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2 years ago

HELP

Mathematics

1 answer:

Amiraneli [1.4K]2 years ago

6 0

Answer:

volume of a cone = 1/3*(πr²h)

Step-by-step explanation:

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Two seniors one from each government class are randomly selected to travel to washington dc. wes is in a class of 18 students an

Fantom [35]

Hey there!

$\dfrac{1}{18} \times \dfrac{1}{20} \\ = \dfrac{1}{360}$

Answer is 1/360, or in decimal form 0.0028.

Hope this helps. - M

8 0

4 years ago

Chau's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Chau $5.50 per pound, and type B

Anettt [7]

84 pounds of Type B coffee is used

Solution:

Let "x" be the pounds of type A coffee

Let "y" be the pounds of type B coffee

Cost per pound of type A = $ 5.50

Cost per pound of Type B = $ 4.20

This month, Chau made 143 pounds of the blend

x + y = 143

x = 143 - y -------- eqn 1

For a total cost of $677.30. Thus we frame a equation as:

pounds of type A coffee x Cost per pound of type A + pounds of type B coffee x Cost per pound of Type B = 677.30

$x \times 5.50 + y \times 4.20 = 677.30\\\\5.5x + 4.2y = 677.30 -------- eqn 2$

Let us solve eqn 1 and eqn 2

Substitute eqn 1 in eqn 2

$5.5(143-y) +4.2y = 677.30\\\\786.5 -5.5y + 4.2y = 677.30\\\\5.5y - 4.2y = 786.5 - 677.30\\\\1.3y = 109.2\\\\Divide\ both\ sides\ by\ 1.3\\\\y = 84$

Thus 84 pounds of Type B coffee is used

8 0

3 years ago

Convert 4 3/5 cups to pints.

IceJOKER [234]

Answer:

2.3 pints

Step-by-step explanation:

4.6 cups = 2.3 pints

8 0

3 years ago

Does (f - g)(x) result in the same function as (g - f)(x)? Explain.

Alina [70]

No because for example (4-2)(x) is not the same as (2-4)(x). It would be negative

7 0

3 years ago

Please, please help me! I don't even know where to start with solving this...

zvonat [6]

Factorize the left hand side and equate the factors to zero.

Then, use the notation that : sec x = 1/cosx and csc x = 1/sinx

Result: x = ± π3 + 2πk , k∈Z

3 0

4 years ago