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2 years ago

Find unit rate. $2.40 for 12 eggs

Mathematics

1 answer:

nevsk [136]2 years ago

6 0

The unit rate would be $0.2 per egg.

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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).

4 0

3 years ago

PLS HELP IF YOU WANT

Nastasia [14]

Answer:45 * t = 2.5 * (1-t)...the equation will have one solution.

Step-by-step explanation:

For this case, the first thing you should know is:

d: v * t

Where,

d: distance

v: speed

t: time

To go to school by bus we have:

d = 45 * t

To return from school we have:

d = 2.5 * (1-t)

how the distance is the same:45 * t = 2.5 * (1-t)

3 0

2 years ago

Read 2 more answers

Which property is represented below?<br> a = a

Vlada [557]

A = a is an example of Commutative Property.

I hope this helps you out Aydria01!

6 0

3 years ago

WHAT IS -(-2z+5y) HELP MY HOMEWORK IS DUE IN 50 MINUTES PLEASE

vampirchik [111]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{2z - 5y}}}}}$

Step-by-step explanation:

$\sf{ - ( - 2z + 5y)}$

Distribute negative ( - ) sign through the parentheses

$\sf{( - ) \times ( - 2z) + ( - ) \times (5y)}$

$\dashrightarrow{ \sf{2z + ( - 5y)}}$

$\dashrightarrow{ \sf{2z - 5y}}$

Hope I helped!

Best regards! :D

7 0

3 years ago

True or false?, If I earn 60% more than you,then you must earn 37.5% less than me

neonofarm [45]

Answer:

True

Step-by-step explanation:

We have two salaries:

My salary is A

Your salary is B

If I earn 60% more than you

This means that

$A = (1 + 0.6)B = 1.6B$

You must earn 37.5% less than me

The ratio between your salary and mine is:

$r = \frac{B}{1.6B} = 0.625$

Your salary is 62.5% of mine. So you earn 100-62.5 = 37.5%. So this is true.

7 0

3 years ago