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
melomori [17]
3 years ago
5

Simplify 7y+7-8(y-7)

Mathematics
2 answers:
Salsk061 [2.6K]3 years ago
8 0

Answer:

-y + 63

Step-by-step explanation:

Let's start like by solving the order of operations, and then add our Y's:

7y + 7 + −8y + 56

Adding:

+63 - y

Simplifying:

-y + 63

Thus, our answer is -y + 63

Alex787 [66]3 years ago
5 0

Answer:

-y+63

Step-by-step explanation:

You need to distribute the -8 by multiplying it to y and -7 therefore making 7y+7-y+56. Then you subtract 7y by 8y and then add 7 with 56

As a result, you then get -y + 63

You might be interested in
You have 14 coins that are nickles and quarters that equals 2 dollars how do you solve using substitution?
sergejj [24]

Answer:

The question is incorrect but if half nickels and quarters exist then you could say the answer is 7.5 nickels and 6.5 quarters.

The problem:

14 coins that are either nickels are quarters

The total dollar amount of these coins is 2 dollars

Step-by-step explanation:

Let n be the number of nickels.

Let q be the number of quarters.

We are given that n+q=14 and that .05n+.25q=2.

I'm going to choose to solve the system by elimination.

Multiplying the first equation by .25 gives:

.25n+.25q=.25(14)

.25n+.25q=3.5

So let's line the equations up now:

.25n+.25q=3.5

.05n+.25q=2

---------------------If we subtract the equations, the variable q will be eliminated.                Thus, we will able to solve for the variable n.

.20n+0q=1.5

.20n=1.5

Dividing both sides by .2 gives:

n=7.5

If n=7.5 and n+q=14, then we have 7.5+q=14 by substitution property.

We can subtract 7.5 on both sides giving us:

q=14-7.5=6.5

We cannot have 7.5 nickels and 6.5 quarters but this satisfies the given information.

Check:

7.5+6.5=(7+6)+(.5+.5)=13+1=14

7.5(.05)+6.5(.25)=2

Now, the requested way which is by substitution:

Let n be the number of nickels.

Let q be the number of quarters.

We are given that n+q=14 and that .05n+.25q=2.

We can solve the first equation for either n or q and then substitute that into the other equation allowing us to solve for the other variable.

Let's solve for q by subtraction n on both sides:

q=14-n

We are going to replace q in the second equation with (14-n) giving us:

.05n+.25(14-n)=2

Distribute:

.05n+3.5-.25n=2

Combine like terms:

-0.2n+3.5=2

Subtract 3.5 on both sides:

-0.2n=-1.5

Divide both sides by -0.2:

n=7.5

Since q=14-n and n=7.5, then q=14-7.5=6.5 .

We are already check the solution above.

8 0
3 years ago
HI :) I NEED HELP PLEASE BEFORE 12 AM
lisov135 [29]
See, please, the solution for the task number 2.

8 0
3 years ago
In △BFD, m∠B = 34 ° and m∠FDC = 76°. What is m∠F and m∠FDB?
Paul [167]

Answer:

f=42

fdb=104

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
5) What expression represents the square of the binomial (-9 + 2i) in<br> simplest form?
Lerok [7]

Answer:

Step-by-step explanation:

that is the simplest form.

7 0
3 years ago
How does the suffix help you understand the meaning of announcement
sergeinik [125]
The suffix 'ment' belongs to nouns that denote an action. the word 'announce' means to declare or make something known. So the word 'announcement' is the action of declaring.
6 0
3 years ago
Other questions:
  • how do the corresponding terms compare in a pattern the has the rule "add 3"and a pattern that has the rule "add 9" ?
    7·2 answers
  • What is the remainder when you divide (5x^3+23x^2-x+53) / (x+5)
    12·2 answers
  • Devbra swims 80 laps each practice and Mike swims 75 laps each practice. They each practice 4 days a week. How many laps do they
    8·1 answer
  • Help! I don't get this, and if it is easy to you, this isn't my paper, it is my friends! &lt;3
    10·1 answer
  • In a normal distribution, what percentage of the data falls within 3 standard deviations of the mean?
    9·1 answer
  • PLEASEEEE HELPPP!!!!
    14·1 answer
  • Im having a hard time plss help
    6·2 answers
  • The area of a rectangle is represented by 3x^2 + 14x + 8. Factor the area to determine the dimensions of the rectangle.
    5·1 answer
  • What is the product of (9) (negative 9) (negative 1)?
    6·1 answer
  • PLEASE help me <br> this is a 45°-45°-90° triangle. <br> solve for a.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!