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meriva
3 years ago
7

Mathematics Help Please!!

Mathematics
2 answers:
Fantom [35]3 years ago
8 0
Https://us-static.z-dn.net/files/da0/898a932883d3d078dd059fa2a97c67a7.jpeg

Nikitich [7]3 years ago
8 0
To solve this fraction we have to reduce to the same denominator, but prior to reducing, note that one of the denominators x²-4 could be expanded to:
(x-2)(x+2)   [remember a² - b² =n(a-b)(a+c)]

Let the denominator be (x-2)(x+2),

2/(x-2)(x+2) -(x-2)/(x-2)(x+2) = 3(x+2)/ (x-2)(x+2) ==>

2 -(x-2) = 3x+6 ==>2-x+2 = 3x+6 ==> x=-4/6 ==> x= - (1/2)
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How many fractions are equivalent to 4/5? explain
Pavel [41]
There are several fractions that are equivalent to 4/5. Some are 8/10, 80/100, 800/1000. They all equal the same decimal: 0.8
7 0
3 years ago
The figures below are similar. What is the value of x?(i didn't mean to chose an answer ;-;)
katrin [286]

Answer:

is 6 cm the value of x ?? if it is not .... then i also don't known ..sryy srry

8 0
2 years ago
Please help I will give brainliest
Viefleur [7K]

Answer:

option 1 is equivalent to 3^2.3^5

4 0
2 years ago
Read 2 more answers
the equation y= - 5.131x2+ 31.821x - 3.333 approximates the number of people standing in line to catch a commuter train x hours
ehidna [41]

We are given function: y= - 5.131x^2+ 31.821x - 3.333

Where, x is the number of hours after 5a.m.

We need to approximates the number of people standing in line to catch a commuter train at 7 a.m.

From 5 a.m. to 7 a.m. total number of hours = 7-5 = 2 hours.

So, we need to plug x=2 in the given function.

Plugging x=2 in y=- 5.131x^2+ 31.821x - 3.333, we get

y=- 5.131(2)^2+ 31.821(2) - 3.333

Let us simplify it now.

2^2= 4.

Therefore,

y=- 5.131(4)+ 31.821(2) - 3.333

= -20.524 + 63.642 - 3.333.

= 39.785 or 40 approximately.

Therefore, the number of people in line at 7 a.m. is approximately 40 people.

Option D.40 is correct option.

3 0
3 years ago
What is the measure of angle Z in the parallelogram shown?
Anarel [89]

Answer:

30 Degress

Step-by-step explanation:

8 0
2 years ago
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