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
r-ruslan [8.4K]
3 years ago
9

How to evaluate this expression -3 . (6 + 4 . 2)

Mathematics
1 answer:
lilavasa [31]3 years ago
4 0

Answer:

9

Step-by-step explanation:

All you have to do is follow this order while working a problem!

Example 1:

If a = 4 and b = 5, what is ab – 2b?

Since there are no parentheses or exponents,

you first plus in the values for a and b and multiply those together.

(4 ´ 5) You get 20.

Then, you multiply 2b or (2 ´  5 )which gives you 10.

Last, you subtract the second answer from the first (20 -10),

which gives you 10!

Example 2:

Evaluate 6x / 4 when x = 6.

Because multiplication and division are equal in the order of operations, you solve the problem by reading it from left to right like one would read a book.

6 x 6 = 36.

You then divide that number by 4.

The correct answer is 9.

(clip art was taken from http://www.kidsdomain.com/holiday/school/clip.html)

You might be interested in
16 more than s is at most −80.
polet [3.4K]

Answer:

s + 16 ≤ −80

Step-by-step explanation:

Analyze each part in the word equation:

"16 more than s"     s increased by 16; s + 16

"is at most"           is equal to or less than; ≤

"−80"               -80

Put the equation back together:

s + 16 ≤ −80

4 0
4 years ago
A cyclist travels 5.8 km in 30 minutes. <br> What is his average speed in km/h?
Sauron [17]

Answer:

11.6km/h

Step-by-step explanation:

multiply 30 min by 2 to get to an hour

multiply 5.8 by 2 to get to km per hour

4 0
3 years ago
Read 2 more answers
The sum of a whole number and twice its square is 21. Find the whole number
I am Lyosha [343]
SOLUTION:

Let whole number = x

x + 2x^2 = 21

2x^2 + x - 21 = 0

2x^2 + 7x - 6x - 21 = 0

x ( 2x + 7 ) - 3 ( 2x + 7 ) = 0

( 2x + 7 ) ( x - 3 ) = 0


2x + 7 = 0

2x = - 7

x = - 7 / 2

OR

x - 3 = 0

x = 3


ANSWER:

Therefore, as 3 is a whole number while - 7 / 2 isn't a whole number, the whole number must be 3.

Hope this helps! :)
Have a lovely day! <3
6 0
3 years ago
What is the solution of the equation (x-5)^2+3(x-5)+9=0 use u substitution and the quadratic formula to solve
Schach [20]

Answer:

fff

Step-by-step explanation:

ff

3 0
3 years ago
2) 9 lbs. of mixed nuts containing 55% peanuts were
Sonbull [250]

Answer:

<em>The new mixture is 49% peanuts.</em>

Step-by-step explanation:

The first batch of 9 lb of mixed nuts contains 55% peanuts. This means the quantity of peanut is:

9*55/100=4.95 lb

The second batch of 6 lb of mixed nuts contains 40% peanuts. This means the quantity of peanut is:

6*40/100=2.4 lb

The total quantity of peanut in the mix is

4.95 lb + 2.4 lb =7.35 lb

There are 9 lb + 6 lb = 15 lb of mix. Thus, the percent of peanut in the mix is:

7.35 / 15 * 100 = 49%

The new mixture is 49% peanuts.

6 0
3 years ago
Other questions:
  • Find the next number in the pattern given below<br><br> -10, -2, 6, ____
    11·2 answers
  • Six PS4 games cost $348. The cost of games varies directly with the number of games. Write a direct variation equation.
    15·1 answer
  • A crayon company sells a pack of wax crayons for $5. there are 10 crayons in each pack. what is the unit price of the crayons?
    13·2 answers
  • Plz help will mark brainlest
    5·1 answer
  • Evaluate 6(p-q)/(p-1) when p=13 and q=3
    14·1 answer
  • This is a timed quiz. Pls, help. 50 points. 6th-grade math.
    15·2 answers
  • WHAT IS THE ANSWER TO LIFE PLZ RIGHT ANSWER
    5·1 answer
  • AMONG US ANYONE? CODE : DATDKF
    8·1 answer
  • What is the b in equation y=2x+12
    5·2 answers
  • 21. Plot the numbers on the number line below. A.-5 1/2 B -6.3 C. -5.8 D. -6 7/10 E. -4.9 F. -6 9/10
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!