Because they were flipped and turned
Answer:
0.3125
Step-by-step explanation:
When a fair coin is tossed we find that
there are only two outcomes
Each toss is independent of the other
Hence if Xis no of heads then X is binomial with n = 5 and p = 0.5
Using binomial formula we can find probability for getting 3 heads exactly.
Required probability
= P(X=3)
= ![5C3(0.5)^3 (0.5)^2\\= 10(0.5)^5\\=0.3125](https://tex.z-dn.net/?f=5C3%280.5%29%5E3%20%280.5%29%5E2%5C%5C%3D%2010%280.5%29%5E5%5C%5C%3D0.3125)
Answer: 6
Step-by-step explanation:
91 is your composite number
Everything else is prime.
Let's solve for x.
2
x
+
2
y
=
7
Step 1: Add -2y to both sides.
2
x
+
2
y
+
−
2
y
=
7
+
−
2
y
2
x
=
−
2
y
+
7
Step 2: Divide both sides by 2.
2
x
2
=
−
2
y
+
7
2
x
=
−
y
+
7
2
Let's solve for y.
2
x
+
2
y
=
7
Step 1: Add -2x to both sides.
2
x
+
2
y
+
−
2
x
=
7
+
−
2
x
2
y
=
−
2
x
+
7
Step 2: Divide both sides by 2.
2
y
2
=
−
2
x
+
7
2
y
=
−
x
+
7
2
Answer:
y
=
−
x
+
7
2