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3 years ago

NEED HELP ASAP ITS DUE IN 1 HOUR!!! PLEASEEE HELP!!! IF YOU ANSWER RIGHT I'LL MARK YOU BRAINLIEST!!

Mathematics

1 answer:

Pani-rosa [81]3 years ago

4 0

Answer:

f(n) = -11 + 22(n - 1)

f(1) is your initial value.

f(1) = -11 + 22(1 - 1)

f(1) = -11

------------------------------------------------------------

f(2) = -11 + 22(2 - 1) = 11

f(3) = -11 + 22(3 - 1) = 33

f(4) = -11 + 22(4 - 1) = 55

f(n - 1) is just a notation for the previous term

Using the equation f(n) = f(n - 1) + _______ :

f(2) = f(1) + ??? = 11

f(3) = f(2) + ??? = 33

f(4) = f(3) + ??? = 55

f(2) = -11 + ??? = 11

f(3) = 11 + ??? = 33

f(4) = 33 + ??? = 55

f(2) = -11 + 22 = 11

f(3) = 11 + 22 = 33

f(4) = 33 + 22 = 55

∴ f(n) = f(n - 1) + 22

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one number is less than a second number. twice the secind number is less 16 less than 4 times the first. find the smaller of two

bulgar [2K]

Answer:

The smaller number is 11

Step-by-step explanation:

The question is

One number is 3 less than a second number. Twice the second number is 16 less than 4 times the first. Find the smaller of two numbers

Let

x and y the numbers

x=y-3 ----> equation A

2y=4x-16 ----> equation B

Substitute equation A in equation B and solve for y

2y=4(y-3)-16

2y=4y-12-16

4y-2y=12+16

2y=28

y=14

x=14-3=11

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4 years ago

It takes 154 cubes with side lengths of 12 inch to fill a rectangular prism.

tekilochka [14]

Answer:

266,112

Step-by-step explanation:

This is because 154 X (12 X 12 X 12) this is because 12 on each cube side would all be multiplied together. one twelve for lengh, the other for height, and the other for width

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4 years ago

-3(x+8)-12=62-24 solve

Juli2301 [7.4K]

Answer:

First we chose one side to solve.

I am doing the one on the left first.

so -3x+-24-12

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Now we do the other side

62-24 is

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3 years ago

Scale model of skyscraper is 4.2 feet tall. When finished, skyscraper will be 525 meters tall. What scale was used to make model

bazaltina [42]

Answer:

1 : 140

Step-by-step explanation:

The scale used to make the model of height 4.2 feet = 1.28016m of a skyscraper (a very tall building) of height 525m is given as:

1.28016/525

= 1 : 410.156

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8 0

3 years ago

Two skateboarders, Ron and Bob, are traveling in opposite directions.Ton travels at 8 feet per second and bob travels at 10 feet

omeli [17]

Time taken before they are 2640 feet is 146.67 seconds

Solution:

The distance is given by formula:

$distance = speed \times time$

Ton travels at 8 feet per second

Let us assume, time taken = t

speed = 8 feet per second

Then, distance is given as:

Distance covered by Ton = 8t

Bob travels at 10 feet per second

Then, distance is given as:

Distance covered by Bob = 10t

How long will it take before they are 2640 feet

Which means,

Distance covered by Ton + Distance covered by Bob = 2640

$8t + 10t = 2640\\\\18t = 2640\\\\Divide\ both\ sides\ of\ equation\ by\ 18\\\\t = 146.67$

Thus time taken before they are 2640 feet is 146.67 seconds

<h3>Method 2:</h3>

Since trains are moving in opposite directions, their speeds must be added

speed = 8 + 10 = 18 feet per second

Given distance = 2640 feet

Therefore, time taken is:

$time = \frac{distance}{speed}\\\\time = \frac{2640}{18} = 146.67 \text{ second }$

Thus time taken before they are 2640 feet is 146.67 seconds

4 0

4 years ago