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
morpeh [17]
3 years ago
8

What is the justification for step 1 in the solution process?

Mathematics
2 answers:
andriy [413]3 years ago
7 0

Answer:

C.

the subtraction property of equality

Step-by-step explanation:

Given

8x + 15 = 11x + 2

Subtract 15 from both sides of the equation

8x + 15 - 15 = 11x + 2 - 15

8x = 11x - 13

noname [10]3 years ago
7 0

Answer:

the addition property of equality

Step-by-step explanation:

Compare step 1 with step 2 in the solution process:

step 1: -5x = -4x - 15

step 2: -x = -15

The variable was isolated on the left side of the equation by adding 4x to both sides. This is justified by the addition property of equality.

You might be interested in
6. Spiderman is three times as old as Superman.
anyanavicka [17]
Spider-Man 120
Superman 40
7 0
3 years ago
Read 2 more answers
On which of the following lines does the point (7, 1) lie?
stealth61 [152]
We have that
<span>the point (7, 1)

case </span><span>A.) y = 5x + 4
if the point </span>(7, 1) lie to the line
so
for x=7 the value of y must be  1
y=5*7+4------> y=39
39 is not 1---------> the point does not belong to the line

case <span>B.) y = -x + 8
</span>if the point (7, 1) lie to the line
so 
for x=7 the value of y must be  1
y=-7+8------> y=1--------> the point belongs to the line

case <span>C.) y = x - 10
</span>if the point (7, 1) lie to the line
so 
for x=7 the value of y must be  1
y=7-10------> y=-3
-3 is not 1---------> the point does not belong to the line

case <span>D.) y = -4x + 3
</span>if the point (7, 1) lie to the line
so 
for x=7 the value of y must be  1
y=-4*7+3------> y=-25
-25 is not 1---------> the point does not belong to the line

the answer is the option
 B.) y = -x + 8
6 0
3 years ago
The solution to a system of linear equations is (-3,-3) Which system of linear equations has this point as its solution? x -5y=-
Ann [662]

Answer:

x-5y=12 and 3x+2y=-15

Step-by-step explanation:

The first system is

x-5y=-12 and 3x+2y=-15

We substitute x=-3 and y=-3

-3-5*-3=12\ne-12 and 3*-3+2*-3=-15

Both equations are not satisfied

The next system is

x-5y=12 and 3x+2y=-15

We substitute x=-3 and y=-3

-3-5*-3=12 and 3*-3+2*-3=-15\ne15

Both equations are satisfied

The next system is

x-5y=-12 and 3x+2y=15

We substitute x=-3 and y=-3

-3-5*-3=12\ne12 and 3*-3+2*-3=-15

Both equations are not satisfied

The next system is

x-5y=12 and 3x+2y=15

We substitute x=-3 and y=-3

-3-5*-3=12\ne-12 and 3*-3+2*-3=-15

Both equations are  not satisfied

6 0
4 years ago
Differentiate. The answer is supposed to be -3/ sqrt 4-x^2
Margarita [4]

Answer:

Step-by-step explanation:

g(x)=\cos^{-1} (\frac{x}{2})\\g'(x)= \frac{- 1}{\sqrt{1-(\frac{x}{2})^2}}*\frac{1}{2} \\=\frac{-1}{\sqrt{4-x^2} }

6 0
4 years ago
PLEASE HURRY
Morgarella [4.7K]

Answer:

1,3, and 5 are the ones that have to be checked

4 0
3 years ago
Other questions:
  • What is the product of the polynomials below? (7x+7)(x+2)
    8·2 answers
  • What is grater 4/8 or 16/24?
    13·1 answer
  • A student throws a heavy ball downward off the top of a building with a speed of 18m/s. The ball reaches a speed of 41m/s just b
    10·1 answer
  • Fractor 32V - 72
    15·1 answer
  • The final scores of students in a graduate course are distributed normally with a mean of 72 and a standard deviation of 5. What
    12·1 answer
  • ASAP PLS Solve this exercise using the fact that the sum of the measures of the three angles of a triangle is 180°.In a​ triangl
    8·1 answer
  • -7.33 - 1.3n = -0.18<br> HELPPPPP!!!!
    12·2 answers
  • Help pls . Thank you very much
    12·2 answers
  • The drama club can wash 9 cars in 40 minutes.  At this rate, how many cars can they wash in 2 hours? Caution: turn hours to minu
    10·1 answer
  • Find the missing number so that the<br> equation has infinitely many solutions<br> x- 4 = -2(-x + 2)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!