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3 years ago

It takes one student 8 hours to wash all of the cars at a school car wash. If 6

Mathematics

1 answer:

hoa [83]3 years ago

4 0

Answer:

C. 1.3 hours

Step-by-step explanation:

It takes one student 8 hours to wash all the cars.

It will take each of 6 students 6 times less to perform same task:

8/6 = 4/3 = 1.3 hours

So the correct choice is C. 1.3 hours

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Sveta_85 [38]

Answer:

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Step-by-step explanation:

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3 years ago

75c- 300 - 35 c =25c + 15c + 200

GarryVolchara [31]

Answer:

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3 years ago

Write a matrix equation for the given systems of equations.

REY [17]

Answer:

$\left[\begin{array}{ccc}2&-6&2\\0&3&-2\\0&2&2\end{array}\right] \left[\begin{array}{ccc}x\\y\\z\end{array}\right]= \left[\begin{array}{ccc}1\\-5\\-3\end{array}\right]$

Step-by-step explanation:

Given system of equations are

2x-6y-2z = 1

3y - 2z = -5

2y + 2z = -3

given

2 x - 6 y - 2 z = 1

0 x + 3 y - 2z = -5

0 x +2y + 2 z = - 3

The Matrix form of the given system of equations

A X = B

$\left[\begin{array}{ccc}2&-6&2\\0&3&-2\\0&2&2\end{array}\right] \left[\begin{array}{ccc}x\\y\\z\end{array}\right]= \left[\begin{array}{ccc}1\\-5\\-3\end{array}\right]$

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3 years ago

Evaluate [6+3(-2)]-6

bagirrra123 [75]

Answer: -6

Multiply 3 by -2 first =-6 inside brackets

Original 6 inside brackets plus -6 from performing multiplication problem inside the brackets equals 0, so you now have 0 minus the original -6 which equals -6 overall

Step-by-step explanation:

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3 years ago

Which best describe the graph of

Alla [95]

The answer is A) left 3, up 2

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3 years ago