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frosja888 [35]
3 years ago
6

Someone please help ​

Mathematics
1 answer:
jeyben [28]3 years ago
4 0

Answer:

The first one

Step-by-step explanation:

Because

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Consider the quadratic equation x2 − 6x = 16.
e-lub [12.9K]

Answer:

  1. C) (x − 3)2 = 25
  2. C) Factor out 4 from 4x2 + 40x.

Step-by-step explanation:

1. Adding the square of half the x-coefficient to both sides of the equation will "complete the square." That square is 9, so the result on the right is 16+9 = 25. Only selection C matches.

___

2. To complete the square, you want to be able to put the quadratic into the form a(x -h)^2 = -k. For the purpose, it is most convenient to first factor "a" from the given quadratic. Then you can determine "-h" to be half the x-coefficient inside the parentheses.

Here, that looks like ...

  4(x² +10x) = 80 . . . . . . . . . . step 1: factor out 4

  4(x² +10x +25) = 180 . . . . . add 25 inside parentheses and the same number (4·25) on the right side of the equation

  4(x +5)² = 180 . . . . . . . . . . . written as a square

8 0
3 years ago
Use the form |x-b|<=c or |x-b|>=c to write an absolute value inequality that has the solution set -1<=x<=3.
IgorLugansk [536]

Answer:

Your answer would be:
X = -4

-1 <= -4 <= 3.






Step-by-step explanation:

Have a great rest of your day
#TheWizzer

8 0
2 years ago
Sonia walks to her aunt's house. She leaves home at 1025. She walks a total of 12km at an average speed of 5km/h. Work out the t
lisabon 2012 [21]

Answer: 1249 hrs

Step-by-step explanation:

Sophia walked for 12 km to get to her aunt's house.

She did this at a speed of 5km/h which means that the time taken was:

Time = Distance / Speed

= 12 / 5

= 2.4 hours

2.4 in hours:

= 0.4 * 60 minutes

= 24 minutes

= 2 hours 24 minutes

If she left at 1025, she would arrive at:

= 1025 + 2 hours 24

= 1249 hrs

3 0
3 years ago
What is the measure of angle B in the triangle?
Marat540 [252]

180 - 120 = 60 \\ 60  - 16 = 44 \\ 44 \div 2 = 22
x is 22
hope this helps


8 0
3 years ago
Read 2 more answers
What is the volume of a cylinder with a height of 4xy^4 and a radius of 2x? (The formula fo
OLga [1]

Answer:

volume: \sf 16\pi x^3y^4

given:

  • height: \sf 4xy^4
  • radius: \sf 2x

<u>cylinder volume</u>:

\hookrightarrow \sf \pi r^2h

\hookrightarrow  \sf \pi (2x)^2(4xy^4)

\hookrightarrow  \sf \pi (4x^2)(4xy^4)

\hookrightarrow  \sf 16\pi x^3y^4

3 0
2 years ago
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