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4 years ago

K=-3 N=-4 -K²-3(3K-7N)+5

Mathematics

1 answer:

solong [7]4 years ago

4 0

Answer:

all work is pictured and shown

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Write a second inequality withe the same meaning -20 <- s

DedPeter [7]

S < 20 , -5x > -100 , etc

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3 years ago

Work out the area of a rectangle with base, b = 20mm and perimeter, P = 60mm.

skelet666 [1.2K]

base+perimeter

20mm+60mm

=80mm

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3 years ago

A machine makes errors in a certain operation with probability p. There are two types of errors. The fraction of errors that are

Crank

Answer:

Step-by-step explanation:

The concept of binomial probability is applied.

Mathematically from binomial probability ; (nCx)px(1−p)(n-x)

The detailed step by step is as shown in the attachment

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3 years ago

I need help on this question I’m confused I think a &b are the same and c &d are different but I’m not to sure !

Nina [5.8K]

<h3>Answer: They're all the same</h3>

====================================================

Reason:

$2^6$ means we have 6 copies of "2" multiplied out as shown in choice B. That explains how A and B are the same, and we can say

$2^6 = (2*2*2)*(2*2*2)$

The parenthesis are optional, but I find they're handy to count the '2's easier.

----------------

Now notice that

$2^3 = 2*2*2$

So,

$2^6 = (2*2*2)*(2*2*2)\\\\2^6 = (2^3)*(2^3)\\\\2^6 = (2^3)^2\\\\$

The last step is possible because we have two copies of $2^3$ multiplied together.

This shows that choice C is equivalent to A and B.

-------------------

Lastly,

$2^6 = (2*2*2)*(2*2*2)\\\\2^6 = (2*2)*(2*2)*(2*2)\\\\2^6 = (2^2)*(2^2)*(2^2)\\\\2^6 = (2^2)^3\\\\$

The jump to the last step is possible because we have three copies of $2^2$ multiplied together.

This shows choice D is equivalent to the others.

All four expressions are the same.

They represent different ways to say the same number. That number being 64.

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2 years ago

A regular number cube is rolled. what is the probability that a 3 will not be rolled? 1. 1/6 2. 1/2 3. 4/5 4. 5/6

hram777 [196]

5/6 because there is 6 numbers on a die and if you roll a dice there is a chance you can get 5 other numbers than 3

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4 years ago