Answer:
Step-by-step explanation:
a = 5b-10
a+b = 26
(5b-10)+b = 26
b = 6
a= 5b + 10 = 40
1/2(16+22)
= 1/2 (38)
= 19
the length if the midsegment is 19
I'm pretty sure...
Answer:
D - It is impossible to make a judgment with the given information.
Step-by-step explanation:
The fact that 1200 births were randomly selected and only 599 of such picks are girls does not give enough information on whether the birth is significantly high, low or neither. We must have other information to test for significance of the births proportion.
All we know is that;
Proportion of girls birth (p) = 599/1200 = 0.499. And by default, the proportion of male births (q) will be 1-p = 1-0.499 = 0.501.
If we examine the proportion closely, there seems to be no significant difference in the birth proportion.
Having said this, we cannot really imply that, the number of girls is significantly high. Or the number of girls is neither significantly low nor significantly high. Or the number of girls is significantly low.
The best subjective submission will be that, <em>there is no significant difference between girls birth and males birth.</em> The question of high or low (an alternative hypothesis) requires some further statistical test and this question does not provide further details.
Patterns: vertical : y = a(x - h)² + k horizontal: x = a(y - k)² + h
Look at the patterns above and remember these key points.
<span>1) if the x is squared, the parabola is vertical. It either opens up or down. </span>
if the y is squared, the parabola is horizontal. It either opens left or right.
2) if a is positive, the parabola opens up or to the right.
if a is negative, the parabola opens down or to the left
<span>3) the vertex is at (h,k). Be very careful. locations of h and k varies if the parabola is vertical or horizontal. its sign is also different in those positions</span>
