All categories

3 years ago

What is the solution set of 7 x2 + 3 x = 0? {0, 3/7} {0, -3/7} {0, -4/7}

Mathematics

1 answer:

kari74 [83]3 years ago

4 0

Answer:

${ \tt{7 {x}^{2} + 3x = 0 }} \\ { \tt{x(7x + 3) = 0}}$

Either x = 0 or ( 7x + 3 ) = 0 :

${ \tt{7x + 3 = 0}} \\ { \tt{x = - \frac{3}{7} }}$

Answer:

${ \bf{(0, \: - \frac{3}{7}) }}$

You might be interested in

Find an equation for a line that passes through (-2,3) and (6,-1)

kompoz [17]

Answer:

I think it's y = -1/2x -2

Step-by-step explanation:

use the formula y - y1/ y2- y1= x - x1/x2-x1

5 0

3 years ago

PLEASE HELP! REWARDING BRAINLIEST

TEA [102]

X+2y=2 …(1)
x-2y=-2…(2)

(1)-(2): (x+2y)-(x-2y)=2- (-2)
4y=4
y=1

subs y=1 into(1)
x+2(1) =2
x=0

so x =0 y=1
the answer is C

7 0

3 years ago

What is the value of x? 140 34 56

olga55 [171]

I don’t know what you’re tying to say

3 0

2 years ago

An oil exploration company currently has two active projects, one in asia and the other in europe. let a be the event that the a

elena-s [515]

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

6 0

2 years ago

Find the Y-coordinate of point P that lies 1/3 along segment RS, where R (-7, -2) and S (2, 4).

QveST [7]

Solution:

Given that the point P lies 1/3 along the segment RS as shown below:

To find the y coordinate of the point P, since the point P lies on 1/3 along the segment RS, we have

$\begin{gathered} RP:PS \\ \Rightarrow\frac{1}{3}:\frac{2}{3} \\ thus,\text{ we have} \\ 1:2 \end{gathered}$

Using the section formula expressed as

$[\frac{mx_2+nx_1}{m+n},\frac{my_2+ny_1}{m+n}]$

In this case,

$\begin{gathered} m=1 \\ n=2 \end{gathered}$

where

$\begin{gathered} x_1=-7 \\ y_1=-2 \\ x_2=2 \\ y_2=4 \end{gathered}$

Thus, by substitution, we have

$\begin{gathered} [\frac{1(2)+2(-7)}{1+2},\frac{1(4)+2(-2)}{1+2}] \\ \Rightarrow[\frac{2-14}{3},\frac{4-4}{3}] \\ =[-4,\text{ 0\rbrack} \end{gathered}$

Hence, the y-coordinate of the point P is

$0$

8 0

1 year ago