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
Komok [63]
3 years ago
12

Determine whether quantities vary directly or inversely and find the constant of variation. A teacher grades 25 students essays

in 4 hours. Assuming he grades at the same speed, how long will it take him to grade 35 essays?
Mathematics
1 answer:
Lesechka [4]3 years ago
8 0
IDK the constant and quantities...
First, find how many hours it takes for him to grade 1 essay, 0.16. Then multiply that by 35 to get 5.6.
I hope this is right -_-'
You might be interested in
"Large Sample Proportion Problem. Surveys were conducted in multiple countries and respondents were asked if they felt political
melomori [17]

Answer: 0.0158

Step-by-step explanation:

Given : The data for the United States is that out of 1,000 sampled, 470 indicated yes, they felt political news was reported fairly.

According to the given information we have,

Sample size : n= 1000

Sample proportion: \hat{p}=\dfrac{470}{1000}=0.47

The standard error for proportion is given by :-

S.E.=\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

S.E.=\sqrt{\dfrac{0.47(1-0.47)}{1000}}

S.E.=\sqrt{0.0002491}

S.E.=0.0157829021412\approx0.0158

[Rounded to the nearest four decimal places.]

Hence, the standard error for the confidence interval = 0.0158

6 0
3 years ago
Translate each algebraic expression or equation into a verbal phrase 9y <br>​
rosijanka [135]

Answer: just multiply 9 and y together: 9 x y

5 0
3 years ago
Find the volume ( b= 10 cm , w= 12 cm , h= 12 cm ) A. 480 B. 144 C. 240 D. 1440
vova2212 [387]

Answer:

D.1440

Step-by-step explanation:

V=lxwxh

10x12x12

1440

8 0
3 years ago
Read 2 more answers
Help? Please jdjxjc
Zepler [3.9K]

Answer:

4

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
The sky ride at an amusement park spans 4 x 10 feet. Over the course of the day, Anna rode the sky ride 7 times. How many feet d
Furkat [3]
This question tells that the sky ride is a rectangle.
This means the perimeter or the total distance round the figure = 2L + 2B
= 2(4)+ 2(10)
=8+20
=28 feet
Anna rose 7 times
Distance rode= 7(28)
=196 feet
8 0
2 years ago
Other questions:
  • The smithsons are going to Dallas,TX on vacation. They have traveled 1/3 of the total distance. If they traveled 126 miles,how f
    7·1 answer
  • The angle of elevation to the top of the Empire State Building in New York is found to be 11 degrees from the ground at a distan
    13·2 answers
  • How many times does 12 go into 80 the times you have done 12 into 80 is when you count to 12 or 80 or do 80 or 12 jumping jacts
    14·1 answer
  • Rewrite 9+7=16 using the commutative law of addition
    15·2 answers
  • Which rotation will carry a regular hexagon onto itself?
    14·1 answer
  • Find all the zeros of the polynomial function p(x) = x3 – 5x2 + 33x – 29
    10·1 answer
  • What are the solutions to the quadratic equation 4(x + 2)2 = 36
    6·2 answers
  • What is 2000 + 20000=
    11·2 answers
  • Pls help extra points and mark brainlist
    13·1 answer
  • Whats x^2=1? I dunno it
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!