1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zalisa [80]
3 years ago
9

Hello, how can I do this exercise the help is appreciated

Mathematics
1 answer:
Semenov [28]3 years ago
7 0

Answer:

5, 8, 11, 14, 17,....

f(n) = 5+3n where n is the number of steps after the first two. 7 steps is 20 faces.

Step-by-step explanation:

A sequence is a list of numbers that are related. The first number in the sequence is 5 since the first part of the stairs has 5 faces (5 squares, the dark don't count). Every time you add a "stair" you add 2 blocks - one underneath to support and one as the step. This adds 3 faces. So 5 becomes 8. Repeat and 8 becomes 11. You add 3 faces each time. So the sequence is

5, 8, 11, 14, 17,....

This is a constant pattern of adding 3 each time after the initial start. So we can write a rule. We start with 5 + 3(each stair step). So if the cube is 7 stairs high, that is 5 more repetitions of adding blocks after the start (remember the start has 2 steps already). So 5 + 3(5) = 20. 7 steps high will have 20 faces.

You might be interested in
4(x+6)≤−56 it says Solve the inequality.
vlabodo [156]

\tt \: 4(x + 6) \leqslant  - 56

Divide both sides of the inequality by 4

\sf \: x + 6 \leqslant  - 14

Move the constant to the right-hand side and change its sign

\bf \: x \leqslant  - 14 - 6

Calculate the difference

\rm \: x \leqslant  - 20

And we are done solving!!~

8 0
3 years ago
Read 2 more answers
-13d-8=-8-6d equation
olga nikolaevna [1]
Well, for -6d to equal -13d, d would have to be 0 to satisfy this equation
4 0
3 years ago
Read 2 more answers
What’s the area and perimeter?
Angelina_Jolie [31]

Answer:

•12

Step-by-step explanation:

fInd Little bit at end by pythogotous and find are of shaded the find areo of non shaded and take away with shaded triangle

4 0
2 years ago
Anthony purchased a T-shirt for $14.95 and a pair of pants for $21.35.
Mashutka [201]

Answer:

Anthony gave the sales clerk $40

Step-by-step explanation:

7 0
3 years ago
1. Find the distance between each pair of points. Round your answer to
zlopas [31]

Step-by-step explanation:

\sqrt{(3 - ( - 4))^{2}  + ( - 7 - 6)^{2} }  \\  =  \sqrt{(3 + 4)^{2}  +  {( - 13)}^{2} }  \\  =   \sqrt{ 49 + 169}  \\   = \sqrt{218} \\  = 14.7648

7 0
3 years ago
Other questions:
  • The germination rate is the rate at which plants begin to grow after the seed is planted.
    6·1 answer
  • Find the value of 24ft and 9ft
    5·1 answer
  • If the length of FH is 18units what is the value of x
    14·1 answer
  • The cost of a long-distance phone call from Boston to London is defined by f(t) = 0.85(t -1) + 1.50, where the cost is $1.50 for
    7·1 answer
  • 80 decreased by 3 times a number is 56 what’s the number
    13·2 answers
  • A square pyramid has base area 64 square centimeters. The surface area of this pyramid is 224 square centimeters. Find the heigh
    14·1 answer
  • DON’T MIND BLUE CRACKED/GLITCH
    8·1 answer
  • I need help please help
    9·1 answer
  • Rachel is arranging 12 cans of food in a row on a shelf. She has 8 cans of beets, 3 cans of corn, and 1 can of beans. In how man
    6·1 answer
  • You write (5-2)÷n to represent the phrase 2 less than 5 divided by a number n. Your friend writes (5÷n)-2. Are these both reason
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!