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zhenek [66]
3 years ago
6

If something was $45 and it increased to $56, what is the percent change?

Mathematics
1 answer:
olga_2 [115]3 years ago
6 0
56-45=11
11÷45=0.2445
0.2445×100=24.45
=24.5
=25% increase
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Eight beads are strung in a necklace with a clasp, how many ways<br> can the beads be arranged?
Elena L [17]

Answer:

Number of total arrangement of beads = 2,520

Step-by-step explanation:

Given:

Number of beads in necklace = 8 beads

Find:

Number of total arrangement of beads

Computation:

Changing beads is a cyclic permutation,

So,

Formula to find number of total arrangement in cyclic permutation

(n-1)!/2 , where n = number of item

So,

(n-1)!/2

Number of total arrangement of beads = (8-1)!/2

Number of total arrangement of beads = (7)!/2

Number of total arrangement of beads = (7 x 6 x 5 x 4 x 3 x 2 x 1) / 2

Number of total arrangement of beads = 5,040 / 2

Number of total arrangement of beads = 2,520

7 0
3 years ago
The stopping distance of a car is modeled by the function d = 0.05r(r + 2) where d is the stopping distance of the car measured
adell [148]

Answer:

The car was moving approximately at a speed of 37.74 miles per hour.

Step-by-step explanation:

We are given the following in the question:

The stopping distance of a car is given by

d = 0.05r(r + 2)

where d is the stopping distance in feet and r is speed of the car in miles per hour.

The stopping distance is 75 feet, we have to find the speed of the car,

Putting d = 75 in the equation, we get,

75 = 0.05r(r + 2)\\r^2 + 2r = 1500\\r^2 + 2r-1500 = 0\\\\r =\dfrac{-2\pm \sqrt{4-(4)(1)(-1500)}}{2}\\\\r\approx -39.74,37.74

Thus, the car was moving approximately at a speed of 37.74 miles per hour.

3 0
3 years ago
One exterior angle of a regular pentagon has a measure of (2x). What is the value of x?
777dan777 [17]

x = 36

pentagon has 5 sides . The formula n/360 gives you the measure of each angle in a regular polygon. So in this case n ( stands for number of sides) is 5. Sum of exterior angle of a any polygon is 360. The measure of 1 exterior angle is given. It is 2x.

Now using ALGEBRAIC EXPRESSIONS we can write it as 5/360 = 2x

which is 72=2x

which is 72/2 = x

which is 36 = x

so x = 36.

6 0
4 years ago
In a certain year the population of a country reached 321 million. The overall birth rate was births per​ 1000, and the overall
kkurt [141]

Answer:

Then it would stay at 321 million

Step-by-step explanation:

if the birth and death rate is both 1000 then nothing will change. Population wise.

4 0
3 years ago
A pitcher contains 1.75 liters another contains 1800 milliters of apple juice which one has more juice
Strike441 [17]
1liter=1000ml
1.75l=1750ml

1800ml>1750ml


1800ml is bigger

4 0
3 years ago
Read 2 more answers
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