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3 years ago

The price of an item is $6.15. You want to buy two of the items and give the cashier a $10 and a $5 bill. What is the change?

Mathematics

2 answers:

Anni [7]3 years ago

8 0

Answer: The answer is 2 dollars and 70 cents

Step-by-step explanation: if you add 6.15 and 6.15 it equals 12.30 and then if you subtract 15.00 and 12.30 it equals 2.70

shtirl [24]3 years ago

3 0

Answer:the answer is

$2.7

Step-by-step explanation:

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2 years ago

Did I do this correctly?

lorasvet [3.4K]

Answer:

No, The answer should be 240

Step-by-step explanation:

The first step to finding the Surface Area was done well and was right but you got confused when trying to add the area of each shape
There is 3 Rectangles and 2 Traingles.
Let's start with the area of the triangles. 1/2bh is the formula for finding area of Traingles. 1/2(4)(6) = 12. We have two Traingles so that would be 24.
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3 years ago

The time it takes me to wash the dishes is uniformly distributed between 10 minutes and 15 minutes. What is the probability that

mario62 [17]

Answer:

The probability that washing dishes tonight will take me between 12 and 14 minutes is 0.1333.

Step-by-step explanation:

Let the random variable X represent the time it takes to wash the dishes.

The random variable X is uniformly distributed with parameters a = 10 minutes and b = 15 minutes.

The probability density function of X is as follows:

$f_{X}(x)=\frac{1}{b-a};\ a$

Compute the probability that washing dishes will take between 12 and 14 minutes as follows:

$P(12\leq X\leq 14)=\int\limits^{12}_{14} {\frac{1}{15-10} \, dx$

$=\frac{1}{5}\int\limits^{12}_{14} {1} \, dx \\\\=\frac{1}{5}\times [x]^{14}_{12}\\\\=\frac{1}{15}\times [14-12]\\\\=\frac{2}{15}\\\\=0.1333$

Thus, the probability that washing dishes tonight will take me between 12 and 14 minutes is 0.1333.

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