vammsgamingandvlogch vammsgamingandvlogch
  • 24-06-2020
  • Mathematics
contestada

If $5a+2b=0$ and $a$ is two less than $b$, what is $7b$?

Respuesta :

joaobezerra joaobezerra
  • 30-06-2020

Answer:

7b = 10

Step-by-step explanation:

We have that:

5a + 2b = 0

a is two less than b

So a = b - 2.

Replacing in the above equation:

[tex]5a + 2b = 0[/tex]

[tex]5(b - 2) + 2b = 0[/tex]

[tex]5b - 10 + 2b = 0[/tex]

[tex]7b = 10[/tex]

[tex]b = \frac{10}{7}[/tex]

7b

[tex]7b = 7\frac{10}{7} = \frac{70}{7} = 10[/tex]

7b = 10

Answer Link

Otras preguntas

what is the slope of the line 3x-4y=73x4y=7?​
how do you estimate the car
Alistar is going to build fence around the outside of his gardena) draw an accurate scale drawing of the garden using a ruler and compasses.use scale 1 cm to 2m
where do kid come from
Who is George Washington​
Ratio. Proportion and many method d) 15 workers were employed to complete a piece of work in 36 days. How many more workers should be added to complete the work
X 18. MODELING WITH MATHEMATICS The inequality 3x + 2y 2 93 represents the numbers x of multiple- choice questions and the numbers y of matching questions you
Help me plzzzzzy=__×+__​
- What is the use of border? Differentiate between changing color of cells and color of data class 6​
standardized menu recipes​