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
sashaice [31]
3 years ago
5

Solve each system by substitution. y=-4x-9 y=3x+19

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
5 0

Answer:

x=-4, y=7

Step-by-step explanation:

According to the first equation, y = -4x - 9, so we can substitute y in the second equation for -4x - 9.

y = 3x + 19

-4x - 9 = 3x + 19

Add 9 to both sides

-4x = 3x + 28

Subtract 3x

-7x = 28

Divide by -7

x = -4

Plugging this into the equation, we have:

y = -4x - 9

y = -4(-4) - 9

y = 16 - 9

y = 7

You might be interested in
A rectangular prism with a volume of 4 cubic units is filled with cubes with side-lengths of 1/3 unit. How many 1/3 cubes does i
NeTakaya

Answer: 192 cubes

Step-by-step explanation:

You would divide 3 cubic units by 0.015625 cubic units

6 0
3 years ago
Read 2 more answers
Andre draws a tape diagram for 3÷2/3
bija089 [108]

Answer:

No I do not agree with Andre says that 3 divided by 2/3 Solving for 3 ÷ 2/3

3 ÷ 2/3

= 3 × 3/2

= 9/2

= 4 1/2

Therefore, 3 divided by 2/3 is 4 1/2

Andre's reasoning is wrong.

Step-by-step explanation:

It is incorrect

Let's divide and compare the sum

3 : 2/3 = 3*3/2 = 9/2 = 4 1/2

and

There are four 2/3 fractions and one 1/3 fraction

The 1/3 fraction is 1/2 of 2/3 fraction so instead of counting 1/3 as 1/3 it should be counted as 1/2

4 0
2 years ago
Simplify this expression: 16+28/2-6/10-4x2
almond37 [142]

Answer:

Your answer would be -4x^2+147/5



3 0
4 years ago
Laura is paying 1.07x including tax for a sweater that costs x before tax. Write this expression in another way to show the amou
ludmilkaskok [199]
Laura is paying 7% as tax.

1.07 is equal to 107%. To get the total price of something with tax you multiply it by 100% plus the tax. Simplify the percent to 1.07,

1.07x = x + 0.07x
8 0
3 years ago
The _______
Svetradugi [14.3K]

Answer:

  • The Range is the set of all outputs for a function
  • The Domain is the set of all inputs for a function

For example

  • f(x)=x+3

Here Domain and range both are set of all real numbers

6 0
3 years ago
Read 2 more answers
Other questions:
  • By what percent will the fraction change if its numerator is increased by 25% and its denominator is increased by 20%? please an
    15·1 answer
  • How do you solve and check it <br> -5 - 5y =0 <br> y=8x
    11·1 answer
  • How do you solve 102x37
    7·2 answers
  • The angle is less than 180 degrees, but more than 90 degrees.
    12·1 answer
  • Place in order from least to greatest.<br> 1/2, -(-3), -0.5, -2, -1
    9·1 answer
  • Y=-1/3x-3 how to graph
    5·2 answers
  • Find the Integer of -3
    11·1 answer
  • An architect is drawing up plans for a garden that has four equal sides, each Two-fifths yard long. What is the distance around
    7·1 answer
  • Change 7/8 as a fraction in simplest form
    6·1 answer
  • How do round a decimal of 2.25 into a whole number ??
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!