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3 years ago

Which shows the equation below written in the form ax2 + bx + c = 0?

Mathematics

2 answers:

Nat2105 [25]3 years ago

5 0

Answer:

Step-by-step explanation:

We have the equation:

$x+9=4(x-1)^2$

To convert this to standard form, we can simply expand.

First, expand the right-hand side:

$x+9=4(x^2-2x+1)$

Distribute the right:

$x+9=4x^2-8x+4$

Subtract 9 from both sides:

$x=4x^2-8x-5$

Finally, subtract an x from both sides:

$0=4x^2-9x-5$

Flip:

$4x^2-9x-5=0$

Hence, our answer is D.

ss7ja [257]3 years ago

3 0

Answer:

can'T see it

Step-by-step explanation:

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The temperature on a February moming is -6° Celsius at 6 am. If the temperature drops 2 degrees by 7 am, rises 3 degrees between

MrMuchimi

Answer:

-24degC

Step-by-step explanation:

-6degC dropping by 2degC leads to -8degC (2degC colder, higher value negative numbers are colder as negative numbers increase in the opposite direction of positives)

so next -8degC rising by 3degC which is 3degC hotter(less negative) will give -5degC

the finap drop by 9degC makes the final temperature -5 -19 = -24degC(similar reasoning)

if you want a more straightforward method to doing these sorts of questions, just take temperature rise : add the value it rose by and temperature fall/drop: subtract the value it dropped/falled by.

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