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2 years ago

13

five whole numbers are written in order 4,6,x,y,10 the mean and median of the five numbers are the same work out the values of x

and y

1 answer:

Alexandra [31]2 years ago

6 0

Answer:

6 and 7

Step-by-step explanation:

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HELLLLPPPPPPPPPPPPPPPPPPPPPPPPPPP

Natali5045456 [20]

Answer:

3/1

Step-by-step explanation:

5 0

2 years ago

The formula for the surface area of a sphere is A=4pi r*2, where r is the length of the radius. Find the surface area of the sph

g100num [7]

Answer:

Step-by-step explanation:

area=4×22/7×14²=4×22×28=2464 units²

8 0

2 years ago

Marco purchased a large box of comic books for $300. He gave 15 of the comic books to his brother and then sold the rest on an i

Yuri [45]

Answer: There are 75 books.

Price of each book = $4.

Step-by-step explanation:

Let x = Number of books in the box.

Then as per given,

Cost of x books = $300

Cost of one book = $\$(\dfrac{300}x)$

Books left after giving 15 of them = x-15

Selling price of (x-15) books= $330

Selling price of one book = $\$(\dfrac{330}{x-15})$

Profit on each book= $1.50

Profit = selling price - cost price

$\Rightarrow 1.50=\dfrac{330}{x-15}-\dfrac{300}{x}\\\\\Rightarrow\ 1.50=\dfrac{330(x)-300(x-15)}{x(x-15)}\\\\\Rightarrow\ 1.50=\dfrac{330x-300x+4500}{x^2-15x}\\\\\Rightarrow\ 1.50(x^2-15x)=30x+4500\\\\\Rightarrow\ 1.50x^2-22.5x=30x+4500\\\\\Rightarrow\ 1.50x^2-52.5x-4500=0\\\\\Rightarrow\ 1.50x^2-52.5x-4500=0\\\\\Rightarrow\ x^2-25x-3000=0\ \ [\text{divide by 1.5}]$

$\Rightarrow (x+40)(x-75)=0\\\\\Rightarrow\ x=-40,75$

Number of books cannot be negative.

So, there are 75 books.

Price of each book = $\dfrac{300}{75}=\$4$

So price of each book = $4.

5 0

2 years ago

Is (-3, 1) a solution to this system of inequalities?

Maksim231197 [3]

Answer:

No

Step-by-step explanation:

5(-3)= -15

5(1)= 5

-15+5=-10

-10 is greater than -19 not less than or equal too.

Hope this helps!

5 0

1 year ago

you flip a coin and then select one ball from a box that contains 6 balls number 1,2,3,4,5,6. how many oitcomes are in the sampl

ehidna [41]

There are 12 outcomes. The coin can land on either heads or tails, and then you can extract any number from 1 to 6 from the box. So, the outcomes are

Heads, 1
Heads, 2
Heads, 3
Heads, 4
Heads, 5
Heads, 6
Tails, 1
Tails, 2
Tails, 3
Tails, 4
Tails, 5
Tails, 6

7 0

2 years ago