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poizon [28]
3 years ago
5

What are the zeros of x (3 - 18x) = 0 ?

Mathematics
1 answer:
tresset_1 [31]3 years ago
6 0

Answer:

x=3⋅±  2

​  

=±4.2426

x=0

Step-by-step explanation:

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Brut [27]

Answer:28

Step-by-step explanation:

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3 0
2 years ago
3 years ago a father was 3 times as old as his son, in five years time he will be twice as old as his son, what will be the sum
ivolga24 [154]

Answer: 46 years

Step-by-step explanation:

Let the father's age be x and the son's age be y, then 3 years ago:

Father = x - 3

son     = y - 3

Then , from the first statement :

x - 3 = 3 ( y - 3 )

x - 3 = 3y - 9

x     = 3y - 9 + 3

x     = 3y - 6 .......................................... equation 1

In five years time

father = x + 5

son = y + 5

Then , from the second statement

x + 5 = 2 ( y + 5 )

x + 5 = 2y + 10

x       = 2y + 10 - 5

x       = 2y + 5 ........................ equation 2

Equating equation 1 and 2 , we have

3y -6 = 2y + 5

add 6 to both sides

3y = 2y + 5 + 6

subtract 2y from both sides

3y - 2y = 11

y = 11

substitute y = 11 into equation 1 to find the value of x

x = 3y - 6

x = 3(11) - 6

x = 33 - 6

x = 27

This means that the father is presently 27 years and the son is presently 11 years.

In four years time

father = 27 + 4 = 31

son = 11 + 4      = 15

sum of their ages in four years time will be

31 + 15 = 46 years

5 0
3 years ago
Read 2 more answers
6x + -2y² + 4xy² + 3x² + 5xy² simplify it​
r-ruslan [8.4K]

\large\displaystyle\text{$\begin{gathered}\sf 6x+-2y^{2}+4xy^{2}+3x^{2} +5xy^{2}    \end{gathered}$}

\large\displaystyle\text{$\begin{gathered}\sf Group\:like\:terms \end{gathered}$}

\large\displaystyle\text{$\begin{gathered}\sf =3x^2+6x-2y^2+4xy^2+5xy^2 \end{gathered}$}

\large\displaystyle\text{$\begin{gathered}\sf Sum\:similar\:elements:\:4xy^2+5xy^2=9xy^2 \end{gathered}$}

\boxed{\large\displaystyle\text{$\begin{gathered}\sf 3x^2+6x-2y^2+9xy^2 \end{gathered}$} }

7 0
2 years ago
Read 2 more answers
Can someone plss help mee ??
Dvinal [7]
First - 8
second - 4
third - 12
fourth - 9
3 0
3 years ago
I need help with this i can’t graph
zaharov [31]

Answer:

(-2,-5), (0,-4), (3,5) (1,1)

Solution:

Only (0,-4) is on the line

(-2,-5), (1,1), and (3,5) is in the orange

(5,5)  Isn't right because it's not on the line nor in the orange

4 0
3 years ago
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