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lakkis [162]
3 years ago
7

YOU CAN CHANGE SUBTRACTION TO ADDITION, BUT YOU DON'T CHANGE ADDITION TO SUBTRACTION WHEN CALCULATING INTEGERS?

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
5 0

Step-by-step explanation:

<h2>a - b = a + (-b)</h2><h2>a + b = a - (-b)</h2>

for any real numbers

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Diagonally

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Jenny thinks that the expression below is equal to x²-4. If you agree, show that she is correct. If you disagree, show that she
sergiy2304 [10]

Answer:

Jenny is wrong the correct answer is x²+ 4 - 4 x.

Step-by-step explanation:

Given that

(x-2)³∕x-2

(x-2)³∕(x-2) =(x-2) (x-2)²∕(x-2)

(x-2)³∕(x-2) = (x-2)²

As we know that

(a-b)² = a²+b² - 2 ab

So

(x-2)² = x²+ 2² - 2 ˣ 2 ˣ x =  x²+ 4 - 4 x

(x-2)² =  x²+ 4 - 4 x

It means that

(x-2)³∕(x-2) = (x-2)² =  x²+ 4 - 4 x

So Jenny is wrong the correct answer is x²+ 4 - 4 x.

8 0
2 years ago
For a standard normal distribution, which of the following variables always equals 1?
STatiana [176]

Answer:

Z=1

Step-by-step explanation:

5 0
2 years ago
Which ones arent parrellograms?
MAVERICK [17]

Answer:

Hi, There! I'm Here to help :)

<em>I would Say the 1st Section On the Right Meaning the 1st Block on the right.</em>

<em />

Step-by-step explanation:

A parallelogram is a quadrilateral with opposite sides parallel (and therefore opposite angles equal)

.Few examples of a parallelogram are rhombus, rectangle, and square.

6 0
2 years ago
50 people are selected randomly from a certain population and it is found that 12 people in the sample are over 6 feet tall. Wha
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12 out of 50 are over 6 feet (12/50)
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3 years ago
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