tammiet36 tammiet36

10-07-2020
Mathematics

contestada

Solve the equation -4x + 7 y equals 20. Y=3x+15

Respuesta :

10-07-2020

Substitue what y equals for y and solve.

[tex]

-4x+7(3x+15)=20 \\

-4x+27x+105=20 \\

23x=-85 \\

x=-\boxed{\frac{85}{23}}

[/tex]

Hope this helps.

Answer Link

Otras preguntas

The square of r increased by a quantity that is fifty times the cube of k

3g-9+11g-21 simlify the expression

1. rulers of the Holy Land 2. wars between Christians and Turks 3. symbol of the Crusades 4. organizations protecting traders 5. origin of fine spices and s

which Benchmark angles multiples of 30 degrees or 45 are closest to the rotation angles below?plz helpa.40b.140c.175d.220e.250f.310

7. The data selected to create a chart must include A. column titles and row labels. B. blank rows and columns. C. formulas. D. formatted cells.

Calculate the amount of heat (in kj) required to convert 74.6 g of water to steam at 100°c

Alex earns an allowance of $6 per week. He also received $35 as a birthday gift from his grandmother. How many weeks (w) will it take for Alex to save $110?

Given the point (2, 3) and the slope of 4, find y when x = 22. (1 point)

If a is a positive number, 400% of a is what percent of 400a?

A 7/16 inches bolt is used to a machine.what is the length of the bolt written as a decimal