Answer:
I think C I hope it helps you
thank you
You plug in 4 for x
Which would be
(-4)^2-(-4)
-4×-4=16
16-(-4)
16+4=20
f(-4)=20
Answer:
- (-∞, ∞)
- (-∞, 3) ∪ (5, ∞)
- (2, 6)
Step-by-step explanation:
a) f(x) > 0 for all x: (-∞, ∞)
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b) f(x) > 4 for x < 3 and x > 5: (-∞, 3) ∪ (5, ∞)
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c) f(x) < 5 for 2 < x < 6: (2, 6)
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<em>Comment on the notation</em>
The brackets are round brackets (parentheses) because the end points are not included in the interval. The first number corresponds to the left end of the interval on the number line. The second number corresponds to the right end of the interval on the number line. When intervals are disjoint, their union is indicated with the appropriate symbol.
If the end number is included in the interval, a square bracket is used:
1 < x ≤ 3 ⇒ (1, 3]
Answer:
a)
b)
c)
d)
Step-by-step explanation:
a) If the coins are all the same, we have a combination of 35 identical coins in 5 persons.
The amount of combinations is
being n the number of coins and r the number of grandchildren.
b) If the coins are different, the number of combinations can be calculated as:
c) If the coins are all the same, and each grandchild gets the same number of coins, there is only one combination for that (everyone gets 35/5=7 coins)
d) If the coins are all distinct, but each of the grandchildren get the same numer of coins, the expression to calculate this is:
Answer:
Radius is distance from center to edge, and diameter is distance from edge to edge through the center. So for a: 5mm is radius, 10mm is diameter.
B: 6cm is radius, 12cm is diameter.
Step-by-step explanation: