Answer:
x = 1, y = -2
Step-by-step explanation:
15x + 3y = 9 (1)
10x + 7y = -4 (2)
3 × (2) - 2 × (1)
3 × (2)
30x + 21y = -12 (3)
2 × (1)
30x + 6y = 18 (4)
(3) - (4)
15y = -30
y = -30 / 15
y = -2
sub y = -2 into (1)
15x + 3y = 9
15x + (3 × -2) = 9
15x - 6 = 9
15x = 9 + 6
15x = 15
x = 15 / 15
x = 1
Answer: 0.126
Step-by-step explanation:
Answer:
6x^3y
Step-by-step explanation:
Step by step solution :
Step 1 :
y
Simplify —
3
Equation at the end of step 1 :
y
((18 • (x2)) • —) • x
3
Step 2 :
Equation at the end of step 2 :
y
((2•32x2) • —) • x
3
Step 3 :
Dividing exponents :
3.1 32 divided by 31 = 3(2 - 1) = 31 = 3
Equation at the end of step 3 :
6x2y • x
Step 4 :
Multiplying exponential expressions :
4.1 x2 multiplied by x1 = x(2 + 1) = x3
Final result :
6x^3y
Answer:She placed the decimal point incorrectly when dividing. i took the test
Answer:
11+4
Step-by-step explanation:
11+4=15
11-4=7.