Answer:
a = 0.05
Claim: The success rate of the XSORT method of gender selection.
x = 55
n = 100
Null and alternative hypothesis is
H0:P=0.5 Vs P 0.5
p0 : 0.5
x : 55
n : 100
prop : p0
calculate
we get
z = 1
p = 0.317310
so p value > 0.05 we fail to reject null hypothesis.
Conclusion : There is sufficient evidence that we support null hypothesis.
That is the success rate of the XSORT method of gender selection
Let their ages be m and t, respectively. Currently, m = 4t.
In ten years: t+10 = (1/2)(m+10).
Multiplying both sides by 2, we get 2t + 20 = m + 10. Substituting 4t for m produces
2t + 20 = 4t + 10. Then 10 = 2t, and t=5. Tamanna is currently 5 years old, and her mother is 20.
Answer:
8, 15, 17 and
Step-by-step explanation:
All parts of arithmetic equations have names. In an addition equation, addends are the numbers that are added together to give a sum. In a subtraction equation, the subtrahend is taken away from the minuend to give a difference. In a multiplication equation, factors are multiplied to give a product.