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SCORPION-xisa [38]
2 years ago
5

5. Factor: x² - 4x-21

Mathematics
2 answers:
tekilochka [14]2 years ago
8 0

Answer:

(x - 7) (x + 3)

Step-by-step explanation:

masha68 [24]2 years ago
5 0
The answer is x² - 25

first you have to subtract the x² - 4x-21. And you get this x² - 25


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If 17,000 is 47% what is 100%<br> Please explain!
Alja [10]

Answer:

36,170.21276595745 (I did this on a calculator.)

Step-by-step explanation:

17000/47 = 361.7021276595745

361.7021276595745 x 100 = 36,170.21276595745

Your total answer is 36,170.21276595745.

8 0
3 years ago
Convert the units of length.<br><br> 7.5 cm<br> =<br> __ m
Vikki [24]

Answer:

If "m" stands for meters, then thats not possible.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which expression is rational? 6.27316543222718… square root of 2 square root of 14. square root of 49
iogann1982 [59]
A rational number<span> is any </span>number that can be expressed as the quotient or fraction. It is also a number that does not repeat and/or go on forever (ex. pi or <span>3.1415926535</span><span>)

Soo, the rational number is 
the √49 

√49 = 7 7 is a rational number, also a whole number as well, how bout that.</span>
8 0
3 years ago
Read 2 more answers
What is the answer to that problem?
Rom4ik [11]
It will take him 182 because when you divide 2175 by12 u get 181.25 and you have to add a day for the point .25
8 0
3 years ago
Which is equivalent to sin^-1(tan(pi/4)) ? Give your answer in radians.
aleksklad [387]
We are to find the value of sin^{-1}(tan( \frac{ \pi }{4}))

First we evaluate tan(π/4). The value of tan(π/4) is 1. 

So, 

sin^{-1}(tan( \frac{ \pi }{4})) =sin^{-1} (1)

sin(π/2) = 1
So,
sin^{-1}(1)= \frac{ \pi }{2}

Thus, we can write:

sin^{-1}(tan( \frac{ \pi }{4}))= \frac{ \pi }{2} radians.

So, the answer to this question is π/2 radians.
6 0
3 years ago
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