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2 years ago

Someone knows this one? help me please help help :(thank you so much

Mathematics

1 answer:

noname [10]2 years ago

5 0

Answer: d

Step-by-step explanation:

$KE=\dfrac{1}{2}mv^2\\\\\\\bigg(\dfrac{2}{m}\bigg)KE=\bigg(\dfrac{2}{m}\bigg)\dfrac{1}{2}mv^2\\\\\\\bigg(\dfrac{2}{m}\bigg)KE=v^2\\\\\\\sqrt{\bigg(\dfrac{2}{m}\bigg)KE}=\sqrt{v^2}\\\\\\\sqrt{\bigg(\dfrac{2}{m}\bigg)KE}=v$

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0.5 0.45 0.405 4.5 least to greatest

babymother [125]

0.405, 0.45 , 0.5 , 4.5 : Least to greatest!

5 0

2 years ago

2 1/2r + 1 + 2r = 9 1/10

GalinKa [24]

This should help you here are the steps of your problem :)

2*(1/2)*r+2*r+1 = 9*(1/10) // - 9*(1/10)

2*(1/2)*r+2*r-(9*(1/10))+1 = 0

2*(1/2)*r+2*r-9/10+1 = 0

3*r+1/10 = 0 // - 1/10

3*r = -1/10 // : 3

r = -1/10/3

r = -1/30

So your answer would be 1/30

4 0

3 years ago

An ice cream store sells 28 flavors of ice cream. Determine the number of 4 dip sundaes.

katrin [286]

Answer:

$20,475\ ways$

Step-by-step explanation:

we know that

Combinations are a way to calculate the total outcomes of an event where order of the outcomes does not matter.

To calculate combinations, we will use the formula

$C(n,r)=\frac{n!}{r!(n-r)!}$

where

n represents the total number of items

r represents the number of items being chosen at a time.

In this problem

$n=28\\r=4$

substitute

$C(28,4)=\frac{28!}{4!(28-4)!}\\\\C(28,4)=\frac{28!}{4!(24)!}$

simplify

$C(28,4)=\frac{(28)(27)(26)(25)(24!)}{4!(24)!}$

$C(28,4)=\frac{(28)(27)(26)(25)}{(4)(3)(2)(1)}$

$C(28,4)=20,475\ ways$

5 0

2 years ago

Plss help mee answer my homework plss im begging u

vagabundo [1.1K]

Answer:

1.80 2.90 3. 135

Step-by-step explanation:

1. 80°

2. 90°

3. 135°

4 0

2 years ago

Read 2 more answers

HELPLSPLSPLPSLPSLPSL

babunello [35]

Answer:

25.5

Step-by-step explanation:

first find the area od the rectangle than the triangle.

to find the area count the number of squares and use A=b*h

than do the same for the triangle using A=.5*b*h

15=3*5

10.5=.5*3*7

10.5+15=25.5

3 0

2 years ago

Someone knows this one? help me please help help :(thank you so much​

Someone knows this one? help me please help help :(thank you so much