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kolbaska11 [484]

2 years ago

8

Vicky has 11 keys, and there are 11 different lockers, and the 11 keys to open the 11 lockers are mixed together. How many times

at most will Vicky have to try to match these 11 lockers with the right keys?

1 answer:

Ugo [173]2 years ago

6 0

Answer:

There is no way to predict this because it could take her anywhere from 11 to 66 tries

You might be interested in

Chris has a large collection of hockey cards and wants to get of rid of some of his hockey cards. He gives 2 cards away on day 1

WINSTONCH [101]

<span>We define

day--------------------------X
hockey cards away ------------f(X)
</span><span>He gives 2 cards away ----------------on day 1----------f(X)=2 X=1
</span>He gives 4 cards away ----------------on day 2----------f(X)=4 X=2
He gives 8 cards away ----------------on day 3----------f(X)=8 X=3
the sequence of cards away 2,4,8,16,32,64,128,256,512,1024

f(x) = 2**(x)

The answers are

D <span>Each day corresponds to a unique amount of hockey cards in this sequence.</span>
And B <span>The graph of this sequence would pass the vertical line test.

Each element of the Domain (X = day), relates to a single value of f(x) = number of hockey cards

That is, every value of X must have only one corresponding value of f(x)
(One value of y, for each input X)

This can also be checked by using the vertical line test.

If we plot f(x) and we draw vertical lines in the curve, we can verify that at every input the line intersects only one point of f(x)</span>

8 0

4 years ago

Write an equation in point-slope form of the line through point P(-4, 7) with slope -4.

IrinaVladis [17]

Answer:

y - 7 = -4(x + 4)

Step-by-step explanation:

You want to find the equation for a line that passes through the point (-4,7) and has a slope of -4.

First of all, remember what the equation of a line is:

y = mx+b

Where:

m is the slope, and

b is the y-intercept

To start, you know what m is; it's just the slope, which you said was -4. So you can right away fill in the equation for a line somewhat to read:

y=-4x+b.

Now, what about b, the y-intercept?

To find b, think about what your (x,y) point means:

(-4,7). When x of the line is -4, y of the line must be 7.

Because you said the line passes through this point, right?

Now, look at our line's equation so far: . b is what we want, the -4 is already set and x and y are just two "free variables" sitting there. We can plug anything we want in for x and y here, but we want the equation for the line that specfically passes through the the point (-4,7).

So, why not plug in for x the number -4 and for y the number 7? This will allow us to solve for b for the particular line that passes through the point you gave!.

(-4,7). y=mx+b or 7=-4 × -4+b, or solving for b: b=7-(-4)(-4). b=-9.

6 0

3 years ago

Read 2 more answers

Y=f(x)=-5x find f(x) when x=3

BartSMP [9]

Answer:

Step-by-step explanation:

y=f(x)=-5x

since x=3 just replace x with 3

y=f(x)=-5(3)

y=f(x)=-15

8 0

3 years ago

At a football match, there were 250 more men than women. The number of children was twice the number of women and the number of

zlopas [31]

Answer:

450 people were at the match

Step-by-step explanation:

So let's make equation :

W = women

M = Men

C = Children

First equation :

M = W + 250

Second equation :

C = 2W

Third equation :

M = 2(W+C)

Let's substitute the second equation into the third :

M = 2(W + 2W)

M = 2W + 4W

M = 6W

Let's substitute this equation into the first one :

6W = W + 250

5W = 250

W = 50

Now we know that that there were 50 women at the match and can substitute this value for the first equation and then the second :

M = 50 + 250

M = 300

This means that there must have been 300 men at the match.

C = 2(50)

C = 100

This means that there must have been 100 children at the match.

Adding all values together gives us :

50 + 300 + 100 =

450 people were at the match

Hope this helped and have a good day

5 0

2 years ago

15% tip to 100 cents why does this make a unit less factor?

evablogger [386]

15% and the corresponding 0.15 is by necessity unit-less; it's just a multiplier. If you run up a $1 bill and wish to tip 15%, multiply $1 by 0.15, obtaining $0.15.
Then the total due would be $1 plus $0.15, or $1.15.

Note that $0.15
-------- = 0.15 is unit-less
$1

4 0

3 years ago