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Lera25 [3.4K]
3 years ago
12

Maria and Edwin have $23.00 each to spend at a book fair, where all students receive a 25% discount. They both want to purchase

a copy of the same book, which normally sells for $26.50 plus 10% sales tax. To check if she has enough to purchase the book, Maria takes 25% of $26.50 and subtracts that amount from the normal price. She takes 10% of the discounted selling price and adds it back to find the purchase amount. Edwin takes 75% of the normal purchase price and then computes 110% of the reduced price. Is Maria correct? Is Edwin correct? Do they have enough money to purchase the book? Explain your answer using complete sentences, and show your work.
Help Me
@SignoraPenguino
Mathematics
1 answer:
nirvana33 [79]3 years ago
3 0
Think about the same time I was answering this type of question
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Elias writes the numbers 1 through 20 on separate slips of paper. There are 16 white slips of paper and four yellow slips of pap
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3 years ago
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4 years ago
The perimeter of a rectangle A is 540 inches. The ratio of the lengths ofa large and small rectangle is 7:3. Find the perimeter
gulaghasi [49]

The ratio between the lengths of 2 rectangles is the same between their perimeters

l_1\colon l_2=P_1\colon P_2

Since the ratio between the length of rectangle A and the length of rectangle B is 7: 3, then

The ratio between the perimeter of rectangle A to the perimeter of rectangle B is 7: 3 too

\begin{gathered} l_A\colon l_B=7\colon3 \\ P_A\colon P_B=7\colon3 \end{gathered}

Since the perimeter of rectangle A is 540, then

540\colon P_B=7\colon3

We will write them as a fraction

\frac{540}{P_B}=\frac{7}{3}

By using the cross multiplication

\begin{gathered} P_B\times7=540\times3 \\ 7P_B=1620 \end{gathered}

Divide both sides by 7

\begin{gathered} \frac{7P_B}{7}=\frac{1620}{7} \\ P_B=231.4285714 \end{gathered}

Round it to the nearest tenth

P_B=231.4\text{ inches}

The perimeter of the smaller rectangle B is 231.4 inches

7 0
1 year ago
Heeeelp me Asp need this
gavmur [86]

Answer:

False; True; True

Step-by-step explanation:

If the radius is 4, the area of the circle is

pi*r*r = pi * 4 * 4 = 16pi; The second statement is true.

The entire circle's "angle" is 2pi, so the sector takes (2pi/3) / 2pi of it all, equal to 1/3 of the entire circle - hence the area of the sector is

16pi * 1/3 = 16pi/3; the first statement is false

The length of the entire circle is 2 * pi * r = 2 * pi * 4 = 8pi

The sector is 1/3 of that, so 8pi/3; the third statement is true.

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3 years ago
A B C Or D? Look at picture
Damm [24]
The radical form is A
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3 years ago
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