Answer:
X1 =-10, X2= 4
Step-by-step explanation:
|-3-x|-2=5
|-3-x|=5+2
|-3-x|= 7
-3-x=7
-4-x=-7
Then slove for X
Answer:
It means that 20 times x is 5
also the answer to that problem (20x=5) is 1/4
Step-by-step explanation:
20x means
20 * x
and since 20 * x = 5
divide 5 and 20
5/20 = 1/4
Answer:
455.
Step-by-step explanation:
Yes. You require the number of combinations of 3 from 15.
15C3
The formula for this is 15! / 12! 3! or you can do itr as follows
15C3 = 15*14*13/3*2*1
= 5*7*13
= 35*13
= 455.
Answer:
the diameter will be D=26 in.
Step-by-step explanation:
The area of a circle is given by:
(1)
Where:
- A is the area
- R is the radius of the circle
Now, we know that A = 169 π in²
So, we just need to use equation 1 to find R.



Therefore, the diameter will be D=2*R=26 in.
I hope it helps you!
Answer:
17. x = y^2 - 2ay +a^2
18. x = y^2 - a
Step-by-step explanation:
17. Since we want to make x the subject of the formula, we first isolate the square root of x and get
= y - a.
squaring both sides,
x = y^2 - 2ay +a^2
18. Since both x and the a are under the square root, we first start by squaring both sides.
So y^2 = x+a.
Isolating the x, we get
x = y^2 - a