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3 years ago

Help please due today and it’s a benchmark

Mathematics

1 answer:

Leona [35]3 years ago

8 0

Answer:

Step-by-step explanation:

Ok, so the third and fourth don't seem right. I am going to assume it's either 1 or 2. Sorry if you get it wrong because of me.

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Alice has $90 to spend on

nlexa [21]

Answer:

step by step explanation:

if she gets $10 off of her purchase that means she would have a little extra money to another shirt

5 0

3 years ago

The number of failures of a testing instrument from contamination particles on the product is a Poisson random variable with a m

photoshop1234 [79]

Answer: 0.1353

Step-by-step explanation:

Given : The mean of failures = 0.025 per hour.

Then for 8 hours , the mean of failures = $\lambda=8\times0.25=2$ per eight hours.

Let X be the number of failures.

The formula to calculate the Poisson distribution is given by :_

$P(X=x)=\dfrac{e^{-\lambda}\lambda^x}{x!}$

Now, the probability that the instrument does not fail in an 8-hour shift :-

$P(X=0)=\dfrac{e^{-2}2^0}{0!}=0.1353352\approx0.1353$

Hence, the the probability that the instrument does not fail in an 8-hour shift = 0.1353

7 0

3 years ago

Estimate 12.56+12.69 using front-end estimation.

marissa [1.9K]

<span>12.56+12.69 = 12.60 + 12.70 = 25.30

answer

</span><span>A. about $25.30</span>

5 0

3 years ago

A school bus has 22 rows of seats, and 4 students can be seated in each row. Students riding in the bus have filled 19 rows of s

Lelu [443]

Answer:

Step-by-step explanation:

total no. of seats = 22 x 4 = 88

total no. of seats occupied = 19 * 4 + (22-19)*4/2 = 76 + 6 = 82

no. of empty seats = 88 -82 = 6

3 0

2 years ago

Each pound of fruit costs $4. Write an expression that shows the total cost of the fruit. Use the variable you identified in que

vovangra [49]

Answer:

$ $4f$

Step-by-step explanation:

Let's assume $f$ represents the number of pounds of fruit.

We need to multiply the number of pounds of fruit by the cost per pound.

This is $ $f * 4$ , or in a simpler form, $ $4f$ .

6 0

3 years ago