Answer:
The relevant probability is P(55 or more girls) so 55 girls in 100 births is not a significantly high number of girls because the relevant probability is greater than 0.05
tep-by-step explanation:
<span>2(x
− 4) + 5x = 9x − 10
Given ⇒ 2(x − 4) + 6x = 9x − 10
Step 1 ⇒ 2x − 8 +
6x = 9x − 10
Step 2 ⇒ 2x + 6x − 8 = 9x − 10
Step 3 ⇒ 8x − 8 = 9x − 10
Step 4 ⇒ 8x − 8x − 8 = 9x − 8x − 10
Step 5 ⇒ 0 − 8 = x − 10
Step 6 ⇒ −8 =
x − 10
Step 7 ⇒ −8 + 10 = x − 10 + 10
Step 8 ⇒ 2 = x + 0
Step 9 ⇒ 2 = x
The Additive Identity Property states that zero added to a number equals the number.
The only place where zero is added to a number is on step 8 where you see x + 0.
Step 9 shows that x + 0 = x.
Answer: Step 9
</span>
The appropriate inequality would be 4x + 19 ≤ -26
Let's compare the given function with the model for a quadratic equation:
Since the value of a is positive, the parabola has its concavity upwards, and the function has a minimum value.
The minimum value can be found calculating the y-coordinate of the vertex:
Therefore the minimum value is -24.