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olchik [2.2K]
4 years ago
15

What is

frac{2}{5} (6-5p)" align="absmiddle" class="latex-formula"> thanks
Mathematics
1 answer:
weeeeeb [17]4 years ago
8 0
Answer:
12/5 - 2p

Explanation:

2/5(6 - 5p)
2 • 6/5 + 2 • -5p
12/5 - 10p/5
12/5 - 2p
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Randy can buy 6 gallons of gas for $18 or 7 gallons of gas for $21. how much do you think he would pay for 8 gallons of gas?
lesantik [10]

18/6 = 3 dollars per gallon

8 x 3 = 24

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answer is C

6 0
3 years ago
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A particle starts at the point P=(−5,−1,3) when t=0 and moves along a straight line toward Q=(−6,−6,8) at a speed of 9 cm/sec. L
navik [9.2K]

Answer:

Step-by-step explanation:

Given

Particle moves from P\ (-5,-1,3)\ to\ Q\ (-6,-6,8)

speed of particle is v=9\ cm/s

Unit vector in the direction of vector \vec{PQ} is given by

\hat{n}=\frac{\vec{Q}-\vec{P}}{|\vec{Q}-\vec{P}|}

\hat{n}=\frac{-}{\sqrt{(-1)^2+(-5)^2+(5)^2}}

\hat{n}=\frac{}{\sqrt{1+25+25}}

Now Position of Particle at any time is given by

\vec{r(t)}=velocity\cdot time\cdot direction

\vec{r(t)}=9\cdot t\cdot \frac{}{\sqrt{1+25+25}}

Parametric vector equation is given by

x=\frac{-9t}{\sqrt{51}}

y=\frac{-45t}{\sqrt{51}}

z=\frac{45t}{\sqrt{51}}

6 0
4 years ago
In a group of 120 pupils , 80 can play drums and 25 play piano . How many pupils can play both instruments if there are 3 pupils
soldier1979 [14.2K]

Answer:

  • 12 pupils

Step-by-step explanation:

<u>Number of pupils can play either instrument:</u>

  • 120 - 3 = 117

<u>Number of those can play both:</u>

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3 0
3 years ago
Select two equations equivalent to 6x = 42 *
Softa [21]

Step-by-step explanation:

answer is 7

hope it will be helpful

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4 years ago
Please help me
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Answer:

Option 1, 2, and 4 are correct. Option 3 is incorrect.

6 0
3 years ago
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