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goblinko [34]
2 years ago
11

Multiplying and factoring polynomial expressions (9th grade)

Mathematics
1 answer:
lutik1710 [3]2 years ago
5 0

Answer:

1. 2(a^2 + 3a + 9)

2. 5(x^2 - 1)

3. 3(t + 8)(t - 2)

4. n(4 - n)

Step-by-step explanation:

For 1, you can only factor out the constant from each.

For 2, you can also only factor out the constant, but remember that you include the 1 when dividing 5 by 5.

For 3, you can factor out the constant and the variables.

For 4, you can only factor out the variable.

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Can someone please help me?
kotykmax [81]

Answer:part a=4.6 part b=2.6

Step-by-step explanation:part a= first make sure to know which direction is which next you would end up making a triangle with the legs as 1.7 and 4.3 and use pythagorean theorem a^2+b^2=c^2 so 1.7^2 + 4.3^2= c^2 1.7^2=2.89 4.3^2=18.49 2.89+18.49=21.38 so now you square root 21.38 to get 4.62385 so it equals 4.6

part b = is basically the same thing except they gave you 3.1 as c and 1.7 as a so you would put it as c^2 - a^2=b^2 so 9.61 - 2.89= 6.72 then square root it to get 2.592296 which means it equals 2.6

3 0
3 years ago
Two numbers total 66 and have a difference of 16
max2010maxim [7]
x,y-\ two\ numbers\\\\
 \left \{ {{x+y=66} \atop {x-y=16}} \right. \\+-----\\Addition\ method\\\\2x=82\ \ \ |divide\ by\ 2\\\\
x=41\\y=66-x\\y=66-41=25\\\\Numbers\ are:\ 41\ and\ 25.
6 0
3 years ago
A compnay has a spherical storage tank which is in need of painting. The radius of the tank is 36ft. The type of paint used will
Alexxandr [17]
The surface area of a sphere is:  4pr^2

(4p(36^2)ft^2)(gal/160ft^2)

(5184p ft^2)(gal/160ft^2)=32.4p gal which is approximately:

101.78 gal

So the company must purchase 102 gallons of paint.
7 0
3 years ago
Which of the following grids correctly graphs the points A (3, 1), B (0, 3), and C (1, 3)? A. A coordinate plane has an x-axis f
cricket20 [7]

Answer:

Step-by-step explanation:

B. A coordinate plane has an x axis from 0 to 5 in increments of 1 and a y axis from 0 to 5 in increments of 1. Point A (3,1) is plotted 3 units to the right and 1 unit above the origin. Point B (0,3) is plotted 3 units above the origin. Point C (1,3) is plotted 1 unit to the right and 3 units above the origin.

7 0
3 years ago
Decompose fraction 2 3/4
ludmilkaskok [199]

Answer:

11 * 1/4

Step-by-step explanation:

Hi!

Since to decompose a fraction means to basically take it apart, that's all we have to do!

Breaking down the fraction, we can see that it is composed of a bunch of 1/4.

(As an improper fraction below.)

\frac{11}{4}.

That's just 11 \cdot \frac{1}{4}.

Thus, the answer is \boxed{11\:\cdot\:\frac{1}{4}}.

Hope this helps!

5 0
3 years ago
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