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GenaCL600 [577]
3 years ago
8

Which pair of equations represents two perpendicular lines? Option A: -3x +2y = 10 and 3y = 2x +12 Option B: 2x + 5y = 45 and y

+ 2/5x = -9 Option C: x= 4y +4 and x +4y=4 Option D: 7x + 4y= 20 and y-3=4/7x
Mathematics
1 answer:
jek_recluse [69]3 years ago
8 0
For the equation of the line expressed as Ax + By + C = 0, the value of the slope (m) is calculated by -A / B. For perpendicular lines, the slope of one should be the negative reciprocal of the other. From the choices given, the lines that are perpendicular is Option A. 
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Solve the quadratic equation by completing the square. x2 + 6x + 7 = 0
ruslelena [56]
Hello,

x²+2*3x+3²+7-9=0
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==>(x+3-√2)(x+3+√2)=0
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7 0
3 years ago
How to simplify this question
ANEK [815]
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6 0
4 years ago
The expression -16t ^2+ 48t can be written as the product of -16t with which of the following?
Gelneren [198K]

Answer:

4) t -3

Step-by-step explanation:

-16t² = -16 * t * t

48t = (-16t) * (-3)

-16t² + 48t = (-16t) * t + (-16t) *(-3)

                = (-16t) [ t - 3]

8 0
3 years ago
18 m<br>Radius -<br>Diameter<br>Area<br>ircumference
Elodia [21]
Diameter is 18

radius is half of diameter so 9

area is radius*pi ^2 which is 88.83

circumference is diameter * pi so 18*pi = 56.55
6 0
3 years ago
Only people who know the answer
polet [3.4K]

Answer:

156ft of material.

Step-by-step explanation:

Since the garden path borders the garden and is 3 feet wide, it increases the side lengths of his garden by 3 feet on each side. Then we just find the perimeter using the new values:

P=36+36+42+42=156

If this helped, a brainliest answer would be greatly appreciated!

5 0
3 years ago
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