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3 years ago

The formula gives the maximum height y of a projectile launched straight up, given acceleration a and initial velocity v.

Mathematics

2 answers:

Andreyy893 years ago

7 0

We have the following expression:
y = (v ^ 2) / (2 * a)
We must clear v from the equation.
For this, we follow the following steps:
Step 1)
Pass 2 * a to multiply:
2 * a * y = v ^ 2
Step 2)
Square root on both sides:
root (2 * a * y) = v
Step 3)
Rewrite expression:
v = root (2 * a * y)
Answer:
v = root (2 * a * y)
(option 1)

MariettaO [177]3 years ago

5 0

The first option is the correct answer.

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Help and explain explain !!!!!!!!!!

tigry1 [53]

Answer:

$x=-1\text{ or }x=11$

Step-by-step explanation:

For $a=|b|$ , we have two cases:

$\begin{cases}a=b,\\a=-b\end{cases}$

Therefore, for $18=|15-3x|$ , we have the following cases:

$\begin{cases}18=15-3x,\\18=-(15-3x)\end{cases}$

Solving, we have:

$\begin{cases}18=15-3x, -3x=3, x=\boxed{-1},\\18=-(15-3x), 18=-15+3x, 33=3x, x=\boxed{11}\end{cases}$ .

Therefore,

$\implies \boxed{x=-1\text{ or }x=11}$

3 0

2 years ago

Carla draws two rectangles.

Strike441 [17]

Answer:

A rectangle with a width of 5 inches and a length of 7 inches.

A rectangle with a width of 4 inches and a length of 6 inches

Step-by-step explanation:

8 0

2 years ago

Can someone help me wit #4 plzz

iris [78.8K]

Answer: It represents the area of the two circular sides ("lids")

Explanation:

Imagine you made a cylinder out of 3 pieces of paper. The cylinder can be decomposed into two circular shapes (radius r) and one rectangular piece with two side lengths: one is "h", the other has to be long enough to go around each of the disks, so it has to be 2*pi*r long.

So the term 2*pi*r*h is the area of the rectangular piece and pi*r^2 is the area of each of the "lids" Since there are two of those, the term 2*pi*r^2 represents the area of the bottom and top lids.

7 0

3 years ago

Which is equivalent to log 2 18 = x-1 18^2 = x-1 2^18 =x-1 18^х-1=2 2^x-1= 18

uysha [10]

Answer:

it the second one

Step-by-step explanation:

b/c 18times it self 2in x-1 is just talking it a way bone

6 0

2 years ago

Suppose g (x) is increasing and concave up everywhere and g(A)=7, gprime(A)=13, h=.01

rewona [7]

First we need a point (x,y) : (A, 7)
Now slope (from f'(A)) = 15 
Next, the equation (using point slope formula) 

y - 7 = 15 (x -A) 
y = 15 (x - A) + 7 

Now in the x spot we put 'A-.01' 
y = 15 ( A - .01 - A) +7= 15(-.01) +7 = -.15+ 7 = 6.85
hope this helps

8 0

3 years ago