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
Oksi-84 [34.3K]
4 years ago
5

What is -2(a+b)= -2a - 2b

Mathematics
1 answer:
exis [7]4 years ago
7 0

Answer:

-2(a+b)=-2a-2b  

Equation is alway true

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    -2*(a+b)-(-2*a-2*b)=0  

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 (0 -  2 • (a + b)) -  (-2a - 2b)  = 0  

Step  2  :

Equation at the end of step  2  :

 0  = 0  

Step  3  :

Equations which are always true :

3.1    Solve   0  = 0This equation is a tautology (Something which is always true)

Equation is alway true

Step-by-step explanation:

You might be interested in
$7000 at 2% for 4 years.
jek_recluse [69]

Answer:

7577.02

Step-by-step explanation:

This would be the formula for that.

ia(1+.per)^{x}=y

ia is the Initial Amount, which is 7000

.per is the recent, in this case is .2

and finally x, which is the amount of years. this is 4

If you put this into a scientific calculator:   7000(1+.02)^{4} = y    you will get

7577.02

7 0
4 years ago
Given the literal equation for the area formula of a trapezoid: A =12h(b1 + b2) solve for b1. Must show your work to receive ful
vodka [1.7K]
Use photo math it is a app

3 0
3 years ago
A pile of 55 coins, consisting of nickels and dimes, is worth $3.90. find the number of each.
Lady_Fox [76]
Answer is: 32 nickels and 23 dimes.
<span>x - number of nickels .
y -number of dimes.
two equations in two unknowns:
1) x + y = 55
2) 0,05x + 0,1y = 3,90.
</span>nickel is a five-cent coin.
dime is a ten-cent coin.<span>
solve equation 1) for x and substitute for x in equation 2)
x = 55 - y
0,05</span>·(55 - y) + 0,1y = 3,90<span>2,75 - 0,05y + 0,1y = 3,90
0,05y = 1,15
y = 23.
x = 55 - 23 = 32.</span>
5 0
4 years ago
Read 2 more answers
25POINTS PLEASE HELP!!!!!!!!!!!
Lisa [10]

Step-by-step explanation:

it will be a because it have more

3 0
3 years ago
Find the value of x.<br> B<br> 6<br> 8<br> А<br> х<br> D<br> x = [?]
Keith_Richards [23]

Answer:

What's the question is that a good thing

5 0
3 years ago
Other questions:
  • Question 2 (Multiple Choice Worth 5 points)
    7·1 answer
  • How do you subtract and add integers
    13·1 answer
  • Express $91.60 for 8 lb of coffee as a unit rate
    8·1 answer
  • What is the mean average of 17,1,14,7,12,15​
    11·1 answer
  • #1 Determine if AB is tangent to the circle centered at point C. Explain your reasoning. * PLZ HELP
    6·1 answer
  • woodland Mound Park sells annual visitors passes for $12.50. Last year the park raised $53,500 in annual visitors pass sales. Ho
    13·1 answer
  • Find the coordinates of the midpoint of the segment given the endpoints p( -3,-7) and q (3, -5)
    12·1 answer
  • a nunber is multiplied by 2. then that product is multiplied by 5. write to explain how you know what digit is in the ones place
    15·1 answer
  • Sam takes a taxi in Chicago. The taxi charges $0.75 per mile and a flat fee of $1.60. If he has at most 10 dollars
    7·1 answer
  • An angle measures 58.6° less than the measure of its complementary angle. What is the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!