The answer is D, there is no bias as Josh used random sampling.
Answer:
A) x + 2 ≤ 3
Step-by-step explanation:
To solve for this, you subtract 2 from both sides leaving you with:
x ≤ 1
which is what the graph is showing.
First observe that if 
,
Let 
and 
. It follows that
Now let 
, so 
. Solving for 
,
which means
Now solve for 
.
(note that we assume 
)
(we omit 
since 
is not true)
The numbers are (-8, 3) or (3, -8).
Step-by-step explanation:
- Step 1: Given the product of the numbers are -24 and their sum are -5. Let the numbers be a and b. Form equations out of these details.
⇒ a + b = -5 ⇒ b = -5 - a
⇒ a × b = -24 -------- (1)
- Step 2: Substitute the value of b in eq(1)
⇒ a × (-5 - a) = - 24
⇒ -5a - a² = -24
⇒ a² + 5a - 24 = 0
- Step 3: Solve the quadratic equation for a.
a = (-5 ± √25 - 4 × 1 × -24)/2
= (-5 ± √121)/2
= - 16/2, 6/2 = -8 or 3
- Step 4: For each value of a, find b.
When a = -8, b = -5 +8 = 3
When a = 3, b = -5 - 3 = -8.
