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3 years ago

How many different arrangements of letters can be formed if the first letter must be W or K (repeats of letters are allowed)?

Mathematics

1 answer:

Tanya [424]3 years ago

6 0

Answer:

This can vary. Are we doing 4 letter words, 5 letter, etc?

Step-by-step explanation:

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3 days after picking apples, a family had 100 apples left. After 6 days, 76 apples were left. Assuming a linear function, write

fredd [130]

Answer:

a(t) = -8t + 124

Step-by-step explanation:

The number of apples left 3 days after picking them is given by the following equation:

$a(t) = mt + b$

3 days after picking apples, a family had 100 apples left.

This means that $a(3) = 100$

$100 = 3m + b$

$3m + b = 100$

$b = 100 - 3m$

After 6 days, 76 apples were left.

So a(6) = 76. Then

$76 = 6m + b$

Since b = 100 - 3m

$76 = 6m + 100 - 3m$

$3m = -24$

$m = \frac{-24}{3}$

$m = -8$

$b = 100 - 3m = 100 - 3*(-8) = 124$

a(t) = -8t + 124.

5 0

3 years ago

Pls can someone help me witht his

ludmilkaskok [199]

Answer:

c=3

m=5

Step-by-step explanation:

c=3 ( c is the intersection with y intercept)

m=5 (Through (y2-y1)/(x2-x1))

8 0

3 years ago

A model rocket is launched with an initial upward velocity of 126 ft/s. The rocket's height h (in feet) after 1 seconds is given

Vlad [161]

Step-by-step explanation:

f(t) = -16t² + 126t

for what values of t did this function deliver 50 ft of height ?

50 = -16t² + 126t

-16t² + 126t - 50 = 0

the general solution to such a squared equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

x = t

a = -16

b = 126

c = -50

t = (-126 ± sqrt(126² - 4×-16×-50))/(2×-16) =

= (-126 ± sqrt(15876 - 3200))/-32 =

= (-126 ± sqrt(12676))/-32 =

= (-126 ± 112.5877436...)/-32

t1 = (-126 + 112.5877436...)/-32 = -13.41225644.../-32 =

= 0.419133014... ≈ 0.42 seconds

t2 = (-126 - 112.5877436...)/-32 = -238.5877436.../-32 =

= 7.455866986... ≈ 7.46 seconds

so, this means, right after launch the ticket reaches 50ft (from below) after 0.42 seconds, and then, when it falls back down, it will reach 50ft again (this time from above) after 7.46 seconds of flight time.

3 0

2 years ago

a scale drawing of an automobile has a scale of 1 inch= 1/2 foot. The actual width of the car is 8 feet. What is the width on th

Trava [24]

Answer:

16 inches

Step-by-step explanation:

8 x 2 = 16

7 0

3 years ago

Timothy bought 10 cookies for $5.00 let x represent the number of cookies purchased and let y represent the total cost. graph th

Soloha48 [4]

We are given that cost of 10 cookies = $5.

Let us find the cost of one cookie.

Cost of one cookie = 5/10 = $0.5.

Let us assume number of cookies purchased = x cookies.

And total cost of x number of cookies = y.

Therefore,

Cost of x cookies at the rate $0.5 each cookie = 0.5x

Therefore, cost equation would be

y=0.5x.

For 0 number of cookies there would be 0 cost.

So, first coordinate would be (0,0) and we are given 10 cookies cost = $5.00.

Therefore, second coordinate would be (10,5).

Plotting (0,0) and (10,5) coordinates on the graph and jointing the points to draw a line.

The drawn line represents the proportional relationship.

3 0

3 years ago

How many different arrangements of letters can be formed if the first letter must be W or K​ (repeats of letters are​ allowed)?

How many different arrangements of letters can be formed if the first letter must be W or K (repeats of letters are allowed)?