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3 years ago

What’s the combined like tens for x + 40 3x -17+2x -5

Mathematics

1 answer:

babymother [125]3 years ago

5 0

Answer:

3x and 2x

Step-by-step explanation:

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A city has two water towers. One tower holds 7.35 x 105 gallons of water and the other tower holds 9.78 x 105 gallons of water.

Sonja [21]

Answer:

Your correct answer is A) 1.713 x 106

Step-by-step explanation:

Hope this helps :) -Mark Brainiest Please :)

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2 years ago

Customers at Beans Coffee Shop have entered their name in a drawing for one of 4 gift cards. The gift cards each have a value of

Dimas [21]

Answer:

36,060,024 ways

Step-by-step explanation:

To choose the winner in this case, the order is very important because it determines who is chosen first out of the seventy-nine customers whose names were entered for the draw.

The above supports the reason Permutation will be used instead of Combination.

The total number of ways is given by:

⁷⁹P₄ = 79!/(79-4)!

= 79!/75!

= [79 x 78 x 77 x 76 x75!]/75!

= 79 x 78 x 77 x 76

= 36,060,024 ways

This implies that there are 36,060,024 ways the Bean Coffee Shop could choose the winners.

8 0

3 years ago

PLS PLS PLS I NEED HELP FAAAAAAAASSSSST GIVING BRAINLIEST TO QUICKEST CORRECT

ElenaW [278]

Answer:

c hope this helps

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

You have D dollars to buy fence to enclose a rectangular plot of land (see figure at right). The fence for the top and bottom co

alex41 [277]

The perimeter of the rectangular plot of land is given by the expression below

$P=2x+2y$

On the other hand, since the available money to buy fence is D dollars,

$\begin{gathered} D=4(2x)+3(2y) \\ \Rightarrow D=8x+6y \\ D\rightarrow\text{ constant} \end{gathered}$

Furthermore, the area of the enclosed land is given by

$A=xy$

Solving the second equation for x,

$\begin{gathered} D=8x+6y \\ \Rightarrow x=\frac{D-6y}{8} \end{gathered}$

Substituting into the equation for the area,

$\begin{gathered} A=(\frac{D-6y}{8})y \\ \Rightarrow A=\frac{D}{8}y-\frac{3}{4}y^2 \end{gathered}$

To find the maximum possible area, solve A'(y)=0, as shown below

$\begin{gathered} A^{\prime}(y)=0 \\ \Rightarrow\frac{D}{8}-\frac{3}{2}y=0 \\ \Rightarrow\frac{3}{2}y=\frac{D}{8} \\ \Rightarrow y=\frac{D}{12} \end{gathered}$

Therefore, the corresponding value of x is

$\begin{gathered} y=\frac{D}{12} \\ \Rightarrow x=\frac{D-6(\frac{D}{12})}{8}=\frac{D-\frac{D}{2}}{8}=\frac{D}{16} \end{gathered}$ <h2>Thus, the dimensions of the fence that maximize the area are x=D/16 and y=D/12.</h2><h2>As for the used money,</h2> $\begin{gathered} top,bottom:\frac{8D}{16}=\frac{D}{2} \\ Sides:\frac{6D}{12}=\frac{D}{2} \end{gathered}$ <h2>Half the money was used for the top and the bottom, while the other half was used for the sides.</h2>

7 0

8 months ago

En salón de clases hay 30 alumnos; el 40% son hombres y el 60% son mujeres ¿Cuántos hombres y mujeres hay en el salón de clases?

vodomira [7]

There are 30 students in the classroom; 40% are men and 60% are women. How many men and women are in the classroom?

40/100 = 2/5 60/100 = 3/5 30 ÷ 5 = 6 3 × 6 = 18 so 18 are women 2 × 6 = 12

so there are 12 men.

4 0

2 years ago