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svlad2 [7]
3 years ago
14

Which term is a term in this expression? A. x+4 B. -7 C. -3 D. -3x

Mathematics
1 answer:
svp [43]3 years ago
7 0

Answer: -3x is a term

Step-by-step explanation: Any number that has a variable after it is a term. Another way to look at it is any grouping of a number and a variable. If the number stands alone, it's not a term, and if it is being added to something, it is an equation.

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mariarad [96]
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3 0
4 years ago
Lim x→π/2 1-sinx/cot^2x<br>any genious help please ​
Simora [160]

Rewrite the limand as

(1 - sin(<em>x</em>)) / cot²(<em>x</em>) = (1 - sin(<em>x</em>)) / (cos²(<em>x</em>) / sin²(<em>x</em>))

… = ((1 - sin(<em>x</em>)) sin²(<em>x</em>)) / cos²(<em>x</em>)

Recall the Pythagorean identity,

sin²(<em>x</em>) + cos²(<em>x</em>) = 1

Then

(1 - sin(<em>x</em>)) / cot²(<em>x</em>) = ((1 - sin(<em>x</em>)) sin²(<em>x</em>)) / (1 - sin²(<em>x</em>))

Factorize the denominator; it's a difference of squares, so

1 - sin²(<em>x</em>) = (1 - sin(<em>x</em>)) (1 + sin(<em>x</em>))

Cancel the common factor of 1 - sin(<em>x</em>) in the numerator and denominator:

(1 - sin(<em>x</em>)) / cot²(<em>x</em>) = sin²(<em>x</em>) / (1 + sin(<em>x</em>))

Now the limand is continuous at <em>x</em> = <em>π</em>/2, so

\displaystyle\lim_{x\to\frac\pi2}\frac{1-\sin(x)}{\cot^2(x)}=\lim_{x\to\frac\pi2}\frac{\sin^2(x)}{1+\sin(x)}=\frac{\sin^2\left(\frac\pi2\right)}{1+\sin\left(\frac\pi2\right)}=\boxed{\frac12}

4 0
3 years ago
Please help me with this problem !!!
Alborosie

Answer:

all you have to do is select all numbers that are 0 or less

anything above 0 is wrong

Hope it Helps!

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A line with slope of 1/5 and passes through point (-1,3) what is its equation?
Deffense [45]

The equation of the line is y=mx+b

so now you can substitute:

3=1/5(-1)+b

3= -1/5+b

now add 1/5 on both sides

3 1/5=b

so the final equation is

y=1/5x+3 1/5

hope this helps!

4 0
3 years ago
Internet access to use online banking cost you $39.99 per month. A book of checks cost your $17.95 per 100. Your bank charges yo
Inessa05 [86]

Answer:

22.00

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it wants you to only buy 25 checks even though thats not possible in real life

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