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vlada-n [284]
3 years ago
14

When I run up a staircase, my stride can carry me up 1, 2, or 3 steps at a time. In how many ways can I run up a 9-step staircas

e (given that my last stride lands me on the 9th step)?
Mathematics
1 answer:
Romashka [77]3 years ago
6 0
1+1+1+1+1+1+1+1+1
3+3+3
2+1+2+1+2+1
2+1+3+1+2
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How to get the number 4 with the numbers 2,3,6,8 using all of them and you only use it once.
sergey [27]

Answer:

2 x 3 + 6 - 8

Step-by-step explanation:

2 x 3 = 6

6 + 6 = 12

12 - 8 = 4

:)

5 0
3 years ago
Please help!!! I don't get this
salantis [7]

Answer:

The last one

Step-by-step explanation:

Actually I think it's a correct answer .

4 0
3 years ago
What is the potential energy of a 500kg elevator that is 4.0m high from the floor?
rodikova [14]

Answer:

<h2>19,600 J</h2>

Step-by-step explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 9.8 m/s²

We have

PE = 500 × 9.8 × 4

We have the final answer as

<h3>19,600 J</h3>

Hope this helps you

6 0
2 years ago
Please can someone explain how to work out this
wariber [46]

Answer:

T = 4B + 10C

Step-by-step explanation:

Since there are 4 doughnuts in a bag then there are 4B doughnuts in B bags

Since there are 10 doughnuts in a carton then there are 10C doughnuts in C cartons, thus summing the two quantities gives

T = 4B + 10C

6 0
3 years ago
Rewrite the equation to isolate the variable.. df= g- 10 for d
Softa [21]
1) subtract 2 from both sides: y-2 = 9x +2 -2 y-2 = 9x 2) divide both sides by 9: (y-2)/9 = 9x/9 (y-2)/9=x

so it would be (g-10)/f
5 0
3 years ago
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