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
DerKrebs [107]
3 years ago
12

A set of wheels sold in an online auction for $1,120. This was $20 more than four times the opening bid. How much was the

Mathematics
2 answers:
Tanya [424]3 years ago
7 0

Answer: 7

Step-by-step explanation:

i wish i knew why

xenn [34]3 years ago
7 0
It would be 7 the answer
You might be interested in
Please answer asap...
Anon25 [30]

Answer:

The answer is B - 288

To get this answer all you need to do is

First, subtract 316 - 28 to get your answer :)

Hope this helps!

-sofia~

7 0
3 years ago
Read 2 more answers
Y=2x^2+12x+14 in vertex form
balandron [24]

Answer:

y = 2(x + 3)² - 4

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Using the method of completing the square

y = 2x² + 12x + 14 ← factor out 2 from the first 2 terms

  = 2(x² + 6x) + 14

To complete the square

add/subtract ( half the coefficient of the x- term)² to x² + 6x

y = 2(x² + 2(3)x + 9 - 9 ) + 14

  = 2(x + 3)² - 18 + 14

  = 2(x + 3)² - 4 ← in vertex form

4 0
3 years ago
If you borrow $100 at 50% interest, how much interest do you think you will have to pay?
Elena L [17]

Answer:

the answer is 50 dollars

Step-by-step explanation:

because your interest is only 50% so whats 100 divided into 2 its 50

6 0
3 years ago
Read 2 more answers
Find the value of x. please help me with my test
Lady bird [3.3K]

Step-by-step explanation:

180 -angled triangle,

180-56 = 124

124/2 = 62 (each corner of the right triangle)

then find the corner below

the rectangle has right angles on the right side

x = 90-62

= 28

8 0
2 years ago
1) If the alpha level is changed from α = .05 to α = .01, what happens to boundaries for the critical region?
Alexxandr [17]

Answer:

1) a. Move farther into the tails

2) a. Decreases

Step-by-step explanation:

Hello!

1)

Let's say for example that you are making a confidence interval for the mean, using the Z-distribution:

X[bar] ± Z_{1-\alpha /2} * \frac{Sigma}{\sqrt{n} }

Leaving all other terms constant, this are the Z-values for three different confidence levels:

90% Z_{0.95}= 1.648

95% Z_{0.975}= 1.965

99% Z_{0.995}= 2.586

Semiamplitude of the interval is

d= Z_{1-\alpha /2} * \frac{Sigma}{\sqrt{n} }

Then if you increase the confidence level, the value of Z increases and so does the semiamplitude and amplitude of the interval:

↑d= ↑Z_{1-\alpha /2} * \frac{Sigma}{\sqrt{n} }

They have a direct relationship.

So if you change α: 0.05 to α: 0.01, then the confidence level 1-α increases from 0.95 to 0.99, and the boundaries move farther into the tails.

2)

The significance level of a hypothesis test is the probability of committing a Type I error.

If you decrease the level from 5% to 1%, then logically, the probability decreases.

I hope this helps!

5 0
3 years ago
Other questions:
  • If a petition is filed against a child for truancy, this means that the child has committed what offense?
    8·1 answer
  • Can someone help with this math question
    14·1 answer
  • A colony of bacteria has 10,000 bacteria and is growing exponentially. The inequality 10,000(4x) ≥ 320,000 represents the hours,
    11·2 answers
  • Bella needs to read three chapters of her book. If she reads 3/5 of a chapter each night, how many nights will it take her to re
    5·2 answers
  • A pitcher contains 2/3 quart of lemonade if an equal amount of lemonade is poured into each of 6 glasses how much lemonade will
    5·1 answer
  • The probability that a student passes an examination is 2/5. If two students are picked at random from the class, what is the pr
    12·1 answer
  • Which equation represents a linear function?
    8·2 answers
  • Christian is training for a swimming competition He starts swimming 10 ft. from the shore to his boat The table below represents
    9·2 answers
  • X-intercept: (7.0)
    8·1 answer
  • In a certain year, 20% o RSM AMC 10 participants were invited to compete in American Invitational Mathematics Examination. How m
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!