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
inna [77]
3 years ago
7

Help Help help help!!!!​

Mathematics
1 answer:
svet-max [94.6K]3 years ago
4 0

Answer:

A. \frac{1}{4}

Step-by-step explanation:

0.25 is 25/100 and that can further simply to 1/4.

You might be interested in
Where is the mistake​
Sphinxa [80]

Answer:

..

Step-by-step explanation:

..

5 0
3 years ago
What are the 3 central beliefs of Christianity
Nookie1986 [14]

Answer:

A. B. and D.

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Select the correct answer from each drop-down menu.
Xelga [282]

Answer:

a) Option A: r = 5

b) Option C: y = x

Step-by-step explanation:

a) First, we know that a circle centered at the origin of radius R is written as:

x^2 + y^2 = R^2

Then x^2+y^2=25 can be rewritten as:

x^2 + y^2 = 5^2

This is a circle of radius 5.

Then in polar form, this can be written as:

r = 5

b) Now we have the angle 225°

For rectangular coordinates (x, y)

The correspondent value of θ is given by:

Tan(θ) = y/x

In this case, we have θ = 225°

Then:

Tan(225°) = 1 = y/x

This can be rewritten as x = y

Then the correct option is C) y = x

6 0
3 years ago
What is the rvalue of the following data, to three decimal places?<br>​
Karolina [17]

Answer:

b

Step-by-step explanation:

8 0
3 years ago
A scrap metal dealer claims that the mean of his cash scales is "no more than $80," but an Internal Revenue Service agent believ
Zarrin [17]

Answer:

The p-value for this hypothesis test is P=0.015.

Step-by-step explanation:

In this case we have hypothesis test for the mean, with standard deviation of the population unknown.

The null hypothesis we want to test is

H_0: \mu\leq80

To work with this test we have a sample of size n=20, sample mean=91 and sample standard deviation=21.

First, we estimate the standard deviation of the population

s_M=s/\sqrt{n}=21/\sqrt{20}=4.696

Then, because we have an estimated standard deviation, we have to calculate the statistics t.

t=\frac{M-\mu}{s_M}=\frac{91-80}{4.696}  =2.342

We can look up this value of t in a t-table to know the probability of this value, taking into account 19 degrees of freedom:

df=n-1=20-1=19

The p-value or the probability of P(t>2.342) is 0.01511.

This value P=0.0151 is compared to the significance level (0.05). Since the probability value (0.0151) is less than the significance level (0.05) the effect is statistically significant. Since the effect is significant, the null hypothesis is rejected.

3 0
3 years ago
Other questions:
  • If you were to solve the system using the addition method, what would you multiply the first equation by in order to make the x'
    9·1 answer
  • A Real estate agent Earned a commission of $6875 for selling a house. If the selling price of the house? Step by step plz
    14·1 answer
  • Which equation is represented by the graph?
    12·1 answer
  • Describe the transformations.
    14·1 answer
  • What is the height of the building?<br><br> 33.9 m<br> 37.1 m<br> 36.8 m<br> 34.5 m
    11·1 answer
  • Fill in the blank: 47% Americans don’t have an
    5·2 answers
  • Julie is enjoying the pool and hot tub at her hotel. She likes jumping from the colt 65° pool into the hot 107° hot tub. What is
    15·1 answer
  • One layer of earth's atmosphere is called stratosphere
    12·1 answer
  • Classify the real numbers as rational or irrational numbers.
    13·1 answer
  • Dave has 25 3/4 feet of piping and needs to cut it in 1 1/2 foot measurements for a project. How many pieces of piping will he e
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!