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VMariaS [17]
2 years ago
15

A box contains 12 balls of which 5 are red, and 7 are blue. If 4 balls are drawn from the box, in how many ways can this be done

if 1 is red and 3 are blue?
Mathematics
1 answer:
mash [69]2 years ago
6 0

Answer:

175 ways

Step-by-step explanation:

5 balls are red, and 7 balls  are blue making a total of 12 balls.

4 balls are drawn from the box,

1 ball is red and 3  balls are blue out of the 4 drawn from the box.

We have to choose 1 ball from 5 red balls and 3 blue balls from 7 blue balls.

Since the order is not essential we use combinations to find out

5C1 * 7C3= 5*35 = 175 ways

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The function D(t) defines a traveler's distance from home, in miles, as a function of time, in hours. Which times and distances
Zigmanuir [339]

Answer:

Following are the responses to this question:

Step-by-step explanation:

This question required the choices, so the correct option can be described as following:

In option a: In 2 hours, the passenger is 725 miles away.

In option b: The length is stable at 3 hours, 880 miles.

In option c: The overall distance to home is 1,062.5 miles after 6 hours.

5 0
2 years ago
If x2-y2 = 10 and x+y = 5, what is the value of x-y? 2-5?
netineya [11]

Answer:

x-y=2

I don't get why they are asking you what is 2-5. That seems super basic compared to the other question it is with. Since 5-2=3, then 2-5 or -5+2=-3.

Step-by-step explanation:

We are going to use identity x^2-y^2=(x-y)(x+y)

x^2-y^2=10

(x-y)(x+y)=10

(x-y)(5)=10

Since (2)(5)=10, this implies x-y=2.

8 0
2 years ago
Please help me with this please no bots
iogann1982 [59]

Answer:

Step-by-step explanation:

Factors

Multiples

Fractions

Denominator

Numerator

3 0
2 years ago
Read 2 more answers
Why is (-3,6] a better answer than (-3,6)
Pani-rosa [81]

(-3, 6) includes all numbers between -3 and 6 but it does not include -3 and 6.

when you put square parentheses you include the number on the edge

so if an anwser includes all numbers between -3 and 6 and the number 6 it's correct to write (-3,6]

7 0
1 year ago
What is the axis of symmetry of h(x) = –2x2 + 12x – 3?
Ksivusya [100]

h(x) = -2x2 + 12x - 3?

The axis of symmetry is :

x = 3

Hope this helps.

Welcome to Brainly!,

Davinia.

8 0
3 years ago
Read 2 more answers
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