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3 years ago

A cafeteria sells 30 drinks every 15 minutes.predict how many drinks the cafeteria sells every hour

Mathematics

2 answers:

timofeeve [1]3 years ago

8 0

15 times 4 is 60 minutes. 30 times 4 is 120 drinks.

maria [59]3 years ago

7 0

60 minutes in an hour 60 divided by 15= 4 so multiply 30 times 4= 120 they sell 120 drinks every hour

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Which function models the area of a rectangle with side lengths of 2x - 4 units and x + 1 units?

aalyn [17]

Answer:

Area of rectangle, $f(x)=2x^2-2x-4$ .

Step-by-step explanation:

We are given with side lengths of a rectangle are (2x-4) units and (x+1) units. It is required to find the area of rectangle.

The area of a rectangle is equal to the product of its length and breadth. It is given by :

$A=L\times B$

Let us consider, L = (2x-4) units and B = (x+1) units

Plugging the side lengths in above formula:

$A=(2x-4)\times (x+1)$

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2 years ago

The midpoint of AB is M (2,0). If the coordinates of A are, (-3, 3), what are the coordinates of B?

gregori [183]

Given:

M is the midpoint of AB.

M(2,0) and A(-3, 3).

To find:

The coordinates of point B.

Solution:

Midpoint formula:

$Midpoint=\left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right)$

Let the coordinates of point B are (a,b). Then, using the midpoint formula, we get

$(2,0)=\left(\dfrac{-3+a}{2},\dfrac{3+b}{2}\right)$

On comparing both sides, we get

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And,

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$3+b=0$

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Therefore, the coordinates of point B are (7,-3).

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lyudmila [28]

Answer:

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Step-by-step explanation:

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i = √-1

Imaginary numbers can be especially useful when trying to find the square root of a real negative number such as -16. Normally we cannot find the square root of -16 but through the use of imaginary numbers we can:

√-16 = 4i

~Hope this helps!~

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Answer:

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Step-by-step explanation:

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