All categories

3 years ago

-x + y = 1 -7x + 6y = -1 use substitution to solve

Mathematics

2 answers:

Nutka1998 [239]3 years ago

6 0

Answer:

(x,y)=(7,8)

Step-by-step explanation:

-x + y = 1

-7x + 6y = -1

x=-1+y

-7(-1+y)+6y=-1

7+(-7y)+6y=-1

-y=-8

y=8

x=-1+8

x=7

rusak2 [61]3 years ago

4 0

Answer:x=7, y= 8

Step-by-step explanation: y= x+1, put in 2nd equaiton to get, -7x + 6x+6 =- 1, -x = -7, x=7. -7+y=1 ,y=8

You might be interested in

What value of x makes the equation true?

Aleksandr [31]

♥ Answer: x=-6.9

Solve:
You need to Simplify both sides of the equation.
 $806.265=-116.85x$
Now: Flip the equation.
 $-116.85x=806.265$ 
Lastly Divide both sides by -116.85.
 $\frac{-116.85x}{-116.85} = \frac{806.265}{-116.85}$

Final answer: x=-6.9

6 0

4 years ago

18 is 40% of what number?

timofeeve [1]

18 is 40% of : 45
explanation
18/x = 40/100

5 0

3 years ago

Simplifying an Expression with the Numerator and the Denominator Raised to a Power

slamgirl [31]

Answer:

The answer to your question is the second option $\frac{1}{x^{48}y^{36}z^{6}}$

Step-by-step explanation:

Expression

$[\frac{(x^{2}y^{3})^{-2}}{(x^{6}y^{3}z)^{2}}]^{3}$

Process

1.- Divide the fraction in numerator and denominator

a) Numerator

[(x²y³)⁻²]³ = (x⁻⁴y⁻⁶)³ = x⁻¹²y⁻¹⁸

b) Denominator

[(x⁶y³z)²]²= (x¹²y⁶z²)³ = x³⁶y¹⁸z⁶

2.- Simplify like terms

a) x⁻¹²x⁻³⁶ = x⁻⁴⁸

b) y⁻¹⁸y⁻¹⁸= y⁻³⁶

c) z⁻⁶

3.- Write the fraction

$\frac{1}{x^{48}y^{36}z^{6}}$

6 0

3 years ago

6 1/4 as a mixed number

Debora [2.8K]

The correct answer would be 6 1/4 and as an improper fraction it would be 25/4

6 0

3 years ago

Read 2 more answers

*PLEASEEEEEE HELP* 12 in Area = ****ANSWER WITH JUST THE NUMBER/ DON'T INCLUDE "pi" or the "square inches"

Blababa [14]

Answer:

whats the question?

Step-by-step explanation:

7 0

3 years ago