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Citrus2011 [14]
3 years ago
6

Was the ratio of 2:7 equivalent to

Mathematics
2 answers:
zhenek [66]3 years ago
7 0

4:14

because 2*2 is 4 and 7*2 is 14


mars1129 [50]3 years ago
7 0

4:14 is the equivulant ratio of 2:7

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Jacqueline had $.84 cents her brother gave her another $.61 cents write the amount of money Jacqueline now has as a decimal expl
gladu [14]
It is 0.23 because 84-61 is 23 and 23 Divided by 100 is 0.23
8 0
3 years ago
Whats the missing number
Anuta_ua [19.1K]

Answer:

<h2><u><em>5</em></u></h2>

Step-by-step explanation:

X * 3^2 +2 = 47

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198round to the nearest tens and hundreds
Xelga [282]
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3 years ago
PLEASE HELP
Viefleur [7K]
7x²=9+x
so
for
0=ax²+bx+c

x=\frac{-b+/-\sqrt{b^2-4ac}}{2a}
so

7x²=9+x
mins 9 from both sides and minus x
7x²-1x-9=0
a=7
b=-1
c=-9


x=\frac{-(-1)+/-\sqrt{(-1)^2-4(7)(-9)}}{2(7)}
x=\frac{1+/-\sqrt{(-1)^2+4(7)(9)}}{2(7)}
so the 4th one
4 0
3 years ago
Use the quadratic formula to find the roots: -3x^2 + 27x = 42​
ch4aika [34]

Answer:

x=2,x=7

Step-by-step explanation:

-3x^2+27x=42

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x^2-2x-7x+14=0

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(x-2)*(x-7)=0

x-2=0

x-7=0

x=2

x=7

8 0
3 years ago
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