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damaskus [11]
3 years ago
13

(a-b) (a+b)?? How do you solve this equation?

Mathematics
2 answers:
garik1379 [7]3 years ago
5 0
Distribute the first +a to the +a and multiply, then multiply the same +a and the +b and then multiply the -b and the +a and then the -b and the +b. 

Hope this helped, if you have any more questions about this, just ask.
gregori [183]3 years ago
5 0
You can use a system called foil.
1. a*a= a^2
2. a*b= ab
3. -b*a= -ab
4. -b*b= -bb
a^2+ ab -ab-bb= a^2-bb
(Positive ab is canceled out by negative ab)
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Answer:

y = 7.50 + 1.50x

Step-by-step explanation:

The admission costs $7.50 and after x hours Jon has to pay $1.50*x. Then the cost y in dollars is

y = 7.50 + 1.50x where x is the number of hours.

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What is an atom? and what is the difference of atom and molecule<br><br>​
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Answer: <u>An atom is the basic unit of matter</u> and the defining structure of elements. The difference between an atom and a molecule is that <u>molecules are formed when two or more atoms bond together</u>. If molecules contain atoms of different elements, that substance is known as a compound. <u>Atoms make up molecules. </u>

6 0
3 years ago
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Is 6.3 &gt; 6.04 reasonable yes or no Explain
Brums [2.3K]

Answer:

Yes

Step-by-step explanation:

By rounding to the 10ths place, we can easily see that 6.3 is greater than 6.04. 6.3 is already rounded to the 10ths place, but 6.04 rounded to the 10ths place is 6.0.

6.3 is clearly more than 6.0, therefore 6.3 is greater than 6.04.

3 0
2 years ago
CHECK MY WORK PLEASE
Likurg_2 [28]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
In Class 1, what is the median score? A) 70 B) 70.5 C) 71.5 D) 72
evablogger [386]

Answer:

B)  70.5

Step-by-step explanation:

Median = middle value when the values are placed in order.

If there are two middle values, the median is the mean of those two values.

<u>Class 1</u>

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Therefore, there are two middle values: 14th and 15th values

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