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
lions [1.4K]
3 years ago
12

Simplify the expression. (8 + 7a) + 4 7a

Mathematics
1 answer:
agasfer [191]3 years ago
3 0
For this one I'm going to assume that 4 7a means 4 * 7a...

(8 + 7a) + 4 * 7a =
8 + 7a + 28a =
8 + 35a

If I read it wrong and 4 7a is actually 47a then...

(8 + 7a) + 47a =
8 + 54a =
2(4 + 27a)
You might be interested in
Set up a linear system and solve. A cash register contains $5 bills and $50 bills with a total value of $345. If there are 15 bi
victus00 [196]

Answer:

6 $50 bills and 9 $5 bills

Step-by-step explanation:

Let's let x = the number of $5 bills, and y = the number of $50 bills. With this, we can set up two equations:

5x + 50y = 345

x + y = 15

Because there is $345 total in the register, that means that 5 times the number of $5 bills plus 50 times the number of $50 bills would equal 345. And there are 15 bills total, so the numbers added is 15. Now, we can solve these equations through substitution:

x + y = 15

x = 15 - y

Now, plug in (15 - y) for x into the other equation, and solve for y:

5(15 - y) + 50y = 345

75 - 5 y + 50y = 345

75 + 45y = 345

45y = 270

y = 6

Since y is 6, that means we have 6 $50 bills. And there are 15 bills total, so there are 9 $5 bills. (15 - 6 = 9)

5 0
1 year ago
220-109.4 how to solve ?
anastassius [24]

Answer: 110.6

Step-by-step explanation: 220 - 109.4 = 110.6

7 0
3 years ago
Read 2 more answers
Can someone help. Write a word problem about equal groups and act it out to solve
Alona [7]

Answer:

HOPE THAT MAY HELP YOU :)

Step-by-step explanation:

Equal groups are illustrations of using the same variable.

A word problem that uses equal group is:  

Christopher traveled a distance of 5 miles yesterday; he traveled a distance of 4 miles earlier today. Calculate the total distance traveled  

The only condition for equal groups is that:  

The units or variable must be the same  

For instance:

Add 5 miles and 4 miles ----- This represents distance

Remove 2 liters from 7 liters --- This represents volume

Add 5 hours and quarter of an hour -- This represents time

And so on.

5 0
2 years ago
Help points and Awnser !!
Vsevolod [243]

Answer:

I say 20% but I may be wrong

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Sara bought a used car for $10,000. She learned from online that the value of a car depreciated 15% per year. What is the formul
Fudgin [204]

Answer:

Step-by-step explanation:

Value of Sam's car after t years =

==10000*(1-\frac{15}{100})^{t}\\\\=10000*(\frac{85}{100})^{t}\\\\=10000*(0.85)^{t}

Value of Sam's car in 5 years=

=10000*(0.85)^{5}\\\\=10000*0.4437\\\\

= $ 4437

4 0
3 years ago
Other questions:
  • QUICKLY!!!!!!!!!!!! A family has two cars. The first car has a fuel efficiency of 40 miles per gallon of gas and the second has
    10·2 answers
  • How do i rewrite an expression with a variable using the distributive property?
    15·1 answer
  • Find the sum: (3x^2 + 5x − 8) + (5x^2 − 13x − 5)
    7·2 answers
  • A regular hexagon with a perimeter of 54 in find the measure of each side of the polygon described
    15·2 answers
  • In this picture, find the value of X.
    8·1 answer
  • How do you do the bottom portion of this? It’s my younger sister’s homework . I’m a sophomore and have no idea how to do it!
    12·1 answer
  • Please I don’t know how to do this.. can anyone help?
    11·1 answer
  • Element X is a radioactive isotope such that every 12 years, its mass decreases by half.
    7·1 answer
  • Find the PERIMETER and AREA of each figure below
    13·1 answer
  • Solve this equation <br> 40 = 5(7 + x)
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!