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
Katen [24]
3 years ago
14

7. Evaluate the expression ab for a = 8 and b=5.

Mathematics
1 answer:
Neporo4naja [7]3 years ago
8 0

Answer:

40

Step-by-step explanation:

First, we must know that ab is the same as:

a × b

Now, since a is given as 8, we can substitute a with 8. This is shown below:

ab = 8 × b

Similarly, b is given as 5. So, we can substitute b with 5:

ab = 8 × 5

With this, we can now evaluate ab as shown below:

ab = 8 × 5

= 40

You might be interested in
Simplify.
Igoryamba

Answer:

8^{18}

Step-by-step explanation:

Using the rule of exponents

a^{m} ÷ a^{n} = a^{(m-n)} , then

8^{15} ÷ 8^{-3}

= 8^{(15-(-3))}

= 8^{(15+3)}

= 8^{18}

7 0
2 years ago
The sum of the least and greatest of three consecutive integers is 72. what are the three integers?
asambeis [7]
23+24+25  Add these integers to equal 72.
6 0
4 years ago
PLS HELP!!! THIS IS ALGEBRA 1
OLga [1]

Answer:

It's answer C, as in the numbers below goes below the dividing point

4 0
3 years ago
If 11 runners are participating in a race, how many different ways can there be first and second place runners?
MrRa [10]
Only <span>first and second place runners:
</span>11*10=110 ways

Hope that helped.
6 0
3 years ago
Enter the missing numbers in the boxes to complete the table of equivalent ratios of time to distance.
andre [41]
Answer:  Here is the complete table, with the filled in values:
______________________________________________________________
Time (h)    Distance (mi)
    3                2 
    9                6
   12                8
   18               12
___________________________________________________

Explanation:
___________________________________________________
Let us begin by obtaining the "?" value; that is, the "distance" (in "mi.") ;
         when the time (in "h") is "18" ; 
___________________________________________________

12/8 = 18/?  

Note: "12/8 = (12÷4) / (8÷4) = 3/2 ;

Rewrite:  3/2 = 18/? ;  cross-multiply:  3*? = 2 * 18 ; 
                                                                        3*? = 36 ;

                                                                      Divide each side by "3" ;
                                                                            The "?" = 36/3 = 12 ;

So, 12/8 = 18/12 ;

The value: "12" takes the place for the "?" in the table for "distance (in "mi.);
                              when the "time" (in "h") is "18".
__________________________________________________________
Now, let us obtain the "? " value for the "distance" (in "mi.");
                when the "time" (in "h") is:  "9" .

12/8 = 9/? ;  Solve for "?" ;

We know (see aforementioned) that "12/8 = 3/2" ; 

So, we can rewrite:  3/2 = 9/? ;  Solve for "?" ; 

Cross-multiply:  3* ? = 2* 9 ;    3* ? = 18 ;  
                                                           Divide each side by "3" ;
                                                    to  get:  "6" for the "?" value.

When the time (in "h") is "9", the distance (in "mi.") is "6" .
____________________________________________________
Now, to solve the final "?" value in the table given.

9/6 = ?/2 ;  Note:  We get the "6" from our "calculated value" (see above problem). 

9/6 = (9÷3) / (6÷3) = 3/2 ;  

So, we know that the "?" value is:  "3" .

Alternately:   9/6 = ?/2 ; 

Cross-multiply:  6*? = 2*9 ;   6 * ? = 18 ;  Divide each side by "6" ;
                                                               to find the value for the "?" ; 
                                                                    "?" = 18/6 = "3" .

When the "distance" (in "mi.") is:  "2" ;  the time (in "h") is:  "3" .
____________________________________________________
Here is the complete table—with all the values filled in:
____________________________________________________

<span>Time (h)    Distance (mi)
____________________________________________________
    3                2 
    9                6
   12                8
   18               12
____________________________________________________
</span>
6 0
4 years ago
Other questions:
  • Please answer number 3.
    13·1 answer
  • Help me plz --- questions are in screenshot
    15·1 answer
  • A tortoise is walking in the desert. it walks for 17.5 meters at a speed of 7meters per min
    10·1 answer
  • Someone please help me asap !!!!
    7·1 answer
  • Four families each brought the same number of chairs to a block party. Three more chairs are needed to seat all 27 people how ma
    13·1 answer
  • A ride sharing service charges $4.25 for every ride, plus $0.30 per mile. If m represents miles, which rule for p(m) models the
    14·1 answer
  • HELP NOW PLEASE!!!.​
    14·2 answers
  • Question 14 of 14
    11·1 answer
  • Simplify the expression (r^2*s)^5 <br> A. r^7*s^5<br> B. r^7*s^6<br> C. r^10*s^6<br> D. r^10*s^5
    9·1 answer
  • Hi please help me ANYONE CAN HELP ME????
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!