Since x=-1 and y=3
ax-2y=4
a(-1)-2(3)=4
-a-6=4
-a=10
a=-10
5x+by=-1
5(-1)+b(3)=-1
-5+3b=-1
3b=4
b=4/3
Answer:
4
Step-by-step explanation:
48 ÷ 12 = 4
hope this helps
Answer:
1 lap in 4/5 minute.
Step-by-step explanation:
10/8=1/x
cross product
simplify 10/8 into 5/4
5/4=1/x
cross product
4*1=5*x
4=5x
x=4/5
Answer:
Kindly check explanation
Step-by-step explanation:
(a)
H0 : μ = 12
H1 : μ > 12
This is a right tailed test ; the alternative hypothesis has a greater than sign, difference between sample and population mean value will be positive.
(b)
H0 : μ = 10
H1 : μ > 10
This is a right tailed test ; the alternative hypothesis has a greater than sign, difference between sample and population mean value will be positive.
(c)
H0 : μ = 100
H1 : μ < 100
This is a left tailed test ; the alternative hypothesis has a less than sign, difference between sample and population mean value will be negative.
(d)
H0 : μ = 12
H1 : μ > 12
This is a right tailed test ; the alternative hypothesis has a greater than sign, difference between sample and population mean value will be positive.
