Mathematics, 28.04.2021 01:50, eggg65

When solving the following system of equations by substitution what would be a correct first step?

{x=y- 7 3x + 15y =- 1

A. 3x + 15 (y - 7) = - 1
B. 3(y – 7) + 15y = - 1
C. 3x + 15y (y - 7) = -1
D. 3x(y – 7) + 15y = -1

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 17:30, veheca

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

Answers: 1

continue

Mathematics, 21.06.2019 18:00, Gattuso

Manny bought 12 pounds of vegetables at the supermarket. 75% of the vegetables were on sale. how many pounds of vegetables were not on sale? 98 points : )

Answers: 2

continue

Mathematics, 21.06.2019 22:00, juniorracer148

For [tex]f(x) = 4x + 1[/tex] and (x) = [tex]g(x)= x^{2} -5,[/tex] find [tex](\frac{g}{f}) (x)[/tex]a. [tex]\frac{x^{2} - 5 }{4x +1 },x[/tex] ≠ [tex]-\frac{1}{4}[/tex]b. x[tex]\frac{4 x +1 }{x^{2} - 5}, x[/tex] ≠ ± [tex]\sqrt[]{5}[/tex]c. [tex]\frac{4x +1}{x^{2} -5}[/tex]d.[tex]\frac{x^{2} -5 }{4x + 1}[/tex]

Answers: 2

continue

Mathematics, 21.06.2019 22:30, jaydenrenee111902

The volume of the sun is approximately 1 × 10^18 cu km, while the volume of jupiter is approximately 1 × 10^15 cu km. which of the following is true? a. the volume of jupiter is approximately one thousand times the volume of the sun. b. the volume of jupiter is approximately one hundred times the volume of the sun. c. the volume of the sun is approximately one thousand times the volume of jupiter. d. the volume of the sun is approximately one hundred times the volume of jupiter.

Answers: 2

continue

Do you know the correct answer?

When solving the following system of equations by substitution what would be a correct first step?...