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
Vesnalui [34]
3 years ago
15

Laura has a step of 50cm She walks along by taking two steps forward and one step back. What is the least number of steps counti

ng forward and backwards step, she takes to reach a step 20m away? ~Thanks - don't know how to solve :(

Mathematics
2 answers:
emmasim [6.3K]3 years ago
4 0
I wrote the answer somewhere else and it wouldn’t let me copy and paste so here’s the screenshot

Vilka [71]3 years ago
3 0

Answer:

The least number of steps she takes to reach 20 m is 118 steps

Step-by-step explanation:

For Laura, the length of a walking step = 50 cm = 0.5 m

The repeating number of steps she takes = Two steps forward one step backwards

The number of forward steps it would take for her to reach 20 m = (20 m)/(0.5 m) = 40 steps

Given that she always takes two steps forward and one step backwards, we have;

The number of steps forward every three steps = 2 step forward + (-1) step (backward)

The number of steps forward every three steps = 2 - 1 = 1 step forward

To reach 39 steps forward, she would need 39 × 3 =  117 steps

To get to the 40 steps she needs just a step forward, making the total number of steps to reach 40 steps = 117 + 1 = 118 steps

Therefore, the least number of steps she takes to reach 20 m = 118 steps.

You might be interested in
If you got 5 dogs and 7 cats but one got eaten from both of them. How much do you have left.
Talja [164]
4 & 6 cause one of both of them got eaten
4 0
3 years ago
Select the comparison that is correct. (2 are right) A eighty-one tenths > 8.27 B Six and seventy-nine thousandths 50.453 D 3
madreJ [45]

Answer:

A

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Dr. Burger rides his bike to work in the mornings. Usually, he leaves his house at 8:20 and gets to the office at 9:00 riding at
Vika [28.1K]

Answer:

40 mph

Step-by-step explanation:

40 mins to bike usually, which means he bikes 10 miles. He needs to bike at a minimum of 10 miles in 15 mins, which translates to 40 miles in an hour.

P.S. He is going to surely be late.

8 0
2 years ago
I will give brainliest to simplest explanation! There are 2 Senators from each of 50 states. We wish to make a 3-Senator committ
Alika [10]

Answer:

117,600 ways

Step-by-step explanation:

This problem can be solved using fundamental principle of counting , according to which , if there are m different things and n different things,

then there m*n ways to combine.

Example: if there 5 shirts and 3 ties,

then number of ways in which different combination shirt and tie can be worn is

5*3 = 15 ways.

____________________________________

In the problem,\

number of states is 50,

let those states be

A1, A2, A3, A4 ......A50

in each state there are 2 senate

Condition

3-Senator committee in which no two members are from the same state.

then

first member can be chosen from any of the 50 state,

hence first member can be chosen in 50 ways

for simplicity lets take state A1, you can choose any one you wish

second member cannot be from state A1, then number of state left = 49

second member can be chosen from  any of 49 state left

hence second member can be chosen in 49 ways

for simplicity lets take state A2,

Third member cannot be from state A1 and A2, then number of state left = 48

Third member can be chosen from  any of 48 state left

hence Third member can be chosen in 48 ways

for simplicity lets take state A3,

Hence no. of ways of choosing  3-Senator committee be formed such that no two Senators are from the same state = 50*49*48 = 117,600 ways

8 0
3 years ago
3^x = 27^a+b and a^2-b^2/(a-b)=5 What is x?
Colt1911 [192]
Your answer should be 3x-x+2=4 hope this helps..
4 0
3 years ago
Other questions:
  • The population of Riverdale is 6,735 what is the value of 7 in the number 6,735?
    15·2 answers
  • A catering service offers lasagna and chicken Parmesan. Each pan serves 24 people. Right in equation to represent the number of
    10·2 answers
  • Mrs. Summer's third grade class is putting on a play. If she has 13 1/8 yards of fabric, and each student needs 7/8 of a yard fo
    14·2 answers
  • Write two equivalent fractions
    12·2 answers
  • The red graph (1) is the graph of f(x) = log(x). Describe the transformation of the blue function (2) and write the equation of
    11·1 answer
  • Marya wants to factor the polynomial 36x^3 – 22x^2 – 144x. Which term can she add to the polynomial that would not change its gr
    10·2 answers
  • Form an identity using -5x+9=9_
    15·1 answer
  • A Web music store offers two versions of a popular song. The size of the standard version is 2.3 megabytes (MB). The size of the
    9·1 answer
  • Please help me solve
    7·1 answer
  • Which unit would a doctor use to measure the volume of a patient’s eye drops?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!