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
AveGali [126]
3 years ago
9

Evaluate the expression 3.14(a2 + ab) when a = 4 and b = 3

Mathematics
1 answer:
barxatty [35]3 years ago
7 0

when a=4 and b=3,

3.14((4 x 2)+ (4 x 3)) = 3.14(8+12) = 3.14 x 20 = 62.8

You might be interested in
What is typically used to quantitatively compare the effectiveness of layouts? A. trial and error B. load-distance model C. expo
Andre45 [30]

Answer:

B. load-distance model

Step-by-step explanation:

A. trial and error

Trial and error is "a fundamental method of problem solving. It is characterised by repeated, varied attempts which are continued until success". But this method is not the best in order to compare effectiveness of layouts

B. load-distance model

The load-distance method is a "mathematical model used to evaluate locations based on proximity factors. The objective is to select a location that minimizes the total weighted loads moving into and out of the facility. The distance between two points is expressed by assigning the points to grid coordinates on a map". And that's the correct option since we are trying to measure the effectiveness of layouts quantitatively.

C. exponential smoothing

This is "a rule of thumb technique for smoothing time series data using the exponential window function". Wheighting observations using the exponential function. But this is a techinique used to smooth s time series not to compare effectiveness of layouts.

D.process control charts

The Control Chart is a "graph used to study how a process changes over time with data plotted in time order". But we don't want to see how the process changes the objective is quantitatively compare the effectiveness of layouts, and this one is not the best option for this.

E. mean absolute deviation (MAD)

The median absolute deviation(MAD) is "a robust measure of how spread out a set of data is. The variance and standard deviation are also measures of spread, but they are more affected by extremely high or extremely low values and non normality". But again is just a measure of spread and not allow to compare effectiveness of layouts.

8 0
3 years ago
Please help quickly !
GalinKa [24]

Answer:

1. multiplication property of equality

2. division  property of equality

Step-by-step explanation:

1. multplied by -3/2

2. divided by -2/3

8 0
3 years ago
Solve for x………………………
k0ka [10]

4×11+1=45

A+B+C=180 60+75+C=180 180_130=c c=45

4 0
2 years ago
HELP ME PLEASE.......
lesantik [10]
First and the fourth
8 0
3 years ago
Worth a lot of points
lara [203]

Answer: -2, 2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • A coordinate plane with a line passing through (negative 4, negative 4), (0, 0) and (4, 4).
    8·2 answers
  • You buy a basket of 24 strawberries. You eat them as you walk to the beach. It takes the same amount of time to walk each block.
    13·2 answers
  • What is the value of the expression below 1/25 divided by 74
    12·1 answer
  • Multiply. Write your answer as a fraction in simplest form.<br> −3/5 × 8/6=
    7·2 answers
  • You fill your car with gasoline at a service station for $2.75 per gallon. You pay with a $50 bill.
    13·1 answer
  • What is the answer to
    13·1 answer
  • Which of these variables could be investigated ONLY through observational studies?
    12·2 answers
  • PLEASE HELP!<br><br>THANK YOU!
    6·1 answer
  • In a parallelogram PQRS, if angle P = (2x+25) degrees and angle Q = (3x-5) degrees, then write the measures of angle S and angle
    11·1 answer
  • The______is the set of inputs For a fraction
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!