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lutik1710 [3]
3 years ago
11

Find the area of this question

Mathematics
1 answer:
oee [108]3 years ago
7 0
The answer to this question whould be that the area is 20
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1. Name 4 technologies that have helped America develop into a powerful country.
irga5000 [103]
Telephone computers tv microwave
8 0
3 years ago
Y = 4
SSSSS [86.1K]

Answer:

when x=5, y=4

the slope is 0

Step-by-step explanation:

There isn't much to explain.

5 0
3 years ago
enelope determined the solutions of the quadratic function by completing the square. f(x) = 4x2 + 8x + 1 –1 = 4x2 + 8x –1 = 4(x2
Marat540 [252]
The correct question is
<span>Penelope determined the solutions of the quadratic function by completing the square.
f(x) = 4x² + 8x + 1
–1 = 4x² + 8x
–1 = 4(x² + 2x)
–1 + 1 = 4(x² + 2x + 1)
0 = 4(x + 2)²
0 = (x + 2)²
0 = x + 2
–2 = x
What error did Penelope make in her work?

we have that
</span>f(x) = 4x² + 8x + 1
to find the solutions of the quadratic function
let
f(x)=0
 4x² + 8x + 1=0

Group terms that contain the same variable, and move the constant to the opposite side of the equation

 (4x² + 8x)=-1

Factor the leading coefficient 

 4*(x² + 2x)=-1

Complete the square Remember to balance the equation by adding the same constants to each side.

 4*(x² + 2x+1)=-1+4 --------> ( added 4 to both sides)

Rewrite as perfect squares

4*(x+1)²=3

(x+1)²=3/4--------> (+/-)[x+1]=√3/2

(+)[x+1]=√3/2---> x1=(√3/2)-1----> x1=(√3-2)/2

(-)[x+1]=√3/2----> x2=(-2-√3)/2

therefore

the answer is

<span>Penelope should have added 4 to both sides instead of adding 1.</span>
6 0
3 years ago
Read 2 more answers
Use the distributive property to write an equivalent expression: -(n+4)*
stealth61 [152]

Answer: -n-4

Step-by-step explanation:

Distribute the - to n and 4

6 0
3 years ago
What is the equation of the line in slope-intercept form?
Bingel [31]
Y= Mx+b

In the equation of a straight line,the slope is the number "m" that is multiplied on the x, and "b<span>" is the </span>y<span>-intercept (that is, the point where the line crosses the vertical </span>y<span>-axis).</span>
7 0
3 years ago
Read 2 more answers
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