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Alik [6]
3 years ago
7

Jamal bought a diamond ring at a 20% discount. He paid $2640 for the ring. Naomi bought a similar ring but was given a discount

of $924. What was the percentage discount given to Naomi?
Mathematics
1 answer:
Fudgin [204]3 years ago
7 0

Answer: 72%

Step-by-step explanation:

Set Jamal's original ring price = x

x - x(0.2) = 2640\\x(1-0.2)=2640\\x(0.8)=2640\\x=\frac{2640}{0.8}=3300

Jamal's original ring price = $3300

Set Naomi's discount = y

3300-3300(y)=924\\=3300(1-y)=924\\1-y=\frac{924}{3300} \\-y=\frac{924}{3300} -1\\y=1-\frac{924}{3300}=1-0.28=0.72

Naomi's discount is 0.72 = 72%

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Denise and Jacqueline are training for a swimming and running race.
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Answer:

Jacqueline runs at 6.25 minutes per mile

Step-by-step explanation:

Here we have that the total training time for Jacqueline = 54 minutes

The time for which Jacqueline swims = 30 minutes

Therefore, the time in which Jacqueline runs = 54 min. - 30 min. = 20 minutes

Therefore the equation for Jacqueline's speed = Distance/Time we have

Jacqueline's pace = 3.2 miles/20 minutes = 0.16 miles/minute

Therefore Jacqueline's pace = 0.16 miles/minute

The equation for Jacqueline's pace in miles/minute is presented as follows

Jacqueline's pace in miles/minute = Time of running/Distance

Jacqueline's pace in miles/minute  = 1/0.16 miles/minute = 6.25 minutes/mile.

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3 years ago
a suite is on sale for $368, which is 36 percent less than the regular price. what is the regular price?
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The answer is 895 I think
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Over what interval is the function in this graph increasing?
brilliants [131]

A function is increasing if it "points upwards".

Think that you have two inputs x_1 (think of them as being very close to each other). A function f is increasing if

f(x_1)

So, smaller input, smaller output.

So:

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  • In the second segment, the line is constant (it's horizontal). This means that even if you consider a larger input, the output reimains the same
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So, the function is increasing in the third segment, which is delimited by

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7 0
3 years ago
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vagabundo [1.1K]

Answer:

4\frac{3}{8} pounds of chicken

Step-by-step explanation:

To make the 7 a fraction we put a one under it. Then we multiple the tops of the two fractions together and the bottom two numbers of the fraction together:

\frac{7}{1} X \frac{5}{8} = \frac{35}{8}

Finally, we simplify the improper fraction into a mixed number:

4\frac{3}{8}

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Answer:

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Step-by-step explanation:

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