<span>x=<span><span>16</span>+<span><span><span><span>16</span><span>√133</span></span><span> or </span></span>x</span></span></span>=<span><span>16</span>+<span><span><span>−1</span>6</span><span>√<span>133 ---- Use the quadratic formula. </span></span></span></span>
Answer:
c. ax+b=ax+b
Step-by-step explanation:
To know what equation has infinite solutions, you first try to simplify the equations:
a.

In this case you have that a must be different of b, but there is no restriction to the value of c, then c can be equal to a or b.
b.

Here you obtain that b = c. But the statement of the question says that a, b and c are three different numbers.
c.

In this case you have that whichever values of a, b and are available solutions of the equation. Furthermore, when you obtain 0=0, there are infinite solutions to the equation.
Then, the answer is:
c. ax+b=ax+b
Answer:
fifth graders= 93 shirts
sixth graders= 156 shirts
teachers= 51 shirts
Step-by-step explanation:
31% of 300 is 93
52% of 300 is 156
156+93= 249
300-249= 51
Answer:
53.3%
Step-by-step explanation:
Here we will use binomial probability:
P = nCr pʳ qⁿ⁻ʳ
where n is the number of trials,
r is the number of successes,
p is the probability of success,
and q is the probability of failure (1−p).
In this case, n = 11, r ≥ 7, p = 0.6, and q = 0.4.
P = ₁₁C₇ (0.6)⁷ (0.4)⁴ + ₁₁C₈ (0.6)⁸ (0.4)³ + ₁₁C₉ (0.6)⁹ (0.4)² + ₁₁C₁₀ (0.6)¹⁰ (0.4)¹ + ₁₁C₁₁ (0.6)¹¹ (0.4)⁰
P = 0.236 + 0.177 + 0.089 + 0.027 + 0.004
P = 0.533