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4 years ago

Solve the equation 10x^4-81x^2+164=0 on the real number system

Mathematics

2 answers:

rusak2 [61]4 years ago

6 0

I got -2,2....................

Natasha_Volkova [10]4 years ago

5 0

x = -2, 2, +/- square root of 41/10

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Andy is buying a car.

serg [7]

7/100* 6500=455

6500-455=6045

6045/12=503.75

Andy pays 503.75 a month

8 0

3 years ago

The projected T. rex is about

dolphi86 [110]

Answer: $scale\ factor=230$

Step-by-step explanation:

You need to analize all the information given in the exercise.

You know that the actual height of the T-rex on the projector lens is the following:

$actual\ height=2\ cm$

The height of the projected T-rex is:

$projected\ height=4.6\ m$

Make the conversion from meters to centimeters:

$projected\ heigth=(4.6\ m)(\frac{100\ cm}{1\ m})\\\\projected\ heigth= 460\ cm$

Therefore, the scale factor will be:

$scale\ factor=\frac{projected\ heigth}{actual\ heigth}$

Finally, you must substitute values into the equation and then you must evaluate in order to find the scale factor of the projection. You get that this is:

$scale\ factor=\frac{460\ cm}{2\ cm}\\\\scale\ factor=230$

7 0

3 years ago

Solve the equation n2 − 29 = 260 by using square roots.

umka2103 [35]

Answer:

Option A, $n =$ ± $17$

Step-by-step explanation:

Step 1: Add 29 to both sides

$n^2 - 29 = 260$

$n^2 - 29 + 29 = 260 + 29$

$n^2 = 289$

Step 2: Square root both sides

$\sqrt{n^2} = \sqrt{289}$

$n =$ ± $17$

Answer: Option A, $n =$ ± $17$

4 0

2 years ago

Suppose you invest $10,410 in equipment to manufacture a new board game. Each game costs $2.65 to manufacture and sells for $20.

leva [86]

Let x= number of board games
20x=10410+2.65x 
-2.65 -2.65 
17.35x=10410 
/17.35 /17.35 
x=600 
You would need to sell at least 600 board games to break even

3 0

3 years ago

How long is 50% of 60 minutes? Give your answer in a whole number

Bas_tet [7]

Answer:

Step-by-step explanation:

50=1/2

1/2 of 60 is 30

7 0

3 years ago

Read 2 more answers