tayzwilkins tayzwilkins
  • 08-11-2014
  • Mathematics
contestada

What is the value of x?
1. 6( -3 - x) - 2x = 14
x=

2. 2/7x + 6 + 17x = 18
x=

Respuesta :

RhysH
RhysH RhysH
  • 08-11-2014
1) expand the brackets 
6(-3 - x) - 2x = 14
-18 - 6x - 2x = 14
simplify
-18 - 8x = 14
then add 18 to both sides to get the x's on there own
-8x = 32
then divide by -8
x = 32/-8
x = -4

2) multiply everything by 7x
2 + (6 x 7x) + ( 17x × 7x) = 18 x 7x
2 + 42x + 119x^2 = 126x
put everything on one side
119x^2 - 84x + 2 = 0
then use quadratic equation to solve

x = 0.024671849 or 0.6812105039

 
Answer Link

Otras preguntas

how do you find the measure of m
Mrs. Bell has an interest rate of 4.175% on her house. Mr. Bentley has an interest rate of 4.25% on his house. Which explains who has the lower interest rate?
Help help help help please
Expressed in the correct number of significant figures the sum of 0.53 cm + 75.321 cm + 28.1 cm =
Name angle 2 in as many different ways as possible
True or false: to obtain the graph of f(x)=square root x+2 shift the graph of y=square root X horizontally to the right 2 units.
The difference between a number x and 17 is 21.
Can someone please help me I will give them brainliest if you had teeny tiny itsy bitsy hands could you hold on to a bond between two atoms in a molecule like y
Which group of people was brought to the Americas via the Middle Passage? A. English indentured servants B. African slaves C. unmarried English women D. in
1. One teacher wants to give each student 16/ 19 of a slice of pizza. If the teacherhas 16 slices of pizza, then how many students will she be able to hand out