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
solong [7]
3 years ago
12

Write an exptesion that can be used to multiply 6×198 mentally

Mathematics
1 answer:
Leni [432]3 years ago
5 0
Round 198 to 200, then do a mental sum for 6x200 (1200) then subtract 6x2(12) which gives you your answer: 1188
You might be interested in
. The selling price of 15 articles is Rs 1,500 at a gain of 8%. Find C.P of each article<br>​
Andru [333]

<u>Rs. 92.59</u> is each article's CP

Step-by-step Explanation:-

As per conditions given,

1500 \div 15 \div (1 + 8%)

=  > 100 \div 1.08

=  > approx. \: 92.59

Hence, the CP of each article is <u>Rs. 92.59</u>

3 0
2 years ago
Make n the subject of m= n² + 3
Andrej [43]

The n subject of m = n² + 3  is  n=\sqrt{m-3}

How is n made the subject of m = n² + 3 ?

m = n² + 3

n² = m- 3

n=\sqrt{m-3}

What does making n the subject mean?

  • To make n the subject of the formula or equation, we must rearrange the variables in the formula or equation to  have a single variable n that is equivalent to the other variables in the formula.
  • The equation is then rearranged such that each term containing n is placed on the same side of the equation.
  • If n appears in several words, factorization might be necessary.
  • Just one n needs to be displayed at the conclusion to make it the subject.
  • The result of square rooting a number or variable as an inverse operation may be positive or negative.

To learn more about making n the subject , refer:

brainly.com/question/625155

#SPJ9

7 0
1 year ago
I need the answer to this
adell [148]

Answer:

8 Hours

Step-by-step explanation:

Since 4 painters painting one house takes 14 hours, then one person would take 56 hours to paint the whole house. Hence, 4 x 14 = 56. If 7 people painted the house, then 8 hours would be needed since 56 / 7 = 8.

4 people x 14 hours = House

56 hours = House

56 hours is required to paint a house.

7 people x H hours=  House

7 people x H hours = 56

(7 people x H hours)/ 7 = 56 / 7

You divide 7 on both sides to isolate H on one side.

H hours = 8

So H = 8 which is the amount of hours needed.

I Hope This Helps :)

6 0
3 years ago
Find the widest range of scores that you can get on a final exam in order to receive a grade of B for the class. Using interval
Drupady [299]

Answer:

Correct choice is B

Step-by-step explanation:

Let x% be your final test score, then the average of all test scores is

\dfrac{96+77+74+x}{4}.

Since you must have an average between 80% and 89%, then

80\le \dfrac{96+77+74+x}{4}\le 89,\\ \\320\le 247+x\le 356,\\ \\73\le x\le 109.

X is measured in percent, then the greatest value of x can be 100%. You get that

73\%\le x\le 100%.

4 0
4 years ago
Read 2 more answers
Will is twice as old as Jill. Three years ago, Jill's age was two fifths of Will's age then. How old is each now?
dimulka [17.4K]
"Will is twice as old as Jill."

                       Jill's age . . . . .   J
                       Will's age . . . . 2J .

"Three years ago . . .

                       Jill's age then . . . . .   J - 3
                       Will's age then . . . . 2J - 3

". . . Jill's age then was 2/5 of Will's age then."

                                         J - 3  =  (2/5) (2J - 3)
Multiply
each side by  5 :          5J - 15  =  2 (2J - 3)

Divide
each side by  2 :          2.5 J - 7.5  =  2J - 3 

Subtract  2J
from each side:            0.5 J - 7.5  =      -3

Add  7.5
to each side:                0.5 J           =     4.5

Multiply
each side by  2 :                J            =       9

Jill is  9  y.o. now.
Will is 18 y.o. now.

4 0
3 years ago
Other questions:
  • A student is attempting to solve a multi-step equation. Sample mathematical work is shown below. Which statement best applies to
    11·1 answer
  • How much pay does john receive if he gives half of his pay to family,250 to his landlord and has exactly 3/7 of his pay left ove
    6·1 answer
  • A cube with 2 inch sides is placed on a cube with 3 inch sides. Then a cube with 1 inch sides is placed on the 2 inch cube. What
    14·1 answer
  • Expand (5a/3 -2b/5)^3
    13·2 answers
  • Help!
    6·1 answer
  • Razi’s Party Favor Bag Progress
    15·2 answers
  • Please help me understand how to solve this
    5·1 answer
  • Seven is more than 2 plus a number,q, can be shown by the inequality 2+q&lt;7. which causes for q make this a true statement.
    10·1 answer
  • What is 13/25 in decimal form​
    14·1 answer
  • Jada cuts a strip of paper into 5 equal parts. Each part is 7/5 inches long. How long was the strip of paper?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!