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3 years ago

Find the sum of 4x^3 + 6x^2 +2x - 3 and 3x^3 +3x^2 -5x -5

Mathematics

1 answer:

r-ruslan [8.4K]3 years ago

3 0

Answer:

7x³ + 9x² - 3x - 8

Step-by-step explanation:

4x³ + 6x² + 2x - 3 + 3x³ + 3x² - 5x - 5 ← collect like terms

= 7x³ + 9x² - 3x - 8

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Is 3/5 greater then 3/6

Tcecarenko [31]

Yes, for 3/5= 18/30 and 3/6= 15/30

4 0

3 years ago

PLEASE ANSWER WITH AN EXPLANATION! THANK YOU

lubasha [3.4K]

Answer:

$\large\boxed{A=153\ cm^2}$

Step-by-step explanation:

<em>Look at the picture.</em>

We have

square with side length a = 9

trapezoid with base lengths b₁ = 9 and b₂ = 6 and the height length h = 6

right triangle with legs lengths l₁ = 3 + 6 = 9 and l₂ = 6

The formula of an area of a square

$A=a^2$

Substitute:

$A_I=9^2=81\ cm^2$

The formula of an area of a trapezoid:

$A=\dfrac{b_1+b_2}{2}\cdot h$

Substitute:

$A_{II}=\dfrac{9+6}{2}\cdot6=\dfrac{15}{2\!\!\!\!\diagup_1}\cdot6\!\!\!\!\diagup^3=(15)(3)=45\ cm^2$

The formula of an area of a right triangle:

$A=\dfrac{l_1l_2}{2}$

Substitute:

$A_{III}=\dfrac{(9)(6)}{2}=\dfrac{54}{2}=27\ cm^2$

The area of the shape:

$A=A_I+A_{II}+A_{III}\\\\A=81+45+27=153\ cm^2$

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3 years ago

Philip saves $8 each month. How many months will it take him to save at least $60?

mars1129 [50]

7.5 months for him to save up to 60 ;)

8 0

3 years ago

Read 2 more answers

LOOK AT THE PHOTO PLEASE

Alex Ar [27]

Answer:

The answer to the question provided is 11.

Step-by-step explanation:

$\: \: \: \: \: 5x + 9 = 6x - 2 \\ \frac{ - 5x \: = - 5x }{9 = 1x - 2} \\ \frac{ + 2 \: \: \: \: = + 2}{ \frac{11}{1} = \frac{1x}{1} } \\ 11 = x$

[I apologize if the answer to the question provided is inaccurate]

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2 years ago

Which number line represents the solution to the inequality –4w + 7 < 75 ?

timama [110]

Answer:

w > − 17

Step-by-step explanation:

6 0

2 years ago