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3 years ago

Which

Mathematics

2 answers:

snow_lady [41]3 years ago

6 0

I think it’s C hope that helped

Amanda [17]3 years ago

3 0

$\huge\mathfrak\red{answer}$

Trust me, its C. Associative (Associative property of multiplication)

[mark me brainliest please :( i need 3 more]

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If an electric circuit is not grounded, it is best to reach out and touch it to

astraxan [27]

The answer is B because it is not safe to touch it

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2 years ago

melissa purchased a car at the price of 20,540 with a down payment of 3,900 and financed the rest paying 8.6% interest compounde

DaniilM [7]

Answer:

$478.06

Step-by-step explanation:

let's first start out by figuring out the present value of the loan

((20540*1.0825)+955+57)-3900

Which gives me a value of 23246.55

I'm then going to assume that the 8.6% is a nominal interest rate meaning that the effectively monthly rate is equal to .086/12=.0072

Which means we have

23246.55=X(a angle 60 at .0072) (i'm using annuities to solve this if you don't know what this is just ask)

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2 years ago

Marcus said the product of 78 × 134 is 94.<br><br> How can you tell that his answer is wrong?

QveST [7]

You can use estimation.

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Clearly 10,400 and 94 are way off.

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2 years ago

Consider the first five steps of the derivation of the Quadratic Formula.

lara31 [8.8K]

Answer:

Full proof below

Step-by-step explanation:

$\displaystyle ax^2+bx+c=0\\\\ax^2+bx=-c\\\\x^2+\biggr(\frac{b}{a}\biggr)x=-\frac{c}{a}\\\\x^2+\biggr(\frac{b}{a}\biggr)x+\biggr(\frac{b}{2a}\biggr)^2=-\frac{c}{a}+\biggr(\frac{b}{2a}\biggr)^2\\\\x^2+\biggr(\frac{b}{a}\biggr)x+\frac{b^2}{4a^2}=-\frac{c}{a}+\frac{b^2}{4a^2}\\ \\\biggr(x+\frac{b}{2a}\biggr)^2=-\frac{4ac}{4a^2}+\frac{b^2}{4a^2}\\ \\\biggr(x+\frac{b}{2a}\biggr)^2=\frac{b^2-4ac}{4a^2}\\ \\x+\frac{b}{2a}=\pm\frac{\sqrt{b^2-4ac}}{2a}\\ \\x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

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1 year ago

I need help with this one plis quickly !!!

shutvik [7]

Answer:

Step-by-step explanation:

Hard to see but pretty sure thats it

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2 years ago