The graph shows the number of boys and girls who purchased different types of food.
2 answers:
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Answer:
Option B 3,-3,-6 is correct.
Step-by-step explanation:
We need to find real zeroes of
Solving
Taking x^2 common from first 2 terms and -9 from last two terms we get
Taking (x+6) common
x^2-9 can be solved using formula a^2-b^2 = (a+b)(a-b)
Putting it equal to zero,
So, Option B 3,-3,-6 is correct.
Answer:
C. The president rejects the hypothesis that the proportion of students who earn a bachelor's degree within six years is 0.398, when, in fact, the proportion is 0.398.
Step-by-step explanation:
A type I error occurs if you reject the null hypothesis when it is true.
Now the hypotheses are:
The proportion is 0.398
The proportion is less than 0.398
If in actual fact the proportion is 0.398, then the president must not reject the
.
This is a correct decision.
If in actual fact the proportion is 0.398, and the president rejects the, then a type I error is committed.
The correct choice is C.
C. The president rejects the hypothesis that the proportion of students who earn a bachelor's degree within six years is 0.398, when, in fact, the proportion is 0.398.
Step-by-step explanation:
A type I error occurs if you reject the null hypothesis when it is true.
Now the hypotheses are:
If in actual fact the proportion is 0.398, then the president must not reject the
This is a correct decision.
If in actual fact the proportion is 0.398, and the president rejects the
The correct choice is C.
Answer:
180
Step-by-step explanation:
find the height by using pythagoras theorem
25²=7²+h²
h=24
then by using trapezium area formula, you will get it