Answer:
The answer is 10
Step-by-step explanation: You multiply the 2 times twenty to get 40 then multiply the 2 times 2x to get 4x then subtract fourty from both sides and you will get fourty and then divide so 40 divided by 4x equals 10.
Answer:
1
Step-by-step explanation:
Factorise numerators/ denominators where possible
3x² - 4x + 1 = (x - 1)(3x - 1)
x² - 1 ← is a difference of squares and factors as
x² - 1 = (x - 1)(x + 1)
Expressing the product in factored form
× 
Cancel common factors on numerator/denominator, that is
Cancel (x - 1) , (x + 1) and (3x - 1), leaving the simplified form 1
Answer:
The roots of the equation are
<h3>- 4 and 4</h3>
Step-by-step explanation:
First rewrite the expression
That's
x² - 16
16 = 4²
So we have
x² - 4² = 0
Using the identity
<h3>a² - b² = (a + b)(a - b)</h3>
Rewrite the expression
So we have
x² - 4² = 0 is
( x + 4)( x - 4) = 0
x + 4 = 0 x - 4 = 0
x = - 4 x = 4
The roots of the equation are
- 4 and 4
Hope this helps you
The formula for volume of a sphere is:
V = 4/3 * PI * r^3
Replace r with with given radius:
V = 4/3 * pi * 17^3
V = 4/3 * PI * 4913
You don't give the choices, but anything like the two equations I gave could be correct. Might even multiply the 4/3 by r^3?
If you list the choices I can tell you which one.
Answer:
a:30 b:70 c:80
Step-by-step explanation:
triangle= 180*
3:7:8= 180*
7+3+8= 18
180/18= 10
a= 3x10= 30*
b=7x10= 70*
c=8x10= 80*
