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aleksklad [387]
3 years ago
8

Justine purchased computer software for $5,200. With a down payment of $1,000, she wa

Mathematics
1 answer:
Zanzabum3 years ago
7 0

Answer:

The semi annual payment is $4144.95

Step-by-step explanation:

Given as :

The price of computer software = $5,200

The down payment amount = $1000

So, The rest amount after down payment = $5,200 - $1,000 = $4,200

Now, The principal amount of finance = p = $4,200

The rate of interest = r = 12%

The time period of loan = t = 6 years

Let The Amount after 6 years = $A

<u>Now, From compounded method</u>

Amount = Principal × (1+\dfrac{\textrm rate}{ 100})^{ \textrm time }

Or, A = p  × (1+\dfrac{\textrm r}{ 100})^{ \textrm t }

Or, A = $4,200 × (1+\dfrac{\textrm 12}{100})^{ \textrm 6 }

Or, A = $4,200 × (1.12)^{6}

Or, A = $4,200 × 1.9738

∴  A = $8289.9

So, The semi annual payment = \dfrac{\textrm Amount}{2}

Or, The semi annual payment = \dfrac{\textrm 8289.9}{2}

∴ The semi annual payment = $4144.95

Hence, The semi annual payment is $4144.95 Answer

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A central angle of a circle measures 1.5 radians. If the radius of the circle is 3 cm, what is the area of the related sector?
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Answer:

Option B. 6.75\ cm^{2}

Step-by-step explanation:

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\frac{9 \pi}{2\pi}\frac{cm^{2}}{radians} =\frac{x}{1.5}\frac{cm^{2}}{radians}\\ \\x=9*1.5/2\\ \\x= 6.75\ cm^{2}

7 0
3 years ago
A sum of Rs.750 is in the form of denominations of Rs.50 and Rs.100. If the number of 100-rupee notes is twice the number of 50-
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5 0
3 years ago
The diameters of bolts produced in a machine shop are normally distributed with a mean of 5.65 millimeters and a standard deviat
nexus9112 [7]

Answer:

Two diameters that separate the top 4% and the bottom 4% are 5.77 and 5.53 respectively.

Step-by-step explanation:

We are given that the diameters of bolts produced in a machine shop are normally distributed with a mean of 5.65 millimeters and a standard deviation of 0.07 millimeters.

<em>Let X = diameters of bolts produced in a machine shop</em>

So, X ~ N(\mu=5.65,\sigma^{2} = 0.07^{2})

The z score probability distribution is given by;

         Z = \frac{X-\mu}{\sigma} ~ N(0,1)

where, \mu = population mean

            \sigma = standard deviation

<u>Now, we have to find the two diameters that separate the top 4% and the bottom 4%.</u>

  • Firstly, Probability that the diameter separate the top 4% is given by;

        P(X > x) = 0.04

        P( \frac{X-\mu}{\sigma} > \frac{x-5.65}{0.07} ) = 0.04

        P(Z > \frac{x-5.65}{0.07} ) = 0.04

<em>So, the critical value of x in z table which separate the top 4% is given as 1.7507, which means;</em>

                 \frac{x-5.65}{0.07}  = 1.7507

              x-5.65 = 0.07 \times 1.7507

                         x = 5.65 + 0.122549 = 5.77

  • Secondly, Probability that the diameter separate the bottom 4% is given by;

        P(X < x) = 0.04

        P( \frac{X-\mu}{\sigma} < \frac{x-5.65}{0.07} ) = 0.04

        P(Z < \frac{x-5.65}{0.07} ) = 0.04

<em>So, the critical value of x in z table which separate the bottom 4% is given as -1.7507, which means;</em>

                 \frac{x-5.65}{0.07}  = -1.7507

              x-5.65 = 0.07 \times (-1.7507)

                         x = 5.65 - 0.122549 = 5.53

Therefore, the two diameters that separate the top 4% and the bottom 4% are 5.77 and 5.53 respectively.

4 0
3 years ago
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