1. 7x + 3 - 2x....x = 8
7(8) + 3 - 2(8) = 56 + 3 - 16 = 43
4. 7 - (-2y) + y - 9....y = 6
7 - (-2(6) + 6 - 9 = 7 + 12 + 6 - 9 = 16
7. -x + 8 + 7x - (-1).....x = -10
-(-10) + 8 + 7(-10) + 1 = 10 + 8 - 70 + 1 = -51
10. 4x + 2y - x - 8....x = 1, y = 5
4(1) + 2(5) - 1 - 8 = 4 + 10 - 9 = 5
13. 2x + 5y - 3x + (-8y)....x = -9, y = 9
2(-9) + 5(9) - 3(-9) - 8(9) = -18 + 45 + 27 - 72 = -18
P = -9/4
That is the answer
I think as that is a variable so when you like add there is already a constant so it is 1
1+1+1+1= 4
x=1
The numbers are 3 and 18
Step-by-step explanation:
Step 1: Given details are sum of numbers = 21, let the numbers be x and y. Form equations out of the given details.
⇒ x + y = 21 ---- (1)
⇒ y = 6x --------- (2)
Step 2: Substitute (2) in (1)
⇒ x + 6x = 21
⇒7x = 21
⇒x = 3
- Step 3: Find the value of y using x
⇒ y = 6 × 3
⇒ y = 18
Solve the inequality. Graph the solution.
−8≤z+6.4
The solution is
