3 years ago

Which expression below has a coefficient of 3? 4x +9 5x-3 3x² + 3x4

Mathematics

1 answer:

valina [46]3 years ago

5 0

Answer:

3x^2+3x4

Step-by-step explanation:

the coefficient comes before the variable

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4 years ago

X2 + 8x + 19 = 0 What is the equivilent that results from completing the square?

IrinaVladis [17]

Answer:

$(x+4)^2+3=0$

Step-by-step explanation:

Hey there!

Standard form is what this equation is in

Standard form is this: $ax^2+bx+c$

So order to complete the square, you need to take the $b$ term out of the equation, divide it by two, and then square it

In this case, the $b$ term is 8

We need to divide 8 by 2 ---> 4

Then square 4 ---> 16

So now you should add 16 to both sides

$x^2+8x+16+19=16$

Now you can simplify the LHS

$(x+4)^2 +19=16$

Now you subtract 16 from both sides

$(x+4)^2+3=0$

So this is as far as you can go since you cannot take the square root of a negative number

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2 years ago

what is the most appropriate center for 27 142 145 146 154 162 /12592106/70400e23?utm_source=registration

Klio2033 [76]

<span>27 142 145 146 154 162

27 is definitely an outlier. You could temporarily drop it and focus on
</span>{142 145 146 154 162}. The median of this 5-numeral set is 146; it'd be a good "center." So would the mean (<span>142 +145 +146 +154 +162) /5. No one value shows up more than once, so forget about "mode."

</span>

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3 years ago