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Charra [1.4K]
3 years ago
12

Solve the equation for all values of x by completing the square. 3x^2-60x+255=0

Mathematics
1 answer:
erik [133]3 years ago
4 0

Answer:

x=5 and x=15

Step-by-step explanation:

3x^2-60x+225=0

3x^2-60x+225/3=0/3

x^2-20x+75=0

x^2-5x-15x+75=0

x(x-5)-15(x-5)=0

(x-5)(x-15)=0

x-5=0 x-15=0

x=5 x=15

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Answer I'll give brainliest to first one<br>10 points​
defon

Answer:

Have a splendiferous day...

Step-by-step explanation:

3÷12=¼

6÷10=⅗

7÷14=½

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2÷4=½

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3÷24=⅛

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7 0
2 years ago
Read 2 more answers
Solving systems of equations using substitution p=q+2<br> 4p+3q= -27
GREYUIT [131]
Ok, so you are given the value of P=q+2

The substitution method tells us that we must insert the value we know, into the second equation, 4P+3q= -27


Doing so will give us 4(q+2)+3q= -27

For right now, lets just focus on the first part, 4(q+2)

We can simplify this by distributing(multiplying) the 4 to whats inside the variables.

This will give us 4q+8

now lets add this back to the rest of the equation >>>  4q+8+3q = -27

We can further simplify by adding like terms >>> 7q+8 = -27

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now divide both sides by 7 >>> q = -35/7

Therefor q = -5

EDIT* 

now that we know q = -5 we can put q into the equation for P !

we know that p=q+2

so lets put q in now >>> p=(-5)+2

and simplify>>> p = -3

I hope this helps:)
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4 years ago
13. Greg is going into business selling homemade blankets.
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Answer:

all positive inegers

Step-by-step explanation:

8 0
3 years ago
Please answer today or tomorrow. The outside temperature was 5 degrees Fahrenheit. How many degrees below the freezing point of
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Answer:

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3 years ago
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Step-by-step explanation:

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x = 49500 / 3333.33

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The amount that Randy expect to pay for his policy will be $14.85

8 0
2 years ago
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