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KatRina [158]
3 years ago
14

A book store is having a 30% off sale, Diary of a Wimpy Kid books are now $6.30 each. What was the original price of the books?

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
3 0

Answer:

The original price of the books were <em>$9.</em>

Step-by-step explanation:

%100 - %30 = %70

%70 = 0.7

$6.30 ÷ 0.7 = $9

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Tisha and her academic team are working to go to state finals. They must have a certain number of points to advance. They have h
Westkost [7]

Answer:

b equals T minus a minus c minus d all over 3 ⇒ 3rd answer

Step-by-step explanation:

* Lets explain how to solve the problem

- Tisha and her academic team have had three local matches

# Assume that the points of the local matches are a , c , d

- They will attend a district match

- District match points count for three times the number of points

  than local matches do

# Assume that the points of the district match is b

- T is the total points they will earned in the four matches

∵ The points in the local matches are a , c , d

∵ The point in district mach is 3b

∴ T = a + c + d + 3b

* <u><em>Lets find b in terms of a , c , d , T</em></u>

∵ T = a + c + d + 3b

- Subtract a from both sides

∴ T - a = c + d + 3b

- Subtract c from both sides

∴ T - a - c = d + 3b

- Subtract d from both sides

∴ T - a - c - d = 3b

- Divide both sides by 3

∴ b=\frac{T-a-c-d}{3}

∴ b equals T minus a minus c minus d all over 3

4 0
3 years ago
Read 2 more answers
A 10 inch pizza cost $8 while a 1w inch pizza cost $10.50. Which ilsize is the better deal?
Ann [662]
What size is the second pizza supposed to be?
5 0
3 years ago
Hi can you pls help me pls yes do all
ruslelena [56]
Base x Height / 2 = Area of triangle.
6 0
2 years ago
The perimeter of a rectangular garage is 44 meters. the garage is 12 meters long. how wide is it?
wel
Hello!

To find the perimeter you do 2l + 2w.

l is length
w is width

put in the values we know

2(12) + 2w = 44

Combine like terms

24 + 2w = 44

Subtract 24 from both sides

2w = 20

Divide both sides by 2

w = 10

The answer is 10 meters

Hope this helps!
8 0
3 years ago
PLEASE HELP QUICK QUESTION EARN 20 POINTS
slamgirl [31]

Answer:  The correct option is (D) 36.

Step-by-step explanation:  We are given to find the value of 'y' that would make OP parallel to LN.

MO = 28 units, OL= 14 units, Pl = 18 units and MP = y = ?

From the figure, we have

if OP ║ LN, then we must have

∠MOP = ∠MLN

and

∠MPO = ∠MNL.

Since ∠M is common to both the triangles MOP and MLN, so by AAA postulate, we get

ΔMOP similar to ΔMLN.

We know that the corresponding sides of two similar triangles are proportional, so

\dfrac{MO}{ML}=\dfrac{MP}{MN}\\\\\\\Rightarrow \dfrac{MO}{MO+OL}=\dfrac{MP}{MP+PN}\\\\\\\Rightarrow \dfrac{28}{28+14}=\dfrac{y}{y+18}\\\\\\\Rightarrow \dfrac{28}{42}=\dfrac{y}{y+18}\\\\\\\Rightarrow \dfrac{2}{3}=\dfrac{y}{y+18}\\\\\\\Rightarrow 2y+36=3y\\\\\Rightarrow y=36.

Thus, the required value of 'y' is 36.

(D) is the correct option.

4 0
3 years ago
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