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3 years ago

Qual será o tempo de queda se uma pedra cair de uma altura de 19,9 metros?

1 answer:

4 0

gt22=2ggt22=2g or 19.9m.

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A 3-D object made of 2 cm × 2 cm × 2 cm cubes is dipped in paint. . If the painted object is separated into individual cubes, th

joja [24]

Answer:

The answer is " $48 \ cm^2$ "

Step-by-step explanation:

Area of every face:

$A=bh\\\\$

$=2\times 2\\\\=4 \ cm^2\\$

count overlaps and times by 2:

So,

$\to 6 \times 2= 12$

There are 12 unpainted faces each face is $4 \ cm^2\\\\$

$\to 12 \times 4 \ cm^2\\\\\to 48 \ cm^2$

5 0

3 years ago

The amount of oil used by a ship traveling at a uniform speed varies jointly with the distance and the square of the speed. The

frosja888 [35]

Answer:

Step-by-step explanation:

Joint variation has the equation

y = kxz

k is the constant of variation and needs to be solved for using the initial conditions, then filled in later to another equation related to the given info to solve for something else. We are given y = amount of oil used, x = distance traveled, z-squared is the speed. Our equation looks like this, to be exact:

$y=kxz^2$

Filling in with the initial conditions:

$34=k(60)(20)^2$ which gives us the

k = .0014166667

Now we need to find the amount of oil used, y, under other circumstances, but this time we have our k.

$y=(.0014166667)(32)(23)^2$

which gives us that the amount of oil used, when rounded to the tenths,

y = 24.0 barrels

7 0

3 years ago

A restaurant sold 8 times as many salads as they sold steaks. if they sold 4 steaks, how many salads did they sell?

Mnenie [13.5K]

32. For every one salad it was 8 steaks, so if they sold 4 steaks, just multiply 4 by 8, where 8 represents the number of salads for every steak. The answer would be 32. Correct me if I'm wrong but that my answer.

7 0

3 years ago

The average speed of one airplane is 200 mph faster than that of an automobile. If the automobile starts at 3 a.m. and the airpl

jok3333 [9.3K]

Distance = 500 miles

Distance of automobile = 10r

r = 50

Distance = 10 x 50 = 500 miles

7 0

3 years ago

What is the maximum height of of Anna's golf ball? The equation is y=x−0.04x2.

elena-s [515]