3 years ago

What you need to know

Mathematics

1 answer:

kodGreya [7K]3 years ago

8 0

Answer: 3

Step-by-step explanation: make sense

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How do I compare decimal numbers

Neporo4naja [7]

When comparing decimals, start in the tenths place. The decimal with the biggest value there is greater. If they are the same, move to the hundredths place and compare these values. If the values are still the same keep moving to the right until you find one that is greater or until you find that they are equal.

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3 years ago

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Rewrite the square-root expression as an imaginary number: sqrt of -64<br><br> is it 8i?

IceJOKER [234]

The answer is 8i.

i = √(-1)

√(-64) = √((-1) * 64)
= √(-1) * √64
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= 8i

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4 years ago

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3 years ago

The cost of 15 oranges is $1 how much does 5 dozen oranges cost?

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Answer:

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4 years ago

The first three steps in determining the solution set of the system of equations algebraically are shown in the table. y = −x2 +

lianna [129]

You have a system of equations $\left \{ {{y = -x^2+2x-9} \atop {y =-6x+6}} \right.$ .

1. Substitude right side of second equation into the left side of the first equation: $-6x+6=-x^2+2x-9$ .

2. Solve this equation:
$x^2-2x+9-6x+6=0, \\ x^2-8x+15=0, \\ D=(-8)^2-4\cdot 1\cdot 15=64-60=4, \\ \sqrt{D}=2, \\ x_{1,2}=\dfrac{8\pm 2}{2 } =3,5$ .

3. Find y:
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4 years ago

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