4x + 18x - 12
(4x + 18x) - 12
22x - 12
Answer: C).
Given:
p = 90% = 0.9, the probability that the seed grows into a healthy plant.
Therefore
q = 1 - p = 0.1, the probability that the seed will not grow into a healthy plant.
n = 7, the number of seeds planted.
Let r = 4, expected number of seeds that will grow.
Use the Binomial distribution to determine
P(4 of 7 seeds will grow) = ₇C₄ p⁴q⁽⁷⁻⁴)
= 35*(0.9⁴)*(0.1³)
= 0.023
P(4 of 7 seeds will not grow) = 1 - P(4 of 7 seeds will grow)
= 1 - 0.023
= 0.977 or 97.7%
Answer: 97.7%
Answer:
30 degrees
Step-by-step explanation:
Since one leg is half the length of the hypotenuse, it's a 30-60-90 right triangle. Therefore, the angle opposite the smaller leg is 30 degrees.
Answer:
The answer is
x
=
7
and
x
=
2
.
Factor the left side of the equation.
(
x
−
7
)
(
x
−
2
)
=
0
Solve each term in the product separately.
x
−
7
=
0
Add 7 to both sides.
x
=
7
x
−
2
=
0
Add 2 to both sides.
x
=
2
Check.
x
=
7
7
2
−
9
(
7
)
+
14
=
0
49
−
63
+
14
=
0
x
=
2
2
2
−
9
(
2
)
+
14
=
0
4
−
18
+
14
=
0
Answer link
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