jasssminne
jasssminne jasssminne
  • 12-06-2018
  • Mathematics
contestada

5x + 2y =20 when x =0.3?

Respuesta :

august1234 august1234
  • 12-06-2018
9.25 I think. Multiply 5 by .3 and subtract that from 20. Divide what you get from the subtraction by 2
Answer Link
Creati
Creati Creati
  • 12-06-2018
Hey there! :)

First, let's substitute x with 0.3, and multiply by 5

0.3 × 5 = 1.5

Here is your new equation:

1.5 + 2y = 20

Subtract 1.5 from 20

20 - 1.5 = 18.5

2y = 18.5

Divide both by 2

2y ÷ 2 = y
18.5 ÷ 2 = 9.25

y = 9.25

Hope this helps :)
Answer Link

Otras preguntas

how many solutions does this equation have ? -2(t-4)=10-2t
Once ca2+ binds to the ______________ receptor, _____________ leaves the sarcoplasmic reticulum. choose the single best answer.
If 50 students needs 84ml of acid how many 1 l bottles of acid needs to be ordered?
Which document gave slaves freedom in 1863?
The expression sin 2 theta/sin^2 theta is equivalent to
According to records from 50 years, there is a 2/3 chance of June temperatures being above 80 F. Azul needs to find the probability that it will be above 80 F f
What is the volume of a rectangular prism if the length is 12 and width 4
solve the equation 5( b+3) = b + 39
Find the outlier in the data set and tell how it affects the mean
Fill in the blank. Political parties organize people together to select candidates who most nearly ---------- a0 their goals and political desires.