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
Nataliya [291]
3 years ago
12

Find the measure of the indicated aces and angles

Mathematics
1 answer:
Serggg [28]3 years ago
4 0

Answer:

a=21

b=69

c=42

d=138

Step-by-step explanation:

c is supplementary to d (which is 138), so c=180-138= 42.

angle b is on the edge of the central angle 138, so b is 1/2, therefore, b=69.

angle a is complementary to angle b because any triangle that includes the diameter is a right angle, so angle a=90-69=21.

You might be interested in
.........................................
tresset_1 [31]
$1.10/ 1 lb. the last one 6.60 ÷ 6
4 0
3 years ago
The mayor of a town has proposed a plan for the construction of a new community. A political study took a sample of 800 voters i
Hunter-Best [27]

Answer:

A political strategist wants to test the claim that the percentage of residents who favor construction is more than  30%, so then that represent our claim and needs to be on the alternative hypothesis.

Based on this the correct system of hypothesis are:

Null hypothesis: p \leq 0.3

Alternative hypothesis p >0.3

Step-by-step explanation:

We have the following info given from the problem:

n= 800 the random sample of voters selected from the town

\hat p = 0.34 represent the proportion of residents favored construction

p_o = 0.30 represent the value desired to test.

A political strategist wants to test the claim that the percentage of residents who favor construction is more than  30%, so then that represent our claim and needs to be on the alternative hypothesis.

Based on this the correct system of hypothesis are:

Null hypothesis: p \leq 0.3

Alternative hypothesis p >0.3

And in order to test this hypothesis we can use a one sample z test for a population proportion and the statistic would be given by:

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

And with the data given we have:

z=\frac{0.34 -0.3}{\sqrt{\frac{0.3(1-0.3)}{800}}}=2.469  

7 0
3 years ago
Quotient of 32 and -8
mestny [16]

Answer:

-4

Step-by-step explanation:

mark branliest :))

3 0
3 years ago
Read 2 more answers
You have a nickle and a number cube with numbers 1 - 6. How many possible outcomes would there be?
Vadim26 [7]

I believe that is 12

Very sorry if I am wrong

6 0
3 years ago
Assume the random variable x is normally distributed with mean μ = 80 and standard deviation σ = 4. Find the indicated probabili
Schach [20]

Answer:

0.2278

Step-by-step explanation:

z = (x-μ)/σ,

where x is the raw score

μ is the population mean

σ is the population standard deviation

z => 72 - 80/4

= -2

Probability value from Z-Table:

P(x ≤ 72) = P(x = 72) => P(x < 72)

0.02275

Approximately =>0.2278

6 0
3 years ago
Other questions:
  • Multiply 4x 1/2. And 1/2 x3/4. Also 3/4 x1/3. Please need help with this
    12·2 answers
  • 25-29 please with work
    5·1 answer
  • How do I do these questions?
    12·1 answer
  • How do I determine the number of solutions there are for this system of equations?2x+6y=5 x+3y=2
    7·1 answer
  • What expression is not equal to one fourth of 52?<br> a. 0.25×52b. 4% of 52c. 52÷4d. 52/4
    7·2 answers
  • A rectangular box has length 20cm, width 6cm and height 4cm. find how many cubes of size 2cm that will fit into the box.​
    15·1 answer
  • The cost of a concert ticket last week was $50.00. This week a concert ticket is $55.00. The percent increase of the ticket from
    7·1 answer
  • Need answer for number 13.<br> Tysm
    12·2 answers
  • Who's up for actually helping me with this?
    9·1 answer
  • HELP ASAP SHOW YOUR WORK AND EXPLAIN HOW YOU GOT YOUR ANSWER-NO LINKS OR JOKING AROUND
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!