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gladu [14]
3 years ago
14

Rewrite x^2+9 as a product using complex numbers and the polynomial identity below

Mathematics
1 answer:
Verdich [7]3 years ago
5 0

Answer:

(x + 3i)(x - 3i)

Step-by-step explanation:

Express x² + 9 as a difference of squares which factors in general as

a² - b² = (a + b)(a - b), thus

x² + 9

= x² - (3i)²

= (x + 3i)(x - 3i)

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Suppose each square on the grid shown is 1 cm by 1 cm. Estimate the area of the figure.
finlep [7]

Answer:

10cm cm2

Step-by-step explanation:

5 0
3 years ago
Find ten rational numbers between -2/3 and 2/3
Mama L [17]

Answer:

-2/3= -20/30

2/3 = 20/30

so rational numbers in between are

-19/30, -18/30, -17/30,........ -1/30, 0,+1/30,.............+17/30, +18/30, +19/30

so you can write as many as you like

8 0
3 years ago
Lin says that an octagon has six ideas.chris says that it has eight sides.whose statement is correct?
user100 [1]
Chris is correct.
An octagon has 8 sides.
A hexagon has 6 sides which is what Lin said.
5 0
3 years ago
Solve A= 1/2bh for b. Then find the base of a triangle with a height of 6 inches and an area of 24 square inches.
lions [1.4K]

Answer:

The breadth of the triangle is 8 inches.

Step-by-step explanation:

Given that the area of the triangle is 24 sq inches and that the height is 6 inches

1/2 * b * 6 =24

b * 3= 24

b=8 inches

3 0
3 years ago
The system of equations y = - 2x + 3 and y = xis graphed. What is the solution to the system of equations ?
nata0808 [166]

Answer:

(1,1)

Step-by-step explanation:

we have

y=-2x+3 ----> equation A

y=x ----> equation B

we know that

The solution of the system of equations is the intersection point both graphs

The intersection point both graphs is the point (1,1)

see the given graph

therefore

The solution is the point (1,1)

Remember that

if a ordered pair is a solution of a system of equations then the ordered pair must satisfy both equations of the system

<u><em>Verify</em></u>

Substitute the value of x=1 and y=1 in each equation and analyze the result

<em>Equation A</em>

1=-2(1)+3

1=1 ---> is true

so

The ordered pair satisfy the equation A

<em>Equation B</em>

1=1 ---> is true

so

The ordered pair satisfy the equation B

therefore

The ordered pair (1,1) is a solution of the system because satisfy both equations

5 0
3 years ago
Read 2 more answers
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