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Studentka2010 [4]
3 years ago
7

PLEASE HELP!!! I WILL RATE BRAINLIEST TO THE FASTEST AND CORRECT ANSWER!!!

Mathematics
1 answer:
Andrej [43]3 years ago
5 0
Not easy:

- 4 < x^4 + 4x^2 ---> 0 < x^4+4x^2+4 = (x^2+2)^2, so it is always positive. Always satisfied. Curious ...

Now the other one:

x^4+4x^2<21 --> x^4+4x^2-21 < 0 --> (x^2+2)^2 - 25 < 0

(x^2+2)^2<25 ->>> x^2+2 < 5 ---> x^2 <3,

So -sqrt(3)<x<sqrt(3) is the answer! Brainliest?
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Anyone knows this? answer for me and ill make sure ill answer yours
iragen [17]

Answer:

X is - 4 propable substute this value and get y as 0

3 0
2 years ago
Plzzzz I need help. Algebra!!!!!! The length of a rectangle is 2 more than 3 times its width. Find the dimensions of the rectang
defon

Answer:

W = 5 in.

L = 17 in

Step-by-step explanation

L = Length W = Width

L = 2 + 3w

44 = 2L + 2W

44 = 2(2+3W) + 2W

44 = 4 + 6W + 2W

40 = 8W

5 = W

6 0
3 years ago
What is the value of x?
nikklg [1K]
It took me a minute, but I understand what it wants you to do.

a^2+b^2=c^2

Find the missing length on that one triangle to the left.

62^2+b^2= 99.2^2

Square the numbers. 

3844+b^2= 9840.64

Subtract 3844 on both sides. 

b^2= 5996.64 

Square root it. 

b= 77. 437975 round down to b= 77.4 

Now, we can find the length of the other missing side. (x+2)

77.4^2+b^2= 112^2

5990.76+b^2= 12,544

Subtract 5990.76 on both sides. 

b^2= 6553.24

Square root it. 

b= 80.952085, round to b=81

Now, plug that in. 

(x+2)= 81

Subtract 2 on both sides. 

x=79 (about)

I hope this helps! Make sure to check my work. 
~kaikers





4 0
3 years ago
Only the function represented by graph has an inverse function.
adell [148]

Answer:

  2

Step-by-step explanation:

Only graph 2 shows a function that passes the horizontal line test. The other graphs will cross a horizontal line multiple times, meaning the function does not have an inverse.

5 0
3 years ago
Read 2 more answers
Use a factor tree to find the prime factorization of the number. 1,855
forsale [732]
1855 ÷ 5 = 371
371 ÷ 7 = 53
53 ÷ 53 = 1


Prime Factors of 1855. Thus, the Prime Factors of 1855 are:

5, 7, 53.
6 0
3 years ago
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