grace072702 grace072702

06-02-2018
Mathematics

contestada

Solve the system of equations using the substitution method.
{
4x+5y=7
y=3x+9

Please help?

Respuesta :

WolfLover181957 WolfLover181957

10-02-2018

4x+5(3x+9)=7
4x+15x+45=7
19x+45=7
19x=-38
x=-2

Answer Link

Otras preguntas

To provide adequate control of diabetes, one of the best dietary recommendations would be to:.

Please help me on this I beg I really need help

A pyramid has a base area of 28 cm² and a height of 24. 9 cm. What is the volume of the pyramid? Enter your answer as a decimal in the box. Cm³.

6. Draw Conclusions Which invention or innovation do you think had the most important impact on daily life in U.S. cities? I need help with this question asap.

If you deposit $1,000 in an account that earns 5 percent per year (compounded monthly), what will the balance in the account be at the end of 5 years

The Conventions of a number of the States, having at the time of their adopting the Constitution, expressed a desire, in order to prevent. . . Abuse of its powe

how do you conduct a campaign to control smoking in the public place

River Corp's total assets at the end of last year were $415,000 and its net income was $32,750. What was its return on total assets

What is the first step in the following equation 3y - (-40) = 37

Please answer the question in the picture

good job