Answer:
18b-4x-5y-26
Step-by-step explanation:
-4(x-2)-5(y+2)+(-3)(8-6b)
-4x+8-5y-10-24+18b
-4x-5y-26+18b
18b-4x-5y-26
Answer:
9 inches
Step-by-step explanation:
inches
RX is + XS is the hypotenuse of the right triangle RTS, then:
(RX + XS)^2 = (RT)^2 + (ST)^2
=> (4+9)^2 = (RT)^2 + (ST)^2
=> 13^2 = (RT)^2 + (ST)^2 .....equation (1)
Triangle RTX and XST are also right triangles.
RT is the hypotenuse of RTX and ST is the hypotenuse os SXT.
Then, (RT)^2 - (RX)2 = (TX)^2 and (ST)^2 - (SX)^2 = (TX)^2
=> (RT)^2 - (RX)^2 = (ST)^2 - (SX)^2
=> (RT)^2 - (ST)^2 = (RX)^2 -(SX)^2
=> (RT)^2 - (ST)^2 = 4^2 - 9^2 = 16 - 81 = - 65
=> (ST)^2 - (RT)^2 = 65 ..........equation (2)
Now use equations (1) and (2)
13^2 = (RT)^2 + (ST)^2
65 = (ST)^2 - (RT)^2
Add the two equations:
13^2 + 65 = 2(ST)^2
2(ST)^2 =178
(ST)^2 = 234/2 = 117
Now use (ST)^2 - (SX)^2 = (TX)^2
=> (TX)^2 = 117 - 81 = 36
=> (TX) = √36 = 6
Answer: 6
Answer:
4th one
Step-by-step explanation:
When a number is followed by an exclamation point (!) it means that number gets multiplied by all the numbers below it.
So 7! = 7*6*5*4*3*2*1 = 5040
4! = 4*3*2*1 = 24
6! = 6*5*4*3*2*1 = 720
Now the equation is:
5040 * 24 -720
5040 *24 = 120960
120960 - 720 = 120240
The answer is A.