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2 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]2 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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Steven has some money if he spends nine dollars then he will have 3/5 of the amount he started with

Vesna [10]

Total money * fraction = part
$x* \frac{3}{5} =9 \\ ( \frac{5}{3}) * \frac{3x}{5} = 9* \frac{5}{3} \\ x= \frac{45}{3} =15$

5 0

2 years ago

Read 2 more answers

2) Which rectangle if translated 6 units right and 16 units down and the rotated 90° clockwise about the point (4, -11) will res

Veronika [31]

Answer:

the answer should be c

Step-by-step explanation:

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2 years ago

If the difference of two numbers is even then so is their sum.

Nutka1998 [239]

Answer and explanation:

Statement - If the difference of two numbers is even then so is their sum.

Let the two even numbers be '2m' and '2n' with m and n are integers.

The difference of two number is

$2m-2n=2(m-n)$

Now, The sum of the numbers is

$2m+2n=2(m+n)$

Let $m+n=k$ where k is an integer

Then, $2m+2n=2k$ which is also an even number as 2 is multiplied with it.

So, If the difference of two numbers is even then so is their sum.

For example -

Let two even number 2 and 4.

The difference is $4-2=2$ , 2 is even.

The sum is $4+2=6$ , 6 is even.

4 0

3 years ago

The back of Tom's property is a creek. Tom would like to enclose a rectangular area, using the creek as one side and fencing for

ICE Princess25 [194]

Answer:

76,050 ft²

Step-by-step explanation:

If the area must be rectangular, let L be the length of the side opposite to the creek, and S be the length of the remaining two sides.

The perimeter of the fencing and the area of the pasture are:

$780 = L+2S\\A= LS\\\\L=780-2S\\A=-2S^2+780S$

The value of S for which the derivate of the area function is zero is the length of S that maximizes the area of pasture:

$\frac{dA}{dS}=0=-4S+780\\S= 195\\L=780-(2*195)=390$

The maximum possible area is:

$A_{MAX}=390*195=76,050\ ft^2$

6 0

3 years ago

A cube of side 6 cm is painted on all its sides. If it is sliced into 1 cubic cm cubes, how many 1 cubic cm cubes will have exac

const2013 [10]

Answer:

162 cubes

Step-by-step explanation:

48 cubes will have 2 sides.

8 cubes will have 3 sides.

216-54 = 162

4 0

2 years ago