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3 years ago

X4 – 17x2 + 16 = 0 Rewrite the equation in terms of u

2 answers:

6 0

You probably are interested in expressing the given equation as a quadratic equation in u, as it will make it easy to find the solutions.

Let u = x²
So,
u² = x⁴

So, the given equation can be written as:

u² - 17u + 16 = 0

Now the equation is quadratic in u and the solutions can be calculated using quadratic formula or factorization.

vaieri [72.5K]3 years ago

4 0

Answer:

This is the answers on edge.

Step-by-step explanation:

For the first one: Its the 3rd option

For the second one: Its the 4th option

For the third one: Its the 2nd option

For the last question: Its the 1st, 3rd, 6th, 7th option

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PLEASE HELP THANKS!!

mafiozo [28]

Answer: a) x = 5 b) x = 12

Step-by-step explanation: For each one you just do the inverse to get it on the other side of the equal sign. For example x + 3 = 8 would be like this :

1. x + 3 = 8

2. x + 3 - 3 = 8 -3

( + 3 - 3 cancels out)

3. x = 5

6 0

3 years ago

Read 2 more answers

Kristin's credit rating was lowered, and the credit card company raised her APR from 14% to 15.2%. If her average daily balance

Sloan [31]

Answer:

0.0022x

Step-by-step explanation:

Given that,

The credit card company raised her APR from 14% to 15.2%.

Her average daily balance this month is x dollars.

We need to find the algebraically the increase in this month's finance charge due to the higher APR. It can be calculated as follows :

$y=x\times \dfrac{12\%}{14}-x\times \dfrac{15.2\%}{14}\\\\=x\times \dfrac{12}{1400}-x\times \dfrac{15.2}{1400}\\\\=-0.0022x$

So, the required increase in the month's finance is 0.0022x.

3 0

3 years ago

Read 2 more answers

On a map there are 3 cm between two cities the actual distance between cities is 45 km what is the scale used for the map

serg [7]

Answer : 15

to find the scale you divide. 45/3 = 15.

this gives you the scale 15

i don’t know how else to explain it but i hope this helps

6 0

3 years ago

Solve the system of equations by graphing 4x-5y=20

borishaifa [10]

Here is your graph of the system. Where they cross is the answer, which is -4. Pretty much you have to graph each equation and where they meet is the answer.

5 0

3 years ago

Read 2 more answers

Circles worksheet! <br>please help?

Viefleur [7K]

5. Center (-2,3) Radius 3
6. Center (-2,0) Radius √11
7. Center (0,-4) Radius 5
8. Center (3/2,-4) Radius 3√17/2
9. Center (6,8) Radius 4
10. Center (-1,-2) Radius 4

Ive attached what the graphs will look like, I cannot add the last graph since its the image limit for this website.

Hope this helps, feel free to PM me if you are still having trouble and need the last graph :)

7 0

3 years ago