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Iteru [2.4K]
2 years ago
6

Newton buys a guitar for $46 and a guitar amplifier. The amplifier costs $1.54 more then 1.26 times the cost of the guitar. How

much does the amplifier cost?
Mathematics
1 answer:
valentina_108 [34]2 years ago
8 0

Answer:

The cost of the amplifier=$26.33

Step-by-step explanation:

Step 1: Derive expression for amplifier cost and guitar cost

guitar cost=g

amplifier cost=a, but since its costs 1.54 more than 1.26 times the cost of the guitar, a=(1.26×g)+1.54=1.26 g+1.54

amplifier cost=a=1.26 g+1.54

Step 2: Derive the expression for the total cost of guitar and amplifier

Total cost of guitar and amplifier=Cost of guitar+cost of amplifier

where;

Cost of guitar=g

Cost of amplifier=1.26g+1.54

Total cost of guitar and amplifier=46

replacing;

46=g+1.26g+1.54

46=2.26g+1.54

2.26g=46-1.54

2.26g=44.46

g=44.46/2.26

g=19.67

a=(1.26×19.67)+1.54=26.33

The cost of the amplifier=$26.33

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2 years ago
A customer borrowed $2000 and then a further $1000 both repayable in 12 months. What should he have saved if he had taken out on
Neporo4naja [7]

Answer:

a. $60

Step-by-step explanation:  

We will use simple interest formula to solve our given problem.

A=P(1+rt), where

A= Amount after t years.

P= Principal amount.

r= Interest rate in decimal form.      

t= Time in years.

Let us find amount of loans repayable after 12 months for taking two amounts of $2000 and $1000.

As $2000 and $1000 are less than 2500, so the rate of loan will be 10%.

10\%=\frac{10}{100}=0.10

12 months = 1 year.

A=2000(1+0.10\times 1)

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A=2000(1.10)

A=2200

Now let us find amount repayable after 12 months for borrowing $1000.

A=1000(1+0.10\times 1)

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A=1000(1.10)

A=1100

Adding these amounts we will get total repayable amount after 12 months for borrowing $2000 and $1000 separately.

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Now let us find repayable amount after 12 months for taking 1 loan. As $3000 is between $2501 and $7500, so rate of loan will be 8%.

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6 0
2 years ago
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Answer:

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Step-by-step explanation:

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In this question:

74,250 car accidents. Of those, in 20,187, the driver was a female.

Based on this, what is the probability that a female driver was involved in an accident?

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27.19% probability that a female driver was involved in an accident

6 0
2 years ago
What is square root of the product of the number z and itself<br>​
dsp73

Answer:

\large\boxed{z}

Step-by-step explanation:

What is square root of the product of the number z and itself?

Break down into smaller parts

What is the product of the number z and itself?

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Now we can just add a \sqrt{} to the front of our equation to solve the problem.

\sqrt{z * z}

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