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2 years ago

Simplify the expression (8n^4-6n+8n^2)+(6n^4-4)

Mathematics

1 answer:

DaniilM [7]2 years ago

3 0

Answer:

(8n^4-6n+8n^2)+(6n^4-4)

8n^4 + 8n^2 - 6n + 6n^4 - 4

Step-by-step explanation:

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Find the solutions to the system of equations. Select all that apply. Y=x^2-1 y=2x-2

Sliva [168]

Answer:

Option C (1, 0)

Step-by-step explanation:

We have a system with the following equations:

$y = x ^ 2-1\\\\y = 2x-2$

The first equation is a parabola.

The second equation is a straight line

To solve the system, substitute the second equation in the first and solve for x.

$2x-2 = x ^ 2 -1$

Simplify

$x ^ 2-2x + 1 = 0$

You must search for two numbers that when you add them, obtain as a result -2 and multiplying both results in 1.

These numbers are -1 and -1

Therefore

$x ^ 2-2x + 1= (x-1)(x-1)\\\\x ^ 2-2x + 1= (x-1)^2=0$

Finally the solutions are

$x = 1\\y =0$

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3 years ago

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A car dealer reported a 7.5% drop in sales from 895 cars. How many cars were sold?

Evgesh-ka [11]

Answer:

its is 38.6

Step-by-step explanation:

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3 years ago

19. Heather invests $4,900 in an account with a 3.5% interest rate, making no other deposits or withdrawals. What will Heather’s

denis-greek [22]

Answer:

$\$5,828.28$

Step-by-step explanation:

we know that

The compound interest formula is equal to

$A=P(1+\frac{r}{n})^{nt}$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

n is the number of times interest is compounded per year

in this problem we have

$t=5\ years\\ P=\$4,900\\ r=0.035\\n=2$

substitute in the formula above

$A=\$4,900(1+\frac{0.035}{2})^{2*5}$

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3 years ago

55.563 to the nearest hundredths

zysi [14]

Answer:55.56

Step-by-step explanation:

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3 years ago

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When you add 18 to 1/4 of a number, you get the number itself.

Lerok [7]

So if 18 plus 1/4 of the number is the number the means 18 is 3/4 of the number so 18 divided by 3 is 6 so 1/4 = 6 now add 6 to 18 to get 4/4 of the number which is 24 number = 24

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3 years ago

Simplify the expression (8n^4-6n+8n^2)+(6n^4-4)​

Simplify the expression (8n^4-6n+8n^2)+(6n^4-4)