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2 years ago

Due to gravity, objects weigh three times as much on Earth as they do on Mercury.

Mathematics

1 answer:

SpyIntel [72]2 years ago

6 0

Answer:

If an object on Mercury weighed 25lb, it would weigh 75lb on Earth

(25 * 3 = 75)

The answer is b

:")

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A woman walks a constant speed of 4.5km per hour. How long will it take her to walk 10 km? Use the formula d=st. write the answe

ryzh [129]

d =st

distance = speed * time

10 = 4.5 * t

divide each side by 4.5

10/4.5 = t

100/45 = t (can't have a decimal in a fraction so I multiply by 10/10)

divide top and bottom by 5

20/9

2 and 2/9 hours

to get minutes multiply 2/9 by 60

2/9 * 60

120/9

13 3/9

13 1/3 minutes

2 hours 13 1/3 minutes

to the nearest minutes

2 hours 13 minutes

4 0

3 years ago

Read 2 more answers

Im stuck on this one

nika2105 [10]

ABC is a right triangle, so by Pythagoras' theorem,

$AB^2+AC^2=BC^2\implies BC=\sqrt{4^2+9^2}=\sqrt{97}$

Then by the law of sines,

$\dfrac{\sin A}{BC}=\dfrac{\sin C}{AB}\iff\dfrac1{\sqrt{97}}=\dfrac{\sin C}4\implies\sin C=\dfrac4{\sqrt{97}}$

$\implies C=\sin^{-1}\dfrac4{\sqrt{97}}\approx24^\circ$

5 0

3 years ago

What is the perimeter of A ABC?

Advocard [28]

Answer: 11.4

Step-by-step explanation:

Using the distance formula,

$AC=\sqrt{(-3-1)^2 + (-1-2)^2}}=5\\\\AB=\sqrt{(-3-0)^2 +(-1-3)^2}=5\\\\BC=\sqrt{(1-0)^2 + (2-3)^2}=\sqrt{2} \approx 1.4\\\\\implies P \approx 5+5+1.4=\boxed{11.4}$

7 0

1 year ago

At the movie theatre, child admission is $5.20 and adult admission is $9.00 . On Saturday, 156 tickets were sold for a total sal

stiks02 [169]

We can solve this by using systems of equations.

Let's find our first formula, how much money was made using the tickets.

$5.20x + 9y = 1027.80$

Here x is how many child tickets we sold and y is how many adult tickets we sold. Now that we have defined that, we can make another formula for the total tickets sold!

$x + y = 156$ since we sold 156 tickets that could be any combination of child and adult tickets.

Let's solve this system. I'm going to use <em>substitution</em> so I'm going to take our second formula and subtract both sides by x to get $y = 156 - x$ .

Now I will plug this in the first equation for y to get You plug it in for y to get $5.20x + 9 (156-x) = 1027.8.$

From this you can solve for x to get $x = 99$ .

Since $x + y = 156$

$99 + y = 156$

$y = 57$

There were 99 child tickets and 57 adult tickets.

3 0

3 years ago

What is the square route of 49

Katen [24]

7.

One way to figure this out is to go from 2-10, and multiply them by them self each other to see what number works.

Another way is to use a calculator and the square root button.

Hope that helps!

8 0

2 years ago

Read 2 more answers