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ZanzabumX [31]
3 years ago
8

While conducting an inventory in their bicycle shop, the owner noticed the number of bicycles is 2 fewer than 10 times the numbe

r of tricycles. They also know there are 410 wheels on all the bicycles and tricycles in the store. Write and solve a system of equations to find the number of bicycles in the store.
Mathematics
2 answers:
suter [353]3 years ago
8 0
Answer:
The number of bicycles in the store is 178\ bicycles178 bicycles
Step-by-step explanation:
Let
x------> the number of bicycles
y-----> the number of tricycles
we know that
The bicycles has two wheels and the tricycles has three wheels
so
2x+3y=4102x+3y=410 ------> equation A
x=10y-2x=10y−2 ------> equation B
substitute equation B in equation A and solve for y
2(10y-2)+3y=4102(10y−2)+3y=410
20y-4+3y=41020y−4+3y=410
23y=41423y=414
y=18\ tricyclesy=18 tricycles
Find the value of x
x=10(18)-2=178\ bicyclesx=10(18)−2=178 bicycles
mr Goodwill [35]3 years ago
3 0

Answer:

The number of bicycles in the store is 178\ bicycles

Step-by-step explanation:

Let

x------> the number of bicycles

y-----> the number of tricycles

we know that

The bicycles has two wheels and the tricycles has three wheels

so

2x+3y=410 ------> equation A

x=10y-2 ------> equation B

substitute equation B in equation A and solve for y

2(10y-2)+3y=410

20y-4+3y=410

23y=414

y=18\ tricycles

Find the value of x

x=10(18)-2=178\ bicycles

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Radius of 1 button = r = 3x

Fabric required to cover 1 button = Area of the circle

= \pi r^{2}

= \pi (3x)^{2}

= 9\pi x^{2}

Total number of buttons = x

Fabric required to cover 1 button = 9\pi x^{2}  

Fabric required to cover x buttons = x(9\pi x^{2} )

=9\pi x^{3}

Hence, fabric required to cover x buttons =9\pi x^{3}  sq. units


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3 years ago
Write 25/20 as a percentage
kolezko [41]
125% my guys im sorry if its wrong :(
5 0
2 years ago
Read 2 more answers
From a random sample of 58 businesses, it is found that the mean time the owner spends on administrative issues each week is 21.
zzz [600]

Answer: (20.86, 22.52)

Step-by-step explanation:

Formula to find the confidence interval for population mean :-

\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}

, where \overline{x} = sample mean.

z*= critical z-value

n= sample size.

\sigma = Population standard deviation.

By considering the given question , we have

\overline{x}= 21.69

\sigma=3.23

n= 58

Using z-table, the critical z-value for 95% confidence = z* = 1.96

Then, 95% confidence interval for the amount of time spent on administrative issues will be :

21.69\pm (1.96)\dfrac{3.23}{\sqrt{58}}

=21.69\pm (1.96)\dfrac{1.7}{7.61577}

=21.69\pm (1.96)(0.223221)

\approx21.69\pm0.83

=(21.69-0.83,\ 21.69+0.83)=(20.86,\ 22.52)

Hence, the 95% confidence interval for the amount of time spent on administrative issues = (20.86, 22.52)

7 0
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Mr majors ordered six hot dogs and a bucket of popcorn at the concession stand. If the popcorn was 3.20 and the total was 18.20
maw [93]
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6 0
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A number is equal to twice a smaller number plus 3. Yhe same number is equal to twice the sum of smaller number and 1. How many
allsm [11]

Answer:

There is no solution to the problem

Step-by-step explanation:

In order to find the solutions to the problem you can write the situation in an algebraic form.

You have that a number is equal to twice a smaller number plus 3. This can be written as follow:

x=2y+3      (1)

where x is the number and y is the smaller number

Furthermore, the same number x is equal to twice the sum of the smaller number and 1, which can be written as follow:

x=2(y+1)     (2)

To find the solution you equal the equation (1) with (2), and you solve for y:

2y+3=2y+1

3=1

You obtain an inconsistency, hence, the situation of the problem does not have solution

5 0
3 years ago
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