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Mila [183]
3 years ago
11

How to add or subtract this polynomial

Mathematics
1 answer:
AURORKA [14]3 years ago
4 0

Answer:

18x^2 + 9x - 5

Step-by-step explanation:

Combine like terms:

(9x^2-8) + (9x^2+9x+3)

= 9x^2 + 9x^2 + 9x - 8 + 3

= 18x^2 + 9x - 5

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mrs.smith owned one square mile of land. when she moved she gave an equal part of the land to her 3 children,amy,brianna ,and ch
Black_prince [1.1K]

Mrs.smith divided one square mile of land to her 3 children,amy,brianna ,and chad.

1 mile is divided among each children . so the fraction of land each one get is \frac{1}{3}

Amy's land = \frac{1}{3}

Brianna's land = \frac{1}{3}

Chad's land = \frac{1}{3}

Amy decided to divide her portion of the land equally between her 2 children.

We know Amys land = 1/3

1/3 is divided among two children so we divide the fraction by 2

\frac{\frac{1}{3}}{2}= \frac{1}{3} * \frac{1}{2}

= \frac{1}{6}

\frac{1}{6} fraction of mrs. smith's land one of amy's children own.

Chad divided his land equally among his 6 children

We know Amys land = 1/3

1/3 is divided among 6 children so we divide the fraction by 6

\frac{\frac{1}{3}}{6}= \frac{1}{3} * \frac{1}{6}

= \frac{1}{18}

\frac{1}{18} fraction of mrs. smith's land one of Chad's children own.

4 0
4 years ago
Multiply (3a + 5)2<br>A9a2 + 30a + 25<br>B 25a2 + 15a + 9<br>C a2 + 3a + 25<br>D 5a2 + 15a + 9​
oksano4ka [1.4K]

Answer:

9 a^2 + 30 a + 25 the anwser is A

Step-by-step explanation:

Expand the following:

(3 a + 5)^2

(3 a + 5) (3 a + 5) = (3 a) (3 a) + (3 a) (5) + (5) (3 a) + (5) (5) = 9 a^2 + 15 a + 15 a + 25 = 9 a^2 + 30 a + 25:

Answer: 9 a^2 + 30 a + 25

4 0
3 years ago
If the area of a floor is 6 and the legnth is x and the width is x+1 then find the legnth and width
ELEN [110]
If x=2
length=2
width=2+1
=3

length × width = area
2×3=6

the answer for length is 2 ,while for the width is 3
5 0
4 years ago
Read 2 more answers
What is the quotient of 0.72 ÷ -0.9
Marina CMI [18]

0.72 ÷ -0.9 = -0.8

The quotient is -0.8.

4 0
4 years ago
Read 2 more answers
1/5(x + 0.5) + 5.24 = 3/2x + 7/10(x + 2.2)<br> Solve for x
luda_lava [24]

Answer:

x=19/10

Step-by-step explanation:

abcdefghijklmnopqrstuvwxyz

6 0
3 years ago
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