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Sergeeva-Olga [200]

2 years ago

7

The cost of a CD at Ernesto's Music Emporium is $12, including tax. Brian has a $100 gift card from Ernesto's. What is his balan

ce after he buys 4 CDs?

1 answer:

Allushta [10]2 years ago

6 0

$52 because 4 times 12 equals 48 so 100 minus 48 equals 52

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the cost of 5 oranges and 3 apples is 43 rupees and the cost of 2 oranges and 4 apples is 34 rupees. find the cost of an orange

liraira [26]

Answer: Orange = 5 rupee

Apple = 6 rupees

Step-by-step explanation:

Let the cost of an orange be x

Let the cost of an apple be y

We can form an equation from the question given which will be:

5x + 3y = 43 ......... i

2x + 4y = 34 ......... ii

Multiply equation i by 2

Multiply equation ii by 5

10x + 6y = 86 ........ iii

10x + 20y = 170 ..... iv

Subtract iii from iv

14y = 84

y = 84/14

y = 6

An apple cost 6 rupees

Since from equation ii

2x + 4y = 34

2x + 4(6) = 34

2x + 24 = 34

2x = 34 - 24

2x = 10

x = 10/2

x = 5

An orange cost 5 rupee

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5. Which value of x satisfies the equation 4x - 17 = 47?

wariber [46]

Answer:

The answer is C so X is=16

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Find the discount rate when the original price is $103.00 and the amount of the discount is $30.90

Sati [7]

Its 30% because if you take 103 put it in the calculator and divide by 100 you get 1.03 and multiply that time 30 you get 30.9 thats how you find percent

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Lyra and Donna are testing the two-way radios they built for their high school science project. Lyra goes to the top of a buildi

nata0808 [166]

This question is far easier to understand if we draw it out. I've included an image attachment to help show the relationships of the measurements. As we can see from the image, their positioning helps form a triangle that we can use the Pythagorean Theorem to find the connection range.
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m_a_m_a [10]

Linear correlation.

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