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Galina-37 [17]
3 years ago
8

If a = -2.6, what is the value of -a

Mathematics
2 answers:
7nadin3 [17]3 years ago
8 0

if a = -2.6

then -a = -(-2.6)

so -a =2.6

Maksim231197 [3]3 years ago
6 0

-2.6 + -2.6= 5.2......right? Or am I looking at this wrong?

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A recipe requires 2 eggs for every 5 dozen cookies. At this rate, how many eggs are required for 30 dozen​
Lina20 [59]
6 eggs (i think)







5x12=60 cookies require 2 eggs
30x12=360
360 divided by 60= 6

so six eggs
5 0
2 years ago
Read 2 more answers
Kumar bought some mangoes. The price of each mango () is found to be 6 more than the total number of mangoes bought by him and t
spayn [35]

Answer:

Price = 20, Amount = 14

Step-by-step explanation:

A = Amount of Mangoes

P = Price for 1 Mango

P = A + 6

280 = P * A

insert A+6 for P

280 = (A+6) * A

280 = 6A + A²

280=1*a^2+6*a  | Vertausche beide Seiten der Gleichung.

1*a^2+6*a=280  | quadratische Ergänzung: ergänze auf beiden Seiten (3)^2

1*a^2+6*a+(3)^2=3^2+280  | Rechne 3 hoch 2 aus.

1*a^2+6*a+(3)^2=9+280  | addiere 9 und 280

1*a^2+6*a+(3)^2=9+280  | Fasse die rechte Seite mit Hilfe der binomischen Formel zusammen.

1*(1*a+(3))^2=289  | Auf beiden Seiten Quadratwurzel ziehen.

1*a+(3)=+-*289^0.5  

1*a_1+(3)=289^0.5  

1*a_1+3=289^0.5  | Ziehe die Wurzel aus 289

1*a_1+3=17  | -3

1*a_1=14  

8 0
3 years ago
Linda, Tony, and deon have a total of $99 in their wallets. Tony's has 4 times what deon has. Linda has $9 more than Deon. How m
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Answer:its 9 just ook the tsest

Step-by-step explanation:

4 0
3 years ago
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FrozenT [24]
2x + 2y=132

xy=1080

Let x=1080/y

2160/y + 2y=132
2y^2 - 132y +2160=0
2(y^2-66y+1080)=0
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y=30 or y=33
(36,30) or (30,36)

So... x=30,36 and y=36,30. Either way, the answer is 30 by 36 or 36 by 30. 
5 0
3 years ago
John bought a car for $65.000. If the value depreciates by 8% each year,how much will the car be worth at the end of two years?​
earnstyle [38]

Answer:

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Step-by-step explanation:

($65000×8%)(2)

7 0
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