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ValentinkaMS [17]
3 years ago
5

Find the lowest common denominator.

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
4 0
The LCD is (x+2) ^{2}(x-2) ^{2} since x^{2} -4 factors into (x+2)(x-2).  The idea for a LCD is to have in all the denominators what makes up each individual denominator. 
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Please answer as well?
dimulka [17.4K]

Answer:

I think it is the 3rd one

Step-by-step explanation:

I hope it is. Sorry if not, I tried.

8 0
3 years ago
] What percentage of the last 30 U.S. Presidents were inaugurated at the age of 60 or later? (Round to 1 decimal place.)
svetlana [45]

Answer:

20.0%

Step-by-step explanation:

The last 30 presidents of America starts from the 16th president, Abraham Lincoln and ends with the current and 45th president, Donald Trump.

The presidents that are 60 and above years during this period include

Donald Trump, Goerge H. W. Bush, Roland Regan, Gerald Ford, Dwight D. Eisenhower and Harry S. Truman.

Making 6 of them out of 30

The percentage is given by

Number of presidents aged 60 and above×100/Total number of presidents

6×30/100=20%

7 0
3 years ago
Please help im very confused
joja [24]
Download the app photo math, it will give u all the answers for those and shows the work
7 0
3 years ago
I need help on questions 9, 10, and 11 please!
bulgar [2K]
In general, to find the surface area of a prism (a shape with 2 bases) is 
Area of Base*2 + Lateral Area (Lateral area = Perimeter of bases * height)

#9 Area of base= 2×1÷2=1 *2=2
Lateral area= 2+1+2.2=5.2 5.2*3=15.6
Answer=17.6
#10 Area of Base= 120*2=240
Lateral Area=500
Answer=740
#11
Area of base=8*2=16
Lateral Area= 41.4
Answer=57.4

8 0
3 years ago
Find x so that a is parallel to b. state the converse used​
kondor19780726 [428]

Answer:

x = 7

If a is parallel to b, then 9(7) + 11 = 74.

Step-by-step explanation:

We don't know if the lines are parallel, so we need to see what x is in 9x + 11 = 74, then substitute that value for x in the equation. If both sides are true, the two lines are parallel.

9x + 11 = 74

<em>Step 1: Subtract 11 from both sides.</em>

9x = 63

<em>Step 2: Divide both sides by 9.</em>

x = 7

<em>To make sure, let's substitute 7 for x in the earlier equation.</em>

9(7) + 11 = 74

<em>Step 3: Multiply 9 by 7 to get 63.</em>

63 + 11 = 74

<em>Step 4: Add 11 to 63 to get 74.</em>

74 = 74

The two sides are equal, so a and b are parallel. The definition of a converse is the reverse of a conditional statement. As a result, the converse here is "If a is parallel to b, then 9(7) + 11 = 74."

8 0
3 years ago
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