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klio [65]
3 years ago
15

Solve by completing the square. x2 + 12x + 8 = 0

Mathematics
1 answer:
Tatiana [17]3 years ago
3 0
X= -4/7 please help me out now and answer number 10 on my questions
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PLEASE HELPPPPP!!!!!!!!!!!!!!! SHOW WORK
larisa [96]

Answer:

  • 17. A. 180 in²
  • 18. B. 234 in²

Step-by-step explanation:

#17

<u>Total surface area is:</u>

  • A = 8(3*2 + 6*2) + 2(3*6) = 180 in²

Correct option is A

#18

<u>Total surface area is:</u>

  • A = 2(9*9) + 4(2*9) = 234 in²

Correct option is B

5 0
3 years ago
If FE measures 20 centimeters, the approximate area of circle B is what
MAXImum [283]

If FE measures 20 cm, then the area is 314 cm², if BE measure 3.5 cm, then the area is 38.5 cm², if AB measures 11 cm, then the area is 380 cm² and is EF measures 12 cm, then the area is 113 cm².

Area of a circle:

A = π r²

r = 1 /2 of diameter.

FE is the diameter

r = 20 / 2

r = 10 cm

Area of circle using FE:

A =  π ( 10 )² = π × 100 = 314 cm²

BE is a radius:

Area = π × 3.5² = π × 12.25 = 38.465

A = 38.5 cm²

AB is a radius:

Area = π × 11²
A = π × 121

A = 379.94 = 380 cm²

EF is a diameter:

r = 12 / 2 = 6 cm

Area = π × 6²

A = π × 36

A = 113.04 = 113 cm²

Therefore, if FE measures 20 cm, then the area is 314 cm², if BE measure 3.5 cm, then the area is 38.5 cm², if AB measures 11 cm, then the area is 380 cm² and is EF measures 12 cm, then the area is 113 cm².

Learn more about area here:

brainly.com/question/25292087

#SPJ9

Your question was incomplete, Please refer the content below:

1) if FE measures 20 centimeters, the approximate area of circle B is what?

2) if BE measures 3.5 centimeters, the approximate area of circle B is what?

3) if AB measures eleven centimeters, the approximate area of circle B is what

4) If EF measures twelve centimeters, the approximate area of circle B is what?

6 0
1 year ago
The number of words Latisha can text, y,
lyudmila [28]

Answer for A it’s 24

6 0
2 years ago
What is the name for the total area of the surface of a solid?prism area net area surface area facial area
ivolga24 [154]

Answer:

Surface Area

Step-by-step explanation:

You are calculating the measurements for the surface of the prism. The interior is volume.

4 0
3 years ago
Read 2 more answers
The equation of the line of best fit of a scatter plot is y = 6x − 9. What is the slope of the equation?
nignag [31]
The slope of the equation is 6
8 0
3 years ago
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