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3 years ago

Which of the following

Mathematics

2 answers:

Damm [24]3 years ago

4 0

<em>Answer:</em>

A: represents a function

<em>Explanation:</em>

Every other option, A, has two y for one x.

It can be a function if there is 1x for 1y.

<em>If this was helpful, please mark brainliest. Have a beautiful day!</em>

UkoKoshka [18]3 years ago

4 0

<h3>Answer: Choice C (upper right corner)</h3>

Choice A is not a function because x = 2 leads to more than one y value (y = 1 and y = 7 at the same time)

Choice B is not a function for similar reasoning. Here we have x = 1 lead to y = 2 and y = 5 simultaneously.

Choice D is also not a function because of the two points (5,2) and (5,4). This tells us we have x = 5 lead to y = 2 and y = 4 at the same time.

A function is only possible if you have any input lead to exactly one output. Choice C shows this. Note how it passes the vertical line test. It is impossible to draw a vertical line through more than two points on the function curve.

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Write the explicit formula for the arithmetic sequence.

Ratling [72]

Answer:

an = 9n -16

Step-by-step explanation:

First find the common difference, d

Take the second term and subtract the first

2 - (-7) = 2+7 = 9

We are adding 9 each time

Check 2+9 =11, check 11+9 = 20 check

The first term in the sequence is a1 so a1 =-7

an = a1 + d(n-1)

an = -7 + 9(n-1)

Distribute

an = -7 +9n-9

Combine like terms

an = 9n -16

3 0

3 years ago

A sub sandwich shop offers 22 toppings to choose from. How many ways could a person choose a 4-topping sandwich?

ddd [48]

There are 7,315 different combinations, thus, the correct option is c

<h3>How many combinations are there?</h3>

If we have a set of N elements, the number of different combinations of K elements (such that K ≤ N) of these N elements that we can make is:

$C(N, K) = \frac{N!}{(N - K)!K!}$

In this case we have K = 4 and N = 22, replacing that, we get:

$C(22, 4) = \frac{22!}{(22 - 4)!*4!} = \frac{22*21*20*19}{4*3*2*1} = 7,315$

So there are 7,315 different combinations, thus, the correct option is c.

If you want to learn more about combinations:

brainly.com/question/11732255

#SPJ1

4 0

1 year ago

14-12x+39x-18x=256-60x-657x

emmasim [6.3K]

Answer:

$\boxed{\bold{x=\frac{1}{3}}}$

Step-by-step explanation:

Combine Similar Elements: $\bold{-12x+39x-18x=9x}$

$\bold{14+9x=256-60x-657x}$

Combine Similar Elements: $\bold{-60x-657x=-717x}$

$\bold{14+9x=256-717x}$

Subtract 14 From Both Sides

$\bold{14+9x-14=256-717x-14}$

Simplify

$\bold{9x=-717x+242}$

Add $\bold{717x}$ To Both Sides

$\bold{9x+717x=-717x+242+717x}$

Simplify

$\bold{726x=242}$

Divide Both Sides By $\bold{726}$

$\bold{\frac{726x}{726}=\frac{242}{726}}$

Simplify

$\bold{x=\frac{1}{3}}$

4 0

3 years ago

Help solve this plsss fast!!!

exis [7]

Answer:

$2x + x + 5 = 6x - 3x + 5$

$3x + 5 = 3x + 5$

Here Both the side of equation are same ..

So, it have infinite solution....

8 0

2 years ago

The random variable is x represents the number of cars per household in a town of 1000 households, find the probability of rando

skad [1K]

125x2= 250 cars in a negborhood

4 0

2 years ago