Answer:
2
Step-by-step explanation:
9(x+1)=25+x
9x+9=25+x
9x-x=25-9
8x=16
x=16/8
x=2
The ratio here is 16:436.
The easiest way to solve this is finding how many miles Jim can drive using just 1 gallon. We can do this by dividing both sides of the ratio by 16.
16÷16 is 1
436÷16 is 27.25
so our new ratio is 1 gallon:27.25 miles.
next we simply multiply both sides by 14.
1x14=14
27.25x14=381.5 miles :)
If youre a cashier
if youre a mathematician
if you have to pay taxes and bills
if your have to loan something
:1
i didnt understand the question because of my English sorry
:2
we all know that the total of degrees is 180 so 70+70=140
180-140=40
so the answer is 40
3:
we have a figure with 4 angle so the total of degrees is 360 so the answer is 126
4:
the answer most be 50 becuse we have a Special degree witch always equal 90 if we have recatngle so
x+40=90
X=50 the answer and if you want to try again choose the second one
2x-10=90
2x=100
X=50 same answe you see
5:
in this quastion i searched and find alot of answers any way
its should be 7 or 3 but the correct answer in my opinion its 7
its shows in the picture i sent hopefully its helpful to you i will try to translate the first quastion and sent it to you
Answer:
The standard form of a quadratic equation is:
, ![a\neq 0](https://tex.z-dn.net/?f=a%5Cneq%200)
Quadratic Formula Derivation:
![ax^2+bx+c=0\\](https://tex.z-dn.net/?f=ax%5E2%2Bbx%2Bc%3D0%5C%5C)
![$x^2+\frac{b}{a}x+\frac{c}{a} =0 $](https://tex.z-dn.net/?f=%24x%5E2%2B%5Cfrac%7Bb%7D%7Ba%7Dx%2B%5Cfrac%7Bc%7D%7Ba%7D%20%3D0%20%24)
![$x^2+\frac{b}{a}x = -\frac{c}{a}$](https://tex.z-dn.net/?f=%24x%5E2%2B%5Cfrac%7Bb%7D%7Ba%7Dx%20%3D%20-%5Cfrac%7Bc%7D%7Ba%7D%24)
Completing the Square:
![$x^2+\frac{b}{a}x +\frac{b^2}{4a^2} = \frac{b^2}{4a^2}-\frac{c}{a}$](https://tex.z-dn.net/?f=%24x%5E2%2B%5Cfrac%7Bb%7D%7Ba%7Dx%20%2B%5Cfrac%7Bb%5E2%7D%7B4a%5E2%7D%20%3D%20%5Cfrac%7Bb%5E2%7D%7B4a%5E2%7D-%5Cfrac%7Bc%7D%7Ba%7D%24)
![$ ( x+\frac{b}{2a} )^2 = \frac{b^2-4ac}{4a^2} $](https://tex.z-dn.net/?f=%24%20%20%28%20x%2B%5Cfrac%7Bb%7D%7B2a%7D%20%29%5E2%20%3D%20%20%5Cfrac%7Bb%5E2-4ac%7D%7B4a%5E2%7D%20%20%24)
Square Root property:
![$x+\frac{b}{2a} = \pm \sqrt{ \frac{b^2-4ac}{4a^2}} $](https://tex.z-dn.net/?f=%24x%2B%5Cfrac%7Bb%7D%7B2a%7D%20%20%3D%20%5Cpm%20%5Csqrt%7B%20%5Cfrac%7Bb%5E2-4ac%7D%7B4a%5E2%7D%7D%20%20%20%24)
![$x = -\frac{b}{2a} \pm { \frac{\sqrt {b^2-4ac}}{2a}} $](https://tex.z-dn.net/?f=%24x%20%20%3D%20-%5Cfrac%7Bb%7D%7B2a%7D%20%5Cpm%20%20%7B%20%5Cfrac%7B%5Csqrt%20%7Bb%5E2-4ac%7D%7D%7B2a%7D%7D%20%20%20%24)
![$x = \frac{-b\pm\sqrt{b^2-4ac}} {2a} } $](https://tex.z-dn.net/?f=%24x%20%20%3D%20%20%5Cfrac%7B-b%5Cpm%5Csqrt%7Bb%5E2-4ac%7D%7D%20%7B2a%7D%20%20%7D%20%20%20%24)