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
jeka57 [31]
4 years ago
14

Adrian said that 21.8 × 1.9 equals 41.42. Is Adrian's answer reasonable?

Mathematics
1 answer:
oee [108]4 years ago
7 0
Yep! That answer is correct. 21.8 x 1.9 = 41.42
You might be interested in
Each person in a group of twenty people at a hotel orders one meal chosen from oatmeal, eggs, or pancakes and one hot beverage c
Paraphin [41]

Answer:

S = \{(Oatmeal, Coffee),(Eggs, Coffee),(Pancakes,Coffee), (Oatmeal, Tea),(Eggs, Tea),(Pancakes,Tea)\}

Step-by-step explanation:

Given

Meal = \{Oatmeal, Eggs, Pancakes\}

Beverage = \{Coffee, Tea\}

Required

Determine the sample space

The sample space is a list of combination of 1 meal and 1 beverage.

Because one individual can order only one of the meals and one of the beverages at any one time, then no two orders can be the same

The sample space (S) is as follows:

S = \{(Oatmeal, Coffee),(Eggs, Coffee),(Pancakes,Coffee), (Oatmeal, Tea),(Eggs, Tea),(Pancakes,Tea)\}

8 0
3 years ago
A diesel train traveled to the repair yards and
jek_recluse [69]

Answer:

B.  16 hrs

Step-by-step explanation:

Distance = rate × time

The best way to do this is to make a table with the info.  We are concerned with the trip There and the Return trip.  Set it up accordingly:

                    d     =     r     ×     t

There    

Return

The train made a trip from A to B and then back to A again, so the distances are both the same.  We don't know what the distance is, but it doesn't matter.  Just go with it for now.  It'll be important later.

               d     =     r     ×     t

There      d    

Return     d

We are also told the rates.  There is 70 km/hr and return is 80 km/hr

               d     =     r     ×     t

There      d     =    70

Return     d     =    80

All that's left is the time column now.  We don't know how long it took to get there or back, but if it took 2 hours longer to get There than on the Return, the Return trip took t and the There trip took t + 2:

                      d     =     r     ×     t

There             d     =    70   ×    t+2

Return            d     =    80   ×     t

The distances, remember, are the same for both trips, so that means that by the transitive property of equality, their equations can be set equal to each other:

70(t + 2) = 80t

70t + 140 = 80t

140 = 10t

14 = t

That t represents the Return trip's time.  Add 2 hours to it since the There trip's time is t+2.  So 14 + 2 = 16.  

B.  16 hours

8 0
3 years ago
Suppose that Drake works for a research institute in Greenland and is given the job of treating wild polar bears there for hypot
kvv77 [185]

Step-by-step explanation:

<em>Check the attached file for solution and </em>

<em>simulation screen shot</em>

R-Code:

Sample mean

sd = 60 Population Standard deviation

n = 10 Sample size

conf.level = 0.99 Confidence level

\alpha = 1-conf.level

z\star = \round(\qnorm(1-\alpha/2),2); z.\star

E = \round(z* \times \sigma/\sqrt(n),2); E

x= c(E,-E)

7 0
4 years ago
A certain company reported selling 5,000 toys during the month of January and expects sales to grow at a rate of 7.5% per month
Sergio [31]

Answer:

Answer is 36,220

Step-by-step explanation:

7 0
3 years ago
Determine the equation of a line that passes through A(2,5) and is parallel to the line defined by 3x−y+12=0. State the equation
Vinvika [58]

Answer:

Step-by-step explanation:

-y = -3x - 12

y = 3x + 12

y - 5 = 3(x - 2)

y - 5 = 3x - 6

y = 3x - 1

6 0
4 years ago
Other questions:
  • What is the range of the function f(x)=3/4 |x|-3
    12·2 answers
  • Whats the output of x + 6 of 3
    11·1 answer
  • PLEASE HELP
    14·2 answers
  • Denise built a storage shed. To cut the wood, she rented a large electric saw. The equation y = 15x + 12 represents the cost, y,
    10·2 answers
  • What happens to the value of the expression w-w as w increases?
    9·2 answers
  • All of the following are equal to 144,000 except:
    9·2 answers
  • PLZZ HELP!!!
    13·1 answer
  • Ariane borrows $200 on a 2−year loan. She is charged 5% simple interest per year. How much interest is she charged for 2 years?
    7·1 answer
  • A lamp post 15 feet high casts a shadow
    9·1 answer
  • Really need help with 11 and 12 just started learning this today and I don't quite understand it would really appreciate it
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!