2 years ago

Ms. Federman graded 5 papers in 40 minutes. At this rate, how many minutes will it take her to grade 30 papers?

Mathematics

1 answer:

Ksivusya [100]2 years ago

4 0

Answer:

240 minutes

Step-by-step explanation:

If it's 40 minutes for just 5 papers, we need to figure how many minutes it would take to grade just 1. So you have to divide 40 by 5 which is 8. Then 8 time 30 which is 240.

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Marina86 [1]

I hope this helps you find the answer you're looking for

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2 years ago

Please help me with this.

OLga [1]

Swapping rows alters the sign of the determinant:

$\begin{vmatrix} x & y & z \\ -8 & 2 & -12 \\ u & v & w \end{vmatrix} = - \begin{vmatrix} x & y & z \\ u & v & w \\ -8 & 2 & -12 \end{vmatrix}$

Multiplying a single row by a scalar scales the determinant by the same amount:

$\begin{vmatrix} x & y & z \\ u & v & w \\ -8 & 2 & -12 \end{vmatrix} = -2 \begin{vmatrix} x & y & z \\ u & v & w \\ 4 & -1 & 6 \end{vmatrix}$

Then

$\begin{vmatrix} x & y & z \\ -8 & 2 & -12 \\ u & v & w \end{vmatrix} = -(-2) \begin{vmatrix} x & y & z \\ u & v & w \\ 4 & -1 & 6 \end{vmatrix} = 2\times(-6) = \boxed{-12}$

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1 year ago

A customer is late paying their renewal registration fee. The renewal registration fee is $142.16 and the late fee is 63% of the

Andre45 [30]

$124.56 because if you have 63% you change it to a decimal so it is not .63 and you multiply it by 146.16 and then add the 35 you get 124.56

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3 years ago

Help Plzz Which section of the function is increasing? ОА ОВ ОС OD

Rama09 [41]

Answer: A

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2 years ago

Is a triangle with angle measures 34 62 and 83 possible

zysi [14]

angles must add up to 180

so 34+62+83

but 34+62+83=179

and that is less than 180

so no it is not possible

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2 years ago