Exact from is 4096/27
In decimal form is 151.703
In mixed from is 151 19/27
Hope it help u
Solve for x:10 - (7 x^2)/3 + X^4/3 = 0
Subtract X^4/3 + 10 from both sides:-(7 x^2)/3 = -X^4/3 - 10
Multiply both sides by -3/7:x^2 = X^4/7 + 30/7
Take the square root of both sides:Answer: x = sqrt(X^4/7 + 30/7) or x = -sqrt(X^4/7 + 30/7)
Answer:
That looks awesome!
Step-by-step explanation:
Answer: (x,y) = (6,-3)
This means 6 goes in the first blank and -3 goes in the second blank.
=========================================================
Explanation:
Solve the second equation for x
x+8y = -18
x = -18-8y
We'll plug that into the first equation and isolate y. This is where substitution comes in.
5x + 7y = 9
5( x ) + 7y = 9
5( -18-8y ) + 7y = 9 ... replace x with -18-8y
-90-40y + 7y = 9
-90-33y = 9
-33y = 9+90
-33y = 99
y = 99/(-33)
y = -3
Use this y value to find x
x = -18-8y
x = -18-8(-3)
x = -18+24
x = 6
The solution is (x,y) = (6,-3)
----------------------
Checking the answer:
Let's check the first equation
5x+7y = 9
5(6)+7(-3) = 9 ... plug in (x,y) = (6,-3)
30-21 = 9
9 = 9 .... true equation
Do the same for the second equation as well
x+8y = -18
6 + 8(-3) = -18
6 - 24 = -18
-18 = -18 .... also true
Both equations are true when we plug in (x,y) = (6,-3), so the solution is confirmed.
Answer:
B.
Step-by-step explanation: