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zheka24 [161]
3 years ago
7

Someone help me using the diagram below!

Mathematics
1 answer:
shutvik [7]3 years ago
6 0

Answer:

It's "D"

Your welcome ^_^

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Virginia es 8 años menor que Sonia y hace 10 años la edad de Virginia era 3/4 de la edad que Sonia tenía ¿cuál es la edad actual
frez [133]

Answer: Can you translate for me?

Step-by-step explanation:

4 0
2 years ago
 In a survey of 2,000 people who owned a certain type of​ car, 1,320 said they would buy that type of car again. What percent of
ELEN [110]

Answer: Total number of those who took part in the survey (T)=2000

Those who were satisfied (t)=1320

Percentage of those who were satisfied (S)=(t/T)*100

S=(1320/2000)*100

S=66%

Therefore only 66% were satisfied

Step-by-step explanation:

8 0
2 years ago
You have a 100 coins laying flat on a table, each with a head side and a tail side. 10 of them are heads up, 90 are tails up. yo
dmitriy555 [2]
I LOVE THIS PUZZLE

so,
the solution is
take 10 coins off to the side
flip those 10 over
done

sounds too simple?
 

this can be solved with algebra for ANY number of coins
lets say we have 50 coins, all tails
we flip h coins head
if h=x+y
if we seperate h coins off, we get x heads, and y tails
and in the other pile, we have y heads and the rest of the tails
so now, if we flip all the coins, we get y heads  in the pile and x tails





solution:
seperate 10 coins and flip all 10 of them over
5 0
2 years ago
112=7x+7(-4x-17)
Paha777 [63]
112= 7x + 7(-4x-17)
multiply the 7 by everything in parentheses
112=7x+(7*-4x)+(7*-17)
Positive multiplied by a negative is negative
112=7x-28x-119
combine like terms
112= -21x-119
add 119 to both sides
231= -21x
divide both sides by -21
-11= x

Check:
Substitute answer in equation
112= 7x + 7(-4x-17)
112= 7(-11)+7[(-4)(-11)-17]
112= -77 + 7(44-17)
112= -77 + 7(27)
112= -77 + 189
112=112

Hope this helps! :) Good luck with math!!
5 0
3 years ago
Need help<br>Simplify: (-√x-4)^2<br>​
Maru [420]
I think it is......
x-4
6 0
3 years ago
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