If a and b are two real numbers such that 2a² - 2b² = 8640 and a - b = 120, then what is the value of a + b?
Anonymous Quiz
34%
36
18%
240
32%
360
16%
72
Forwarded from ቃል Academy (Alexander "T")
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@Ethio_Web_Design
@Ethio_Web_Design
if f(x) = x + 1/x - 1 and f(a) = 5 then what is the value of f(2a)
Anonymous Quiz
10%
6
31%
2
26%
3
32%
10
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Grade 11th phys Worksheet unit 2-2.pdf
375.9 KB
Grade 11 physics work sheet on unit 2 vectors.
The simple present perfect continue tense.
The simple present perfect continuous tense is used to describe an action that started in the past, continued up until the present, and is still ongoing. It is formed with the auxiliary verb "have/has been" followed by the present participle (-ing form) of the main verb.
For example:
- "I have been studying for three hours." (Meaning: I started studying three hours ago, and I am still studying.)
- "She has been working at that company since last summer." (Meaning: She started working at the company last summer, and she is still working there.)
- "We have been waiting for the bus for a long time." (Meaning: We started waiting for the bus a while ago, and we are still waiting.)
- "They have been playing tennis all afternoon." (Meaning: They started playing tennis this afternoon, and they are still playing.)
It is important to note that this tense focuses on the duration or continuity of an action, rather than the result.
The simple present perfect continuous tense is used to describe an action that started in the past, continued up until the present, and is still ongoing. It is formed with the auxiliary verb "have/has been" followed by the present participle (-ing form) of the main verb.
For example:
- "I have been studying for three hours." (Meaning: I started studying three hours ago, and I am still studying.)
- "She has been working at that company since last summer." (Meaning: She started working at the company last summer, and she is still working there.)
- "We have been waiting for the bus for a long time." (Meaning: We started waiting for the bus a while ago, and we are still waiting.)
- "They have been playing tennis all afternoon." (Meaning: They started playing tennis this afternoon, and they are still playing.)
It is important to note that this tense focuses on the duration or continuity of an action, rather than the result.
Which one of the following is qualitative data?
Anonymous Quiz
11%
Income
16%
Pressure
63%
Efficiency
10%
Width
The data which can be expressed in number form is qualitative data.
Anonymous Quiz
27%
True
73%
False
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Maths Group11
If x² + y² = xy, then (x + y)⁴ is equal to:
Answer for this question:
Adding 2xy to both sides of the equation x² + y² = xy yields x² + y²+ 2xy= 3xy.
x² + y² + 2xy = (x+y)² = 3xy.
Then we have been asked (x+y)⁴?
so (x+y)⁴ = ((x+y)²)².
(x+y)⁴ = (3xy)² because (x+y)² = 3xy.
Thus, (x+y)⁴ = 9x²y².
Please invite your friends to the channel:
@maths_group11
@maths_group11
Adding 2xy to both sides of the equation x² + y² = xy yields x² + y²+ 2xy= 3xy.
x² + y² + 2xy = (x+y)² = 3xy.
Then we have been asked (x+y)⁴?
so (x+y)⁴ = ((x+y)²)².
(x+y)⁴ = (3xy)² because (x+y)² = 3xy.
Thus, (x+y)⁴ = 9x²y².
Please invite your friends to the channel:
@maths_group11
@maths_group11
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What is the value of (1,000,001)² - (999,999)²?
Anonymous Quiz
20%
4,000,000
47%
1,000,000
20%
2,000,000
13%
200,000
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If Log(2) = x and Log(3) = y then Log(6) is equal to:
Anonymous Quiz
42%
xy
38%
x + y
14%
2x + 2y
6%
x² + y³