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
melisa1 [442]
3 years ago
12

Solve each by elimination x+y =19 x - y = -7

Mathematics
2 answers:
Rudiy273 years ago
7 0
X + y = 19
x - y = -7
Subtract both
2y = 26, y = 13
Plug into first equation
x + 13 = 19
x = 6

Solution: x = 6, y = 13
goldenfox [79]3 years ago
5 0

Answer:

x = 6

y = 13

Step-by-step explanation:

x + y = 19

x - y = -7

To eliminate x, subtract ther second equation from the first

2y = 26

y = 13

To eliminate y, add the equations

2x = 12

x = 6

You might be interested in
it taken 12 days for 10 men assemble a machine how long could it take for 15 men to assemble the machine?​
fenix001 [56]
It will take 17 men to assemble a machine
8 0
2 years ago
Kabul’s bookshop marks up all books by 40 percent of their cost. The overhead rate is 16 percent of the selling price. What is t
morpeh [17]

Answer:

The net profit rate on the book is 5.41

Step-by-step explanation:

Given as :

The marks up percentage of book = m = 40%

The overhead rate is 16% of selling price

The cost price of book = c.p = $18.10

Let The profit = $p

Let The selling price = s.p

<u>Now, According to question</u>

mark up percentage = \dfrac{s.p - c.p}{c.p}

I.e 40% =  \dfrac{s.p - 18.10}{18.10}

Or, \dfrac{40}{100} + 1 = \dfrac{s.p}{18.10}

Or, \dfrac{140}{100} =  \dfrac{s.p}{18.10}

Or, s. p = \dfrac{140\times 18.10}{100}

∴ s.p = $25.34

So, selling price of book = s.p = $25.34

Now, The overhead percentage = 16%

i.e overhead rate = \dfrac{\textrm estimated cost}{\textrm estimated total base unit}

Or, estimated cost = 16% × 25.34

I,e estimated cost = 0.16 × 25.34

∴ estimated cost = $4.05

Now,

Profit = selling price of book - estimated book cost

I.e p = $25.34 - $4.05

∴ p = $21.29

So, The profit rate% = \dfrac{\textrm profit}{\textrm estimated cost}

I.e The profit rate% = \dfrac{21.29}{4.05}

∴ profit rate %= 5.41

So, The profit rate = p = 5.41

Hence, The net profit rate on the book is 5.41  Answer

4 0
3 years ago
A sports store has 468 golf balls. They will be put into boxes that hold 18 balls each. What is the minimum number of boxes need
Alona [7]
468/18 = 26

Therefore they need at least 26 boxes to hold all the golf balls.

Hope this helps :)
7 0
3 years ago
Read 2 more answers
Complete the table of inputs and outputs for the given function. F(x)= -5(x+7)
levacccp [35]

The table of inputs that satisfy the given function is (<em>-2, 25), (-1, -30), (0, 35), (1, -40) and (2, -45).</em>

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Given the function f(x) = -5(x + 7)

When x = -2; f(-2) = -5(-2 + 7) = -25

When x = -1; f(-1) = -5(-1 + 7) = -30

When x = 0; f(0) = -5(0 + 7) = -35

When x = 1; f(1) = -5(1 + 7) = -40

When x = 2; f(2) = -5(2 + 7) = -45

The table of inputs that satisfy the given function is (<em>-2, 25), (-1, -30), (0, 35), (1, -40) and (2, -45).</em>

<em />

Find out more on equation at: brainly.com/question/13763238

#SPJ1

6 0
1 year ago
What is the fifference between [-3] and -3
Morgarella [4.7K]
6, if I get it wrong them I'm sorry
5 0
2 years ago
Read 2 more answers
Other questions:
  • Which of these would not produce a representative sample that determines the favorite food
    13·2 answers
  • What does DYV (dive) stand for on ISTEP+ Math Part 1?
    10·1 answer
  • A sphere with radius r and a cylinder with radius r and a height of r are shown below. How do the surface areas of these solid f
    6·2 answers
  • Sarah said that when you multiply two fractions that are both less than 1, you may sometimes get a product equal to or greater t
    6·2 answers
  • The mass of the Eiffel tower is about 9.16 times 10^6 kilograms. The mass of the golden gate bridge is 8.05 times 10^8 kilograms
    10·1 answer
  • Sarah is creating a circle graph to summarize survey results. What percentage must section x represent?
    6·2 answers
  • I need help with this.​
    8·1 answer
  • Find the difference. Write your answer in scientific notation.
    6·2 answers
  • Write the following set in roster method:
    7·1 answer
  • Please help as soon as possible!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!