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Mazyrski [523]
3 years ago
10

Una paid $2.14 for a notebook. She gave the cashier a $5 bill. How much change did she receive?

Mathematics
2 answers:
Blizzard [7]3 years ago
6 0

Answer:

$2.86 thats how much sh gets back

Alex787 [66]3 years ago
5 0

Answer:2.86

Step-by-step explanation: 5 - 2.14 = 2.86

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How do you find the normal approximation without using the continuity correction?
Dennis_Churaev [7]
Let's say you want to compute the probability \mathbb P(a\le X\le b) where X converges in distribution to Y, and Y follows a normal distribution. The normal approximation (without the continuity correction) basically involves choosing Y such that its mean and variance are the same as those for X.

Example: If X is binomially distributed with n=100 and p=0.1, then X has mean np=10 and variance np(1-p)=9. So you can approximate a probability in terms of X with a probability in terms of Y:

\mathbb P(a\le X\le b)\approx\mathbb P(a\le Y\le b)=\mathbb P\left(\dfrac{a-10}3\le\dfrac{Y-10}3\le\dfrac{b-10}3\right)=\mathbb P(a^*\le Z\le b^*)

where Z follows the standard normal distribution.
8 0
3 years ago
Which of the following expressions is equivalent to the expression 36 + 42?
olga2289 [7]
The answer is 6(6 + 7)
7 0
2 years ago
Read 2 more answers
On a vacation trip to Canada you realize that the speed limit signs are in km/hour. Unfortunately, your speedometer only reads i
Annette [7]

Answer:

120 km is 74.56 miles so just round that

3 0
3 years ago
Read 2 more answers
Make m the subject of the equation<br> (a) 5(m + y) = 4(m - 3y)
castortr0y [4]

Answer:

m=(-5y-3y)

Step-by-step explanation:

5m+5y=4m-3y

5m-4m=-5y-3y

m(5-4)=-5y-3y

m=(-5y-3y)/1

7 0
2 years ago
Help on this one please
kvv77 [185]

Answer:

d ≈ 1732 ft

Step-by-step explanation:

Angle of elevation = Angle of depression

Following this truth,

m∠PAQ (Angle of depression) = m∠APB (Angle of elevation) = 30°

By applying tangent rule in the given triangle ABP,

tan(30°) = \frac{AB}{PB}

\frac{1}{\sqrt{3}}=\frac{1000}{d}

d = 1000√3

d = 1732.05

d ≈ 1732 ft

6 0
2 years ago
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