sherazhussain43 sherazhussain43

24-02-2021
Mathematics

contestada

Solve to find the values of a and b.
4a + 7b = 38
9a + 7b = 68

Respuesta :

rayanneloh06 rayanneloh06

24-02-2021

4a + 7b = 38 -> (1)
9a + 7b = 68 -> (2)

Subtract (1) from (2),
9a - 4a + 7b - 7b = 68 - 38
5a = 30
a = 6

Answer Link

Otras preguntas

How do you simplify 11c + 3(-5c + 4d)?

determine the equation in the form y=mx+b for passing through each pair of points (0,8) and (4,3)

How do you solve (2x+y)*(y+4x) ?

the highest recorded temperature in the uk is 39° c. the lowest recorded temperature in the uk is - 27° c What is the difference between these two amounts?

use the order of operations to evaluate each expression. 4x4+3

i need help writing an equation from a graph

how did greece's geography discourage unity among the people

What is 12/16 in it's lowest term

The richest discovery in the history of mining occurred in 1873. This so-called "Big Bonanza" made _______ the richest man in the world

Saturn has a radius of 60,330,000 meters and a mass of 5.7 × 10^26 kilograms. Calculate the strength of its gravitational field.