What's 21v+8-12v-7+3t-1t

Mathematics

1 answer:

kow [346]3 years ago

8 0

21v + 8 - 12v - 7 + 3t - 1t = (combine like terms)

9v + 2t + 1 <==

You might be interested in

A box contains four red balls and eight black balls. Two balls are randomly chosen from the box, and are not

Trava [24]

Answer:

the probabilities will be following

P(B) = 8/12

P(RIB) = 4/11

P(BNR)= 8/33

probability that the first ball chosen is black and the second ball chosen is red is about = 24 %

4 0

3 years ago

A comet travels along a parabolic path around the Sun. The Sun is the focus of the path. When the comet is at the vertex of the

AlladinOne [14]

Remember that for a function of the form $y=a x^{2}$ , a parabola, the focus will be: $(0, \frac{1}{4a} )$ .
We know that the vertex of the parabola is (0,0), and the sun is the focus of the parabola; we also know that the focus is in the positive y-axis and when the comet is as its vertex, the distance between them is 60'000.000 km; therefore the focus of our parabola is (0, 60'000.000).
Now that we know the focus, we can find $a$ using the focus of the parabola:
$\frac{1}{4a} =60'000.000$
$1=(60'000.000)(4a)$
$1=240'000.000a$
$a= \frac{1}{240'000.000}$

Now, the only thing left is replacing the value of $a$ in our equation $y=a x^{2}$ :
$y=( \frac{1}{240'000.000)} ) x^{2}$
$y= \frac{ x^{2} }{240'000.000}$

We can conclude that the equation that represents the path of the comet is $y= \frac{ x^{2} }{240'000.000}$