sherazhussain43
sherazhussain43 sherazhussain43
  • 24-02-2021
  • Mathematics
contestada

Q5 Solve to find the values of a and b.
4a + 7b = 38
9a + 7b = 68​

Respuesta :

tutorAnne
tutorAnne tutorAnne
  • 01-03-2021

Answer: a= 6 ; b= 2

Step-by-step explanation:

Given

4a + 7b = 38---- equation 1

9a + 7b = 68​-----equation 2

we eliminate b by   subtracting equation i from 2 which gives us

5a =30

a = 30/5= 6

Puting the value of a -= 6 in equation 1

4a+7b= 38

= 4 x6 + 7b= 38

24+ 7b= 38

7b= 38-24

7b= 14

b= 14/7

b= 2

a= 6 ; b= 2

Answer Link

Otras preguntas

someone help...anyone
· Microorganisms prefer a dark, cold, moist environment to grow and reproduce, True or false
Which statement best explains how...
You are the systems administrator for a large trust company. Most of the Linux servers in the company host databases that are accessed frequently by company emp
it will 3.) Andy's Karpet Kleaning charges a $23 consultation fee, plus $17 per hour to clean carpets. Stanley Steemer charges a $37 consultation fee, plus $13
A hut in Tulum, Mexico 8 1/4 mi long. It has a width of 4/5 miles long, and 1/3 miles tall. Whatcis the volume of the hut
Colton has 888 comedy movies, 666 action movies, 555 fantasy movies, and 111 drama movie on his list of favorite movies. For every 555 movies on the list, there
The polynomial h(x) = (x+3)(x + 1)(x - 2)(.– 4) has the following zeros/roots:
help me please model the expression using counters 6+4 or model the expression using the number line.
........Help........... so yuhhh