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
oksano4ka [1.4K]
2 years ago
13

A person came to work at 8:30 am, went out at 11:45 am, had lunch, came in at 12:30 pm, and left at 5:15 pm. How many hours did

this person work?
Mathematics
1 answer:
Vlad1618 [11]2 years ago
8 0
Hello!

The person started working at 8:30 and stopped at 11:45 for lunch. That means that person worked 1 hour and 15 minutes before taking a lunch break.

The lunch break doesn't count because the person wasn't "working" then.

Next, this person worked from 12:30 to 5:15, which means they worked 4 hours and 45 minutes.

Add this up with the 1 hour and 15 minutes from before:

4 h 45 min + 1 h 15 min = 6 hours

This person worked a total of 6 hours.
You might be interested in
Pls help me answer my worksheet
bearhunter [10]
Step one know that across from 128 is 128 because of vertical angles
step two a straight line =180 so 128 -180 = 52
step three know you know 3k+4=52 so subtract 4 from 52 and that gives you 48 then divide by 3 to find k and 48/3 is 16
so k +16
because 16x3 is 48 then add 4 which is 52 and 52 plus 128 is 180
8 0
2 years ago
Can someone explain these to me?
s344n2d4d5 [400]

Answer:

Question 2: 4^12

Question 3: (9/64x)^11

Step-by-step explanation:

4 0
2 years ago
Indicate whether the following analysis involves a statistical test. If it does involve a statistical test, state the population
Pie

Answer:

a

Yes it  involves a statistical test

The population parameter(s) of interest is  

   The sample size is  n =  100

    The average reaction time of the right hands for the right-handed participants  \mu_R

    The average reaction time of the left hands for the left-handed participants   \mu_L

The null hypothesis is  H_o :  \mu_R = \mu_L,

The alternative hypothesis is H_a: \mu_R < \mu_L

b

Yes it  involves a statistical test

The population parameter(s) of interest is  

   The sample size is  n =  100

    The average reaction time of the right hands for the right-handed participants  \mu_R

    The average reaction time of the left hands for the left-handed participants   \mu_L

The null hypothesis is  H_o :  \mu_R = \mu_L,

The alternative hypothesis is H_a: \mu_R < \mu_L

c

Yes it  involves a statistical test

The population parameter(s) of interest is  

The percentage of people in the community living in a mobile home is denoted with  p

The sample size is  n =  1000

The null hypothesis is  H_o :  p =10\% = 0.01,

The alternative hypothesis is H_a: p >10\% =  0.01

Step-by-step explanation:

Considering the first statement

Testing 100 right-handed participants on the reaction time of their left and right hands to determine if there is evidence for the claim that the right hand reacts faster than the left.

Yes, the analysis does involve a statistical test.

The null hypothesis is  H_o :  \mu_R = \mu_L,

The alternative hypothesis is H_a: \mu_R < \mu_L

Here \mu_R is the average reaction time of the right hands for the right-handed participants

and  \mu_L is the average reaction time of the left hands for the left-handed participants

Considering third statement  

Polling 1000 people in a large community to determine if there is evidence for the claim that the percentage of people in the community living in a mobile home is greater then 10%.

The percentage of people in the community living in a mobile home is denoted with  p

The sample size is  n =  1000

The null hypothesis is  H_o :  p =10\% = 0.01,

The alternative hypothesis is H_a: p >10\% =  0.01

3 0
2 years ago
A system of equations is shown below:
JulijaS [17]
X+y=3

Subtract x from both sides

y=-x+3

Substitute

2x--x+3=6
2x+x+3=6
3x+3=6

Subtract 3 from both sides

3x=3

Divide both sides by 3

x=1
6 0
3 years ago
Baka barrows 3000 to buy a piano. the simple interest owned at the end of 2yrs is 540. what's the annual interest rate on bakas
Nuetrik [128]
The answer is A!!!!!
7 0
3 years ago
Other questions:
  • Solve for x. 1.1x + 1.2x - 5.4 = -10
    14·1 answer
  • Which equation below would be parallel to the line y-2x=8?
    8·1 answer
  • Solve the equation of exponential decay. The population of a city is expected to be 440,000 in 2020. This is a decline of 12% fr
    5·2 answers
  • A scale model of a house is 1 ft long. The actual house is 50 ft long. In the model, the window is 1 1/5 inches tall. How many f
    13·2 answers
  • How many solutions does the following equation have? 60z+50-97z=-37z+49
    6·1 answer
  • Helppppp n if do plz show work (idk wat to do)
    15·1 answer
  • Can someone help me understand this problem please I’ll give brainlyest
    15·1 answer
  • Yadira's mom is buying hot dogs and hot dog buns for the family barbecue. Hot dogs come in packs of 121212 and hot dog buns come
    6·2 answers
  • Enter the trigonometric equation you would use to solve for x. Do not solve the equation.
    8·1 answer
  • Jaime makes the following claim.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!