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aksik [14]
3 years ago
12

Tom bought a radio on sale for 20% off for $68. What was the original cost of the radio?

Mathematics
2 answers:
krek1111 [17]3 years ago
3 0

Answer:

88 I believe

Step-by-step explanation:

ICE Princess25 [194]3 years ago
3 0

Answer:

$85

Step-by-step explanation:

20% is 1/5 of 100

68/4=17

68+17=85

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Question 1<br>3x-5 9-2x<br>Solve<br>3<br>2​
Nitella [24]

Answer:

X = 0.8

Step-by-step explanation:

reorder the terms by moving all terms that contain X to the left, and all the others to the right.

add 2X to both sides

Combine like terms

add (-5) to both sides

combine like terms

divide both sides by 5

3 0
3 years ago
(a+4)² - 3²<br> Factored out
uranmaximum [27]

Answer:

a =  - 7

a =  - 1

Step-by-step explanation:

(a+4) {}^{2}  - 3 {}^{2}  \\ a {}^{2}  + 8a + 16 - 9 \\ a {}^{2}  + 8a + 7 \\ a {}^{2}  + a + 7a + 7 \\ a(a + 1) + 7(a + 1) \\ (a + 7)(a + 1) \\ a + 7 = 0 \:  \:  \:  \: or \:  \:  \:  \: a + 1 = 0 \\ a =  - 7 \:  \:  \:  \: \:  \:  \:  \:  or \:  \:  \: a =  - 1

8 0
3 years ago
Let x=number of cds and y=number of dvds
Elis [28]
X + y = 40.....multiply by -4
4x + 6y = 180
-------------------
-4x - 4y = -160 (result of multiplying by -4)
4x + 6y = 180
------------------add
2y = 20
y = 20/2
y = 10 <===

x = 30

6 0
4 years ago
Can I get help on 37 please someone
GaryK [48]

Answer:

B

Step-by-step explanation:

B is the correct answer.

8 0
4 years ago
The swimming pool at Spring Valley High School is a rectangle with a width of 75 meters and a length of 35 meters. Around the pe
stealth61 [152]
Same as before

total=(2w+75)(2w+35)=4w²+220w+2625

pool=75 times 35=2625

minus pool from total
4w²+220w+2625-2625=4w²+220w
4 0
3 years ago
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