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3 years ago

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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3 years ago

I NEED HELP ON THIS CONSTRUCTED RESPONSE! :(

Vikentia [17]

Answer:

Step-by-step explanation:

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2 years ago

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nalin [4]

Answer:

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Step-by-step explanation:

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2 years ago

Angelique makes beaded jewelry. The graph below shows the number of beads on varying cord lengths.

8_murik_8 [283]

Answer:

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Step-by-step explanation:

23=4 3+4+7 1/2 4/7 8/2

6 0

2 years ago

A jacket cost $35.50 more than a pair of tennis shoes if the total cost of both items is $161.30 find the cost of each

Mice21 [21]

Answer:

$62.9 and $98.4

Step-by-step explanation:

Let the cost of tennis shoe be x

Since a jacket cost $35.50 more than a pair of tennis shoe,

Then cost of jacket would be

= $35.50 + x

Total cost of both items would be;

x + $35.50 + x = $161.30

2x = $161.30 - $35.50

2x = $125.8

x = $62.9

Therefore, cost of pair of tennis shoe is $62.9

Jacket cost would now be

= $35.5 + x

= $35.5 + $62.9

= $98.4

6 0

3 years ago