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anzhelika [568]
2 years ago
10

Eva bought a book that was on sale for 20% off the retail price. The retail price of the book was $12. What was the price Eva pa

id for the book?
Mathematics
1 answer:
sp2606 [1]2 years ago
7 0

Answer:

$2.4

Step-by-step explanation:

12×20/100

240/100

2.4

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Talia is packing a moving box. She has a square-framed poster with an area of 4 square feet. The cube-shaped box has a volume of
yan [13]

Answer:

Length of sides of poster = 2 Ft

Length of sides of box = 2.41 Ft

Since the box has a longer side than the poster, the poster will lie flat when placed in the box.

Step-by-step explanation:

In order to determine if the poster will lie flat in the box or not, we will determine the length of the sides of the poster and the box, if the length of the side of the square poster is smaller than that of the box, it will lie flat. This is calculated as follows:

Area of poster = 4 square feet

Area of poster =  (Length)²

4 = (Length)²

∴ Length = √(4)

Length of poster = 2 Ft

Volume of box = 14 cubic feet

Volume of box = (Length)³

14 = (Length)³

∴ Length = ∛(14)

Length = 2.41 Ft

∴ Length of sides of poster = 2 Ft

Length of sides of box = 2.41 Ft

Since the box has a longer side than the poster, the poster will lie flat when placed in the box.

3 0
3 years ago
7(2 + 3) − 4 · 2 2 <br><br> the second two is up in the air fyi
AfilCa [17]

Answer:

19

Step-by-step explanation:

7(<u>2 + 3</u>) − 4 · 2² ← like that right so

<u>parenthesis first add the numbers up↓</u>

7(5) - <u>4</u> · 2²

write number in exponential form↓

<u>7(5)</u> - 2²· 2²

multiply↓

35 - <u>2² · 2²</u>

calculate the product↓

35 - <u>2⁴</u>

evaluate the power↓

35-16

then subtract↓

19

7 0
2 years ago
Guys, please help me faster will receive a Brainliest award if you answer my 2 of the math questions with the best given answers
Zolol [24]

Answer:

<u><em>Question 10.</em></u>

Length of the side of the square = \sqrt{441} = 21

By Pythagoras' Theorem,

Hypotenuse = \sqrt{21^{2} + 20^{2} } (H > 0)

                     = 29 m

Ans: 29 m

<u><em>Question 11.</em></u>

By Pythagoras' Theorem,

Length of longer side of 42 km = 42- \sqrt{18^{2} - 15^{2} } (L > 0)

                                                                     = 32.050 km (5 s.f.)

By Pythagoras' Theorem,

Length of the unknown side = \sqrt{32.050^{2} + 15^{2}  } (L > 0)

                                               = 35.4 km (3 s.f.)

Ans: 35 km

<u><em /></u>

3 0
2 years ago
Factor Completely'''​
vekshin1

Answer:

4x^2(x-2)(x+6)

Step-by-step explanation:

Factor 4x^2

4x^2(x^2)+4x^2(4x)-4x^2(-12)

4x^2(x^2+4x-12)

4x^2(x-2)(x+6)

<em>good luck, hope this helps :)</em>

5 0
3 years ago
Find the area of the shaded reg
Neporo4naja [7]

Answer:

C DJ DJ DJ DJ to Yoo to dh DJ SF at cb CJ Yoo op BN CNN DJ DJ DJ Yoo DJ DJ go

4 0
2 years ago
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