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HACTEHA [7]
2 years ago
9

Which of the following offer better value for money?

Mathematics
1 answer:
Stels [109]2 years ago
5 0

Answer:

40 teabags for 0.96 (this is the most british question I've ever saw)

Step-by-step explanation:

1.62 / 60 = 0.027 (price per teabag)

0.96 / 40= 0.024 (price per teabag)

40 teabags for 0.96 is the better deal

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Dan is building a circular swimming pool and wants the circumference to be no more than 95 feet. What is the largest radius poss
anastassius [24]

Answer:

Step-by-step explanation:

When C=95,

     A = (100*95)/(4*3.14159) = 9500/3.14159 = 3023.94 sq. ft.

8 0
3 years ago
A plumber's daily earnings have a mean of $145 per day with a standard deviation of $16.50.
avanturin [10]

Step-by-step explanation:

The plumber's daily earnings have a mean of $145 per day with a standard deviation of

$16.50.

We want to find the probability that the plumber earns between $135 and

$175 on a given day, if the daily earnings follow a normal distribution.

That is we want to find P(135 <X<175).

Let us convert to z-scores using

z =  \frac{x -  \mu}{ \sigma}

This means that:

P(135  \: <  \: X  \: <  \: 175) = P( \frac{135 - 145}{16.5}  \: <  \:  z \:  <  \frac{175 - 145}{ 16.5} )

We simplify to get:

P(135  \: <  \: X  \: <  \: 175) = P(  - 0.61\: <  \:  z \:  <  1.82 )

From the standard n normal distribution table,

P(z<1.82)=0.9656

P(z<-0.61)=0.2709

To find the area between the two z-scores, we subtract to obtain:

P(-0.61<z<1.82)=0.9656-0.2709=0.6947

This means that:

P(135  \: <  \: X  \: <  \: 175) =0.69

The correct choice is C.

7 0
3 years ago
Mariah’s parents got into a car accident. They took their car to the
KatRina [158]

Answer: The mechanics spent about 8.5 hours working on the car

Step-by-step explanation: The total bill was $637, a portion of that being getting the parts which was $280. 637-280=357

357/42=8.5

5 0
3 years ago
imagine reporting a question like if you dont like it just go to anothr question like yall be pressed for what.... love yall tho
mario62 [17]

Answer:

what the heck

was that also i'm country

Step-by-step explanation:

4 0
3 years ago
What if i=radical -1, what is the value of i^3
aleksklad [387]

\bf i^3\implies \sqrt{-1}\cdot \sqrt{-1}\cdot \sqrt{-1}\implies (\sqrt{-1})^2\sqrt{-1}\implies \sqrt{(-1)^2}\cdot \sqrt{-1} \\\\\\ -1\cdot i\implies \boxed{-i}

6 0
3 years ago
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