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Wittaler [7]
3 years ago
8

Pls help with number one

Mathematics
1 answer:
LenaWriter [7]3 years ago
6 0
A) You can drop hammer and a feather, both will reach ground at the same time ( it was actually done in Apollo mission)

b) i. Yes, it is similar to weightlessness experienced by astronauts

ii. The phenomenon of "weightlessness" occurs when there is no force of support on your body. When your body is effectively in "free fall" in roller coaster, accelerating downward at the acceleration of gravity, then you are not being supported.
Just like astronauts in space feel no force of support that we on earth feel due to gravity.
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What is the coefficient of the third term in the binomial expansion of (a + b)6? 1 15 20 90
Sholpan [36]

Answer:  15

Step-by-step explanation:

(r+1)th term of (a+b)^n is given by:-

T_{r+1}=\ ^nC_r(a)^{n-r}b^r

For (a+b)^6 , n= 6

T_3=T_{2+1}=\ ^6C_2(a)^{6-2}(b)^2\\\\

=\ \dfrac{6!}{4!2!}a^4b^2\ \ \ [^nC_r=\dfrac{n!}{r!(n-r)!}]\\\\=\dfrac{6\times5\times4!}{4!\times2}a^4b^2\\\\=3\times5a^4b^2\\\\ =15a^4b^2

Hence, the coefficient of the third term in the binomial expansion of  (a+b)^6 is 15.

3 0
3 years ago
Read 2 more answers
Emma buys and sells truck parts she bought two tires for $35 eachand later sold them for $65 each she bought three rims for $75
alexdok [17]

Answer:2X35=70 2X65=130 130-70=60   So 60 dollars profit for the two tires.

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5X4=20 5X15=75 75-20=55  So 55 dollars profit for the headlights.  

Total profit  60+183+55=298

  Step-by-step explanation:

 

5 0
2 years ago
Bdhxhdjjd helpppll & I’ll give you a star +15 points
ikadub [295]
X = -4

the slope is undefined as it only passes through the x-axis on -4.
6 0
3 years ago
What's the next step to substitution for this equation -4+y=-4
Marina86 [1]
Subtract the y then add the 4 to the other side so y=0
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Please help me I will give brainliest
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Answer:

1/9 is c -2/12 is a -0.1 is b

Step-by-step explanation:

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