All categories

3 years ago

What are the solutions of the quadratic equation x^4-5x^2-14=0

Mathematics

1 answer:

Marysya12 [62]3 years ago

3 0

The solutions are 7, - 7, 2, - 7

You might be interested in

Which correlation coefficient obtained from modeling advertising and sales data of tutti frutti ice cream expresses the stronges

morpeh [17]

Just had this problem the answer is D.

8 0

3 years ago

Read 2 more answers

David, Egil and Frances share money in the ratio 2:7:9. Frances gets ?80 more than David. Explain how you know Egil gets ?80.

Natalija [7]

Step-by-step explanation:

We have been given that David, Egil and Frances share money in the ratio 2:7:9.

Let 2x, 7x and 9x be the amounts of money that David, Agil and Frances get respectively.

We are told that Frances gets $80 more than David. So we can write this information in an equation as:

$9x=2x+80$

Now let us solve for x.

$9x-2x=80$

$7x=80$

$x=\frac{80}{7}$

Now let us substitute $x=\frac{80}{7}$ in 7x (amount of money that Egil gets).

$\text{ Amount of money that Egil will get}=7\cdot \frac{80}{7}$

Upon cancelling out 7 from numerator and denominator we will get,

$\text{ Amount of money that Egil will get}=80$

Therefore, Egil will get $80.

6 0

4 years ago

A line passes through the point ( 4, 19 ) and ( 9, 24 ) write a liner function in the form y=Mx + b for this line.

sweet-ann [11.9K]

Answer:

y=x+15

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

Alysha’s average speed when walking home from the market was 5 mph, and it takes her 21 minutes longer than when she drives to t

Delicious77 [7]

9514 1404 393

Answer:

3 minutes

Step-by-step explanation:

Let x represent Alysha's time to drive home from the market.

Speed and time are inversely proportional to each other (for the same distance), so we have ...

(walking speed)(walking time) = (driving speed)(driving time)

5(x +21) = (8·5)(x)

x +21 = 8x . . . . . . . . . divide by 5

21 = 7x . . . . . . . . subtract x

3 = x . . . . . . .divide by 7

It takes Alysha 3 minutes to drive home from the market.

3 0

3 years ago

Represent √11.9 on the number line

ikadub [295]

The square root would be 3.4 if rounded to the tenths place

6 0

3 years ago