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DiKsa [7]
3 years ago
12

1. A NUMBER X DECREASED BY 3 IS 5.

Mathematics
2 answers:
Rom4ik [11]3 years ago
4 0
Cristopher Colombus. He is the answer to this question. If you tihink different, he will colonize you.
OLEGan [10]3 years ago
4 0
1. x-3=5
x = 5+3 = 8
2. a/7=14
a = 14*7
a = 98
3. b*9 = 36
b = 36/9
b = 4
4. x + 4 = 12
x = 12-4
x = 8
5. 4+k=14
k = 14-4
k = 10
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mafiozo [28]

Answer:

the numbers are 4,6

Step-by-step explanation:

Let

x-------> the smaller even consecutive integer

x+2-------> the larger even consecutive integer

we know that

x^{2}=(x+2)+10

solve for x

x^{2}-x-12=0

The formula to solve a quadratic equation of the form ax^{2} +bx+c=0 is equal to

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

in this problem we have

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so

a=1\\b=-1\\c=-12

substitute in the formula

x=\frac{1(+/-)\sqrt{-1^{2}-4(1)(-12)}} {2(1)}

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x=\frac{1(+/-)7} {2}

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therefore

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5 0
3 years ago
5t=9y + 22 solve for y
inna [77]
Solve for y:
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5 t = 9 y + 22 is equivalent to 9 y + 22 = 5 t:
9 y + 22 = 5 t
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