Move the discount sign two places to the left and divide the regular price by that decimal. Then take that price and put it in the selling price and take the selling price and subctract that from the original price

8 0

3 years ago

Make r the subject of the formula: U=v+2t

bearhunter [10]

U=v+ 2t=
U/2t = r+2t/2t
=U/2t=r OR. r= U/2t

8 0

4 years ago

What is 1% of 3,000?

gladu [14]

Answer:

Step-by-step explanation:

As 1 percent is equal to 1/100

1/100 of 3000 (1/100 x 3000)

equals to...

3 0

3 years ago

Read 2 more answers

the initial vertical velocity of a rocket shot straight up is 42 meters per second. How long does it take for the rocket to retu

Snowcat [4.5K]

It takes 4.3 seconds for the rocket to return to earth.

The equation is:
$0=-9.8t^2+v_0t+h_0$
where -9.8m/sec² is the acceleration due to gravity, v₀ is the initial velocity, and h₀ is the initial height. We will go from the assumption that the rocket is launched from the ground, so h₀=0, and we are told that the initial velocity, v₀, is 42. This gives us:

$0=-9.8t^2+42t$

We will use the quadratic formula to solve this. The quadratic formula is:
$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

Plugging in our information we have:
$t=\frac{-42\pm \sqrt{42^2-4(-9.8)(0)}}{2(-9.8)}
\\
\\=\frac{-42\pm \sqrt{1764-0}}{-19.6}
\\
\\=\frac{-42\pm \sqrt{1764}}{-19.6}
\\
\\=\frac{-42\pm 42}{-19.6}=\frac{-42-42}{-19.6} \text{ or } \frac{-42+42}{-19.6}
\\
\\=\frac{-84}{-19.6}\text{ or }\frac{0}{-19.6}
\\
\\=4.3\text{ or }0$

x=0 is when the rocket is launched; x=4.3 is when the rocket lands.

8 0

4 years ago