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
Vaselesa [24]
3 years ago
13

Evaluate the expression 2ab3 + 6a3 - 4ab2 when a = 2 and b = 4.

Mathematics
2 answers:
evablogger [386]3 years ago
7 0
2(2)(4)3+6(2)3-4(2)(4)2
   48      +  36  -  64
          74         -  64
                 = 10 




nalin [4]3 years ago
3 0
2(2x4)3 + 6(2)3 - 4(2x4)2
 (4x8)3 + (12)3 - (8x16)2
  (32)3 + (12)3 - (128)2
        96 + 36 - 256
              -124
You might be interested in
A cube has a volume of 64 cubic cm. What is the measure of one side?
Cloud [144]

Answer:

4 inches

Step-by-step explanation:

The volume of a cube is given by

V = s^3 where s is the side length

64 = s^3

Take the cube root of each side

(64)^ 1/3  = (s^3) ^1/3

4 = s

5 0
3 years ago
When you run, your average step length is 42 inches. How many steps would you have to take to run 1 mile (5,280 feet)? Round to
bezimeni [28]
First convert 5,280 ft. into inches.
5280 \times 12 = 63360
5280 ft. equals 63360 inches.

Then you divide that by 42
63360 \div 42 = 1508.57
If you're rounding to the nearest step then it would take 1509 steps to run 1 mile.
6 0
3 years ago
Find the missing length indicated.<br> 18<br> ?<br> 4<br> 8<br> A) 21<br> C) 9<br> B) 3<br> D) 25
Reika [66]
I think the answer is 9
8 0
3 years ago
Match the following definition to the term.
Umnica [9.8K]
We are asked to describe into one term the definition "procedure for selecting sample elements from a total set of observations." The answer is sampling method. Sampling method is a method used by researchers to evaluate a large size of correspondents or samples such that the representive sample is still considered. 
3 0
3 years ago
In a teacher's math course, a linear regression line was calculated to predict
Marat540 [252]

The given equation is the best line that approximates the linear

relationship between the midterm score and the score in the final exam.

  • AJ's residual is 0.3, which is not among the given options, therefore, the correct option is. <u>E. None of these</u>.

Reasons:

The given linear regression line equation is; \hat y = 25.5 + 0.82·\mathbf{\hat x}

Where;

\hat y = Final exam score;

\hat x = The midterm score;

AJ score in the first test, \hat x = 90

AJ's actual score in the exam = 99

Required:

The value of AJ's residual

Solution:

By using the regression line equation, we have;

The predicted exam score, \hat y = 25.5 + 0.82 × 90 = 99.3

  • The residual score = Predicted score - Actual score

∴ AJ's residual = 99.3 - 99 = 0.3

AJ's residual = 0.3

Therefore, the correct option is option E;

  • <u>E. None of these</u>

Learn more about regression line equation here:

brainly.com/question/9339658

brainly.com/question/7361586

brainly.com/question/14747095

6 0
2 years ago
Other questions:
  • The measure of angle 1 is one fourth of the measure of angle 3, what is the measure of angle 1?
    8·1 answer
  • HELP PLEASE!!!!!!!!!!!
    13·1 answer
  • Here are two rectangles the two rectangles are similar and the scale factor is
    15·1 answer
  • Evaluate each expression for the given values of the variables. SHOW ALL WORK
    15·1 answer
  • Four times Audrey's age plus 7 is parag age. parag is 51. what is Audrey's age?
    6·2 answers
  • If f(x) = 3x + 7, find:<br> f(-2) = [ ? ]
    13·1 answer
  • Subtract -2/3- (-2/5)
    13·1 answer
  • 6(4-z)=2z what does z equal
    11·2 answers
  • Which expression is equivalent to 14 x 14?<br> 14²<br> 1414
    13·2 answers
  • Divide.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!