LilBrookilyn4697 LilBrookilyn4697
  • 16-02-2019
  • Mathematics
contestada

The sum of 2 numbders are 21 the 2nd number is six times the first number work out the two numbers

Respuesta :

MrsStrong
MrsStrong MrsStrong
  • 19-02-2019

Answer:

3, 18

Step-by-step explanation:

To write an equation or an expression, define the variables.

x is the first number.

6x is the second number since it is 6 times the first.

Add the expressions together to 21 to solve.

x + 6x = 21

7x = 21

x=3

The first number is 3. The second is 6*3 = 18.

Answer Link

Otras preguntas

Scientists estimate that there may be up to ____________ species alive today. a. 30 billion b. 30 million c. 1.9 million d. 1.9 billion
What do chemists measure concentration with?
The interactive forces between particles are... A) less effective in solids than in liquids B) more effective in solids than in liquids C) equal to that of a ga
Not sure how to solve 2sinxcosx+cosx=0  Could you help?
What do chemists measure concentration with?
Which pair of rhombi are similar?
How much voltage would be necessary to generate 10 amps of current in a circuit that has 5 ohms of resistance?
The parts of a neuron include a. the cell body. b. one axon. c. numerous dendrites. d. all of the above
Why is it important for scientists to be able to remove DNA from an organism? List two reasons.
Which is an example of a predator-prey relationship? a. The relationship between a duck and a pond of water. b. The relationship between a lion and a zebra. c.