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Over [174]
3 years ago
14

Why does 225.60 × 0.25 equal 56

Mathematics
2 answers:
Angelina_Jolie [31]3 years ago
3 0
It equals that because when you multiply a whole number by a decimal then the answer will always be smaller then the whole number.
Nataliya [291]3 years ago
3 0
Well first of all, 225.6 * 0.25 does NOT equal 56. It equal 56.4
Second of all, even if it did equal 56... our number system has been defined so that 225.6 * 0.25 just works out to 56.4... there's not really a reason it does equal 56.4
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The numbers of points that a player must accumulate to reach the next level of a video
ludmilkaskok [199]

Answer:

a_n=125×20^(n-1)

Step-by-step explanation:

a_n=x×y^(n-1)

a_3=50000=x×y^2

a_5=20000000=x×y^4

y^2=20000000/50000=400

y=20;x=125

3 0
2 years ago
I just need a starter to help me on this. Thanks:)
zhenek [66]
I could help. So mark days as the X value and hours as the Y value
so for the days(x) start with 1 and put in the hours(y) 24 the for the second column in the days(x) box put 2 and in the hours(y) put 48 then continue to at 12 to the hours(y) and 1 to the days(x)
5 0
3 years ago
A box contains 500 apples. 32% are rotten. How many rotten apples are there?
ziro4ka [17]
Lets find 32% of 500.

32/100 = .32

.32 * 500 = 160

Answer: 160 apples are rotten. 
6 0
3 years ago
Read 2 more answers
A group of employees is stranded on top of a 120 feet building because a fire occurred. Your goal is to throw a rope from a 60 f
Paul [167]

Step-by-step explanation:

-16t² + 64t + 60 = 120

this is a quadratic equation, and its points of f(t) = 0 can be calculated. there are usual 2 such solutions for a quadratic equation.

so, we need to bring it to a form that ends in "= 0".

-16t² + 64t - 60 = 0

that is also the same as

-4t² + 16t - 15 = 0

the formula for the solutions of such a quadratic equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

a = -4

b = 16

c = -15

so,

t = (-16 ± sqrt(256 - 4×-4×-15))/(2×-4) =

= (-16 ± sqrt(256 - 240))/-8 =

= (-16 ± sqrt(16))/-8 = (-16 ± 4)/-8

t1 = (-16 + 4)/-8 = -12/-8 = 3/2

t2 = (-16 - 4)/-8 = -20/-8 = 5/2

so, it depends on what the unit of time t is. let's assume seconds.

therefore, the rope will reach the top of the building while going up after 3/2 = 1 1/2 = 1.5 seconds.

and then, as the shot rope makes a curve and comes back down again (that is why we have 2 solutions : the rope will reach the height of 120ft during its flight path twice : once while still going up, and once when coming back down again) it will be at the height of the top of the building after 5/2 = 2 1/2 = 2.5 seconds.

so, it depends if the people there can grab it at the first chance, and if the path of the rope would allow them to grab it also again on its way back down. this we don't know.

I therefore guess, that your teacher is aiming for the first solution.

4 0
2 years ago
How much of a circle does a 100-degree angle turn through? The answers for the question are 1, 100/180, 50/360, and 100/360. Whi
const2013 [10]

Answer:

D

Step-by-step explanation:

The answer is D because  a circle has at least a 360 degree and a 180 is a half circle.

5 0
2 years ago
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