We have the mean, μ = 20 and the standard deviation, σ = 4
X ≈ N(20, 4²)
We want P(X<15)
Standardising gives
P(X<15) = P(Z<
)
P(X<15) = P(Z< -1.25) ⇒ When the value of the z-score is negative, we will read the value of z<1.25 on the z-table then subtract the answer from 1
P(X<15) = 1 - P(Z<1.25)
P(X<15) = 1 - 0.8944
P(X<15) = 0.1056
Hence, the probability that pizza takes less than 15 minutes to be delivered is 0.1056 = 10.56%
Answer:
31.25×
Step-by-step explanation:
suppose that the value of x was 3 . that would mean that they bought 3 calculators .
if one calculator is $31.25 then 3 would be $31.25× 3
the same rule would apply for x
1:4 = 2:8
1:3 = 2:6
2:3 =4:6
1:12 = 4:48
Hope this helps!!
Y = x^2 + 1
if x = 1 then
y = 1^2 + 1 ( 1^2 = 1 )
y = 1 + 1
y = 2
<h3><u>
Answer:</u></h3>
<h3><u>
Step-by-step explanation:</u></h3>
We know that:
- Total degrees of triangle: 180°
Using this clue, we can find m∠1.
- => 67 + 62 + m∠1 = 180
- => 129 + m∠1 = 180
- => m∠1 = 180 - 129
- => m∠1 = 51°
<h3><u>
Conclusion:</u></h3>
We have finally found the answer to the missing angle. The answer is 51°.
Hoped this helped.