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2 years ago

7

In a school canteen there are 7 choices of drink, 3 choices for the main meal and 2 choices for the pudding. If I have one of ea

ch, how many possible selections are there?

1 answer:

irinina [24]2 years ago

7 0

Answer:

42

Step-by-step explanation:

All you have to do is multiply all the choices together so 7x3 is 21x2 is 42. Or you can make a tree diagram.

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Please and thankyou (:

den301095 [7]

Let's evaluate the ratio test:

$\dfrac{a_n}{a_{n-1}}=\dfrac{3^{n+1}}{3n+1}\cdot\dfrac{3(n-1)+1}{3^n}=\dfrac{3\cdot3^n}{3n+1}\cdot\dfrac{3n-2}{3^n} = \dfrac{9n-6}{3n+1}$

The limit as $n \to\infty$ of this quantity is 3, which is more than 1. So, the series diverges.

6 0

3 years ago

Do the points A(1,3) B(4,2) C(-2,4) lie on the same line? Explain your answer. Show all work.

Jet001 [13]

We can see that

$Slope\ of\ AB=Slope\ of\ BC=Slope\ of\ AC$

The given points are on same line.

Further explanation:

There are two methods to find if the given points are on same line

The slope method: If the points are on same line the slopes of two pairs of points will be same
Area of triangle method

Given points are:

A(1,3) B(4,2) C(-2,4)

We will find the slope of AB, BC, and AC

So,

$m=\frac{y_2-y_1}{x_2-x_1}$

$Slope\ of\ AB=\frac{2-3}{4-1} \\=-\frac{1}{3}$

$Slope\ of\ BC=\frac{4-2}{-2-4}\\ =\frac{2}{-6}\\=-\frac{1}{3}$

$Slope\ of\ AC= \frac{4-3}{-2-1} \\=-\frac{1}{3}$

We can see that

$Slope\ of\ AB=Slope\ of\ BC=Slope\ of\ AC$

The given points are on same line.

Keywords: Slope, Co linear points

Learn more about slope at:

#LearnwithBrainly

3 0

3 years ago

Adam wanted to play his video games. His mother told him that he needed to finish his homework, clean out the dishwasher, and cl

Deffense [45]

Answer:

148 minutes = 2h 28 min

Step-by-step explanation:

48min+(25+75mins)=48+100=148

5 0

2 years ago

Help I don’t get it.......

amm1812

Answer

Step-by-step explanation:

mathaway will help !

6 0

2 years ago

A 2-column table with 4 rows. Column 1 is labeled Store with entries A, B, C, D. Column 2 is labeled Advertised Bread Prices wit

attashe74 [19]

answer is C

Step-by-step explanation:

i got it right and it looked like no one would help you so

6 0

3 years ago