3 years ago

2x2-3 evaluate each expression. Show your work

Mathematics

1 answer:

nirvana33 [79]3 years ago

5 0

Answer:

Step-by-step explanation:

2x2 = 4

4-3=1

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.875 written as a percentage

Alex17521 [72]

Answer:

87.5%

Step-by-step explanation:

to write a percentage as a number you move the decimal to the left 2 times.

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3 years ago

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In the third degree polynomial function f(x) =x^3 + 4x, why are 2i and -2i zeros?

IgorC [24]

Answer:

We just need to evaluate and get f(2i)=0, f(-2i)=0.

Step-by-step explanation:

Since $i^2=-1$ , then $i^3=i^2i=-i$ , and we can apply this when we evaluate $f(x) =x^3 + 4x$ for 2i and -2i.

First we have:

$f(2i) =(2i)^3 + 4(2i)=2^3i^3+8i=8(-i)+8i=0$

Which shows that 2i is a zero of f(x).

Then we have:

$f(-2i) =(-2i)^3 + 4(-2i)=(-2)^3i^3-8i=-8(-i)-8i=8i-8i=0$

Which shows that -2i is a zero of f(x).

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4 years ago

Suppose you write a sum of numbers as a product of their GCF and another sum. What is the GCF of the numbers in the other sum? C

vivado [14]

Answer:

Step-by-step explanation:

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3 years ago

What is [12÷(3-1)+4]×6

erma4kov [3.2K]

The answer should be:

60

Hoped it Helped !!

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3 years ago

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Could someone please help ?

blondinia [14]

Answer:

Step-by-step explanation:

Put x = 2 into both equations:

For x- 10 = 2-10 = 8 (Not > 8)

For -0.5x-4 = -0.5*2-4 = -5 (Not < -8)

Hence, the answer is no.

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3 years ago