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user100 [1]
3 years ago
6

Help me out please!!!!!!

Mathematics
1 answer:
inn [45]3 years ago
4 0

Answer:

C.

Step-by-step explanation:

Because the vertical line is the line that is parallel to the y-axis,

(V) : x = 1...because it only passes through 1 and has a gradient of (0)

The horizontal line is the line that is parallel to the x-axis

(H) : y = 6...because it passes through 6 and has a gradient of 0

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Given: (5y-1)/(2)=7 prove: y=3
Komok [63]
True because 5(3)=15-1=14 and 14/2=7
3 0
3 years ago
Can I get some help on this
salantis [7]
Do you still need help?
7 0
4 years ago
Please help!!! i'll give brainliest and offering 20 pts each!!!
Aleks04 [339]

Answer:

  • 5(x +1.5)^2
  • 10(x +1)^2
  • 1/4(x +2)^2
  • 3(x +5/6)^2

Step-by-step explanation:

When your desired form is expanded, it becomes ...

  a(x +b)^2 = a(x^2 +2bx +b^2) = ax^2 +2abx +ab^2

This tells you the overall factor (a) is the leading coefficient of the given trinomial. Factoring that out, you can find b as the root of the remaining constant.

a) 5x^2 +15x +11.25 = 5(x^2 +3x +2.25) = 5(x +1.5)^2

b) 10x^2 +20x +10 = 10(x^2 +2x +1) = 10(x +1)^2

c) 1/4x^2 +x +1 = 1/4(x^2 +4x +4) = 1/4(x +2)^2

d) 3x^2 +5x +25/12 = 3(x^2 +5/3x +25/36) = 3(x +5/6)^2

_____

<em>Additional comment</em>

If you know beforehand that the expressions can be factored this way, finding the two constants (a, b) is an almost trivial exercise. It gets trickier when you're trying to write a general expression in vertex form (this form with an added constant). For that, you must develop the value of b from the coefficient of the linear term inside parentheses.

8 0
3 years ago
8.
Tpy6a [65]

Area of the shaded region = area of big square minus area of little square.

Here is the set up:

Let A_s = area of shaded region.

A_s = (2x + 2)(3x - 4) - [(x - 3)(x - 6)]

Take it from here.

3 0
3 years ago
Read 2 more answers
Madie drove 200 miles at a speed of 50 miles per hour. Which equation will help you find the number of hours she was driving? St
aalyn [17]

Answer:

  StartFraction 50 miles Over 1 hour EndFraction = StartFraction 200 miles Over question mark hours EndFraction

Step-by-step explanation:

For constant speed, miles and hours are proportional. One possible equation is ...

  \dfrac{50\,\text{miles}}{1\,\text{hour}}=\dfrac{200\,\text{miles}}{?\,\text{hours}}\qquad\text{matches the first choice}

_____

<em>Comment on the solution</em>

I personally like to put the unknown in the numerator, so the equation can be solved in one step. The equation above requires two steps: one to cross-multiply, and one to divide by 50.

I might write the equation as ...

  (? hours)/(200 mi) = (1 hour)/(50 mi) . . . . multiply by 200 mi to solve

Another way to write the equation is matching the ratios of times to corresponding miles:

  (? hours)/(1 hour) = (200 mi)/(50 mi)

This only requires simplification to solve it: ? = 4.

3 0
4 years ago
Read 2 more answers
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