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4 years ago

Adding Polynomial Expressions. (SIMPLIFY#1(ab^2+13b-9)+(6-4a+3ab^2)+(a+7b)#2(9x^3-2x^2-x)+(3x)+x^3-4)+(x^2-3x)

Mathematics

1 answer:

Karo-lina-s [1.5K]4 years ago

5 0

Answer: 4ab^2 +20b - 3 -3a

Combine like terms.

Combine ab, b, a terms for #1

Combine x^3, x^2, x terms for #2

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A pair of shoes cost $120 but they are 25% Off;

Sever21 [200]

Answer:

Discount = $30, Final price = $90

Step-by-step explanation:

25% is one quarter. 120/4=30

One quarter of 120 is 30, so - 30 would give discounted price of $90.

Similarly you could think of it like the discounted price is 75% of the original one and do 120x0.75=90 to find 75% of 120.

Hope this helped!

3 0

4 years ago

PLEASE HELP. Simplify the expression <br>-4x - 2 + 3x - 4

shutvik [7]

Answer:

-x-6

Step-by-step explanation:

-4x - 2 + 3x - 4

Combine -4x and 3x -x - 2 - 4

Combine -2 and -4 -x - 6

4 0

3 years ago

Read 2 more answers

−4x + 7y + 5 = 0

Dimas [21]

Yes is A and the solution is that when you add negatives it restart number like 3x - - 3= 0

3 0

4 years ago

Let v = 9. What is the value of r in the equation r = 3 × v + 13? HELP AND I WILL MAKE YOU THE BRAINLIEST

stiv31 [10]

40
3* 9 is 27 and then add 13

7 0

3 years ago

Juwan has a third quiz in math on Friday. His two previous quiz grades were 85 and 72. What must he make on the third quiz for h

VLD [36.1K]

Answer:

$x = 107$

Step-by-step explanation:

Given

$Scores = 85\ and\ 72$

$Average = 88$

Required

Determine the third score

Average is calculated using;

$Average = \frac{\sum x}{n}$

In this case:

$n = 3$

$Average = \frac{\sum x}{n}$

Let the third score be x; So:

$Average = \frac{85 + 72 + x}{3}$

Substitute 88 for Average

$88 = \frac{85 + 72 + x}{3}$

$88 = \frac{157 + x}{3}$

Multiply through by 3

$3 * 88 = \frac{157 + x}{3} * 3$

$264 = 157 + x$

$x = 264 - 157$

$x = 107$

4 0

4 years ago

Adding Polynomial Expressions. (SIMPLIFY#1(ab^2+13b-9)+(6-4a+3ab^2)+(a+7b)#2(9x^3-2x^2-x)+(3x)+x^3-4)+(x^2-3x)​

Adding Polynomial Expressions. (SIMPLIFY#1(ab^2+13b-9)+(6-4a+3ab^2)+(a+7b)#2(9x^3-2x^2-x)+(3x)+x^3-4)+(x^2-3x)