}{60}\\\\=5+2+\dfrac{29}{60}=\boxed{7\dfrac{29}{60}}
6 0
3 years ago
Other questions:
  • 5-2.1=? 5-2.17=? 5-2 7/8 solve make sure to re-check your self before answering or no forty points
    5·1 answer
  • Solve. 10x^2 = 6 + 9x10x 2 =6+9x10, x, start superscript, 2, end superscript, equals, 6, plus, 9, x Choose 1 answer: Choose 1 an
    8·2 answers
  • A Hiker Buys A 3-gallon Jug Of Water Before Going Camping . She Uses The Water To Fill Several 1-Quart Water Bottles . How Many
    14·2 answers
  • "Which shapes are topologically equivalent to Choice 2?
    14·1 answer
  • PLEASE CAN ANYONE HELP!!!
    12·2 answers
  • The pair of triangles below have two corresponding parts marked as congruent. What additional information is
    6·1 answer
  • Jerry bought 5 candy bars for $14.75. if the king size candy bar cost $3.75 and a regular size candy bar cost $1.75, how much of
    8·1 answer
  • Write the recurring decimal 0 32 . o as a fraction. You must show all your working
    10·1 answer
  • There are 12 servings in a box of cereal. Each day, Ryan eats 2 servings of cereal. What fraction of the full box of cereal has
    9·1 answer
  • Any help with this greatly appreciated.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!