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3 years ago

What are the answers please I will sub and like if you help me please . . .

Mathematics

1 answer:

Alik [6]3 years ago

6 0

Answer:

A: 40

B: 1

C: 4000

Step-by-step explanation:

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A congruent is called

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3 years ago

1/a+2/b+3/c; Express as a single fraction.

Anika [276]

Answer: (bc+2ac+3ab)/(abc)

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3 years ago

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Will give the brains of me brains and my brains and maby ur brain to u how many brains can i give u if u ask this quetion right?

kogti [31]

Answer: 1.6

Step-by-step explanation:

This data set is 0,1,2,2,3. Thus, you can calculate the mean by doing (0+1+2+2+3)/5=1.6

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3 years ago

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8×(30+2)=(8×_)+(8×2)

irinina [24]

Using the distributive property, a(b+ c) = ab + ac. In this case, b is 30, so the blank is 30.

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3 years ago

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What is the zero in the quadratic function f(x)= 9x^2-54x-19?

Alex17521 [72]

Answer:

6.33... and 0.333...

Step-by-step explanation:

The quadratic formula is

$x=\frac{-b+\sqrt{b^2-4ac} }{2a}$ .

It is important because while some quadratics are factorable and can be solved not all are. The formula will solve all quadratic equations and can also give both real and imaginary solutions. Using the formula will require less work than finding the factors if factorable. We will substitute a=9, b=-54 and c=-19.

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}\\x=\frac{-(-54)+/-\sqrt{(-54)^2-4(9)(-19)} }{2(9)}\\x=\frac{54+/-\sqrt{2916+684} }{18}$

We will now solve for the plus and the minus.

The plus,,,

$x=\frac{54+\sqrt{3600}}{18}\\x=\frac{54+60}{18}\\x=\frac{114}{18}\\x=6.3$

and the minus...

$x=\frac{54-\sqrt{3600}}{18}\\x=\frac{54-60}{18}\\x=\frac{-6}{18}\\x=-0.333...$

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3 years ago