starca9tsotia3kholla starca9tsotia3kholla

15-03-2017
Mathematics

contestada

One number is 5 more than another number.three times the first plus twice the second number is 30.find the numbers

Respuesta :

charlottekrist charlottekrist

15-03-2017

x=first number
y=second number
x=y+5
3x+2y=30
3(y+5)+2y=30
3y+15+2y=30
5y+15=30
5y=30-15
5y=15
y=3
x=3+5
x=8

Answer Link

Otras preguntas

Choose the element described by the following electron configuration. 1s22s22p63s23p64s1

Write an equation of a line through the point (-5, 2) perpendicular to y=13x+2.

A galvanometer with a resistance of 40.0 ω deflects full scale at a current of 2.0 ma. what resistance should be used with this galvanometer in order to constru

Read below and find the verb that is incorrect. Change the verb to correct form Para el mejor vuelo tienes que hacer estas dos cosas: hay que te vistes cómoda y

These images where taken from satellite above western Brazil. Figure 1 shows a Brazilian forest in the year 2000. FIGURE 2 shows the same area in 2012 the light

Divide and round to the nearest hundredths place. 2.75 ÷ 6

Given the system of equations, what is the solution? x + 3y = 5 x - 3y = -1 {(-4, -3)} {(2, 1)} {(-2, 3)}

Find the intercepts for the graph of the equation given 4x-7y=28

The following lines are parallel. 2x + 2y = 4 and y = -x + 5 True False

Quadrilateral ABCD is a rectangle. The diagonals intersect at point E. If AE=4x−12 and DB=7x−18 , find x. PLEASE HELP THIS IS THE ONLY QUESTION I AM STUCK ON