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Leona [35]
3 years ago
11

A student skipped a step when she tried to convert 18 hours into seconds,

Mathematics
1 answer:
gladu [14]3 years ago
5 0

Answer:

The conversion of minutes to seconds is skipped in multiple-step conversion.

Step-by-step explanation:

Given:

To convert 18 hours into seconds.

Now, to get the conversion ratio skip in this multiple-step conversion.

First we need to convert hours into minutes:

1 hour = 60 minutes.

So, 18 hours = 18\times 60 minutes

                     = 1080 minutes.

Then, we convert minutes into seconds:

1 minute = 60 seconds.

So, 1080 minutes = 1080\times 60 seconds

                             =  64800 seconds.

Thus, 18 hours =  64800 seconds.

<u>As given in question the conversion from hours to seconds is there but the conversion of minutes to second is not there it is skipped so the result is incorrect.</u>

Therefore, the conversion of minutes to seconds is skipped in multiple-step conversion.

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Mo spends £15 on ingredients to make 40 cookies.
ahrayia [7]

Given :

Mo spends £15 on ingredients to make 40 cookies.

He sells all 40 cookies for 50p each.

To Find :

The Mo's percentage profit.

Solution :

We know, 1 £ = 66.09 p.

So, total income is :

T = 40 × 50 p

T = 2000 p

T = £2000/66.09  

T = £30.26

So, total profit is, P = £( 30.26 - 15 ) = £15.26 .

Hence, this is the required solution.

8 0
3 years ago
If L is the line through the point P=(3,2,1) and parallel to the vector v=⟨2,1,−3⟩, what is an equation of the plane that contai
zavuch27 [327]

Answer:

  3x +15y +7z = 46

Step-by-step explanation:

The cross product of v = <2, 1, -3> and PQ = <-5, 1, 0> is <3, 15, 7>, the normal vector of the plane of interest. That plane contains P and Q, so the constant in the plane's equation will be ...

  <3, 15, 7> · <3, 2, 1> = 46

The desired equation is ...

  3x +15y +7z = 46

4 0
3 years ago
8x - 2 = -9 + 7x this is for solving equations
dimulka [17.4K]

Answer:

x = -7

Step-by-step explanation:

8x - 2(+2)= -9(+2)+ 7x

8x(-7x) = -7 +7x(-7x)

x = -7

8 0
3 years ago
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Please help answer,all the questions below
IceJOKER [234]

Answer:

1.

triangle is some of 17 inch and 17 weight you have most

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8 0
3 years ago
A business knew that 30%, percent of its customers were less than 25 years old. The business wanted to increase this percentage,
jeyben [28]

Answer:

The answer is "0.9258201 or \bold{ \frac{0.36 -0.3}{\sqrt{\frac{0.3 \times 0.7 }{50}}}}".

Step-by-step explanation:

\to P= 30 \ \%\\\\ \to  x= 18 \\\\ \to n=50\\\\\\\hat p= \frac{x}{n} = \frac{18}{50} = 0.36 \\\\\bold{Formula:}\\\\X= \frac{\hat p -p}{\sqrt{\frac{p \times (1-p)}{n}}}\\\\

    = \frac{0.36 -0.3}{\sqrt{\frac{0.3 \times (1-0.3)}{50}}}\\\\= \frac{0.36 -0.3}{\sqrt{\frac{0.3 \times 0.7 }{50}}}\\\\= \frac{0.36 -0.3}{\sqrt{\frac{0.21}{50}}}\\\\= \frac{0.06}{\sqrt{0.0042}}\\\\= \frac{0.06}{0.064807407}\\\\= 0.9258201

3 0
3 years ago
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