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2 years ago

Add and subtract polynomials

1 answer:

4 0

(w^2+5w) + (2w^2 +w +7)
when adding or subtracting polynomials, just combine the like terms from each set:

w^2 + 2w^2 = 3w^2

5w +w = 6w

so you would have : 3w^2 + 6w + 7

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How do you make an exponential equation with these two points: (1,2) and (0.5,4)

Over [174]

The required equation is y=8×( $( \frac{1}{2} )^{x}$

Step-by-step explanation:

Given,

The two points are (1,2) and (0.5,4)

To find the exponential equation of these given points.

Formula

The general form of exponential equation is y = $ab^{x}$ where, A and B are any real number.

$\frac{x^{m} }{x^{n} } = x^{m-n}$

Now, the points satisfy the equation.

So,

2 = $ab^{1}$ ------- (1) and

4 = $ab^{0.5}$ ------ (2)

Now (1) ÷ (2) we get,

$\frac{ab }{ab^{0.5} }$ = $\frac{2}{4}$

or, $b^{0.5}$ = $\frac{1}{2}$

or, b = $\frac{1}{4}$ [ by squaring we get]

Now, from (1) we get,

2 = a× $\frac{1}{4}$

or, a = 8

Hence,

The equation is y=8×( $( \frac{1}{2} )^{x}$

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2 years ago

Alex wants to buy a video game that sells for $59.99. An advertisement says that next week that video game will be on sale for $

Andrew [12]

This is just simple subtraction, 59.99 - 47.50

The answer is C: 12.49

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2 years ago

Solve 3x - 5 + x = 31. -12 -9 9 12

steposvetlana [31]

Answer: 9

-12 results in -53

-9 results in -41

9 results in 31

12 results in 43

8 0

2 years ago

John Sullivan bought a new Brunswick boat for $17,000. He made a $2,500 down payment on it. The bank's loan was for 60 months, a

Rudiy27

John has 17000 - 2500 = 14500 left to pay after the down payment

Then add on the finance charges 14500 + 4900 = 19400

The total of $19400 is to be paid over 60 monthly instalments, so John will be paying 19400÷60 = $323.30 per month

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2 years ago

HELP!!!! 10 points to offer!!

torisob [31]

Hopefully it’s none i believe

8 0

2 years ago