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3 years ago

12

Write an equation in point-slope form of the line that passes through (-2,14) and is perpendicular to the line whose intercepts

are (a,0) and (0,b) if a=3b

1 answer:

AleksAgata [21]3 years ago

8 0

Answer:

0.98

Step-by-step explanation:

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Solve the quadratic equation x2+8x−30=0 by completing the square.

diamong [38]

Answer:

$\bold{x=-4\pm\sqrt{46}}$

Step-by-step explanation:

$(a+b)^2=a^2+2ab+b^2\\\\\\x^2+8x-30=0\\\\\underbrace{x^2+2\cdot x\cdot 4+4^2}-4^2-30=0\\\\{}\qquad(x+4)^2\,-\,16-30=0\\\\{}\qquad\ \ (x+4)^2=46\\\\ {}\qquad\ \ x+4=\pm\sqrt{46}\\\\ {}\qquad\ \ x=-4\pm\sqrt{46}$

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3 years ago

1. The diameter of one side of a 10-foot log is approximately 13 inches. The diameter of the other side of the log is approximat

LuckyWell [14K]

To best estimate the volume of the log, we assume that the diameter is the average of the diameters at both ends giving us 12 inches as the diameter. Thus, the radius is equal to 0.5 ft. The volume of the log is calculated through the equation,
V = πr²h = π(0.5 ft)²(10 ft) = 7.85 ft³

7 0

3 years ago

Evaluate 5x – 2y + (7x – y) for x = 7 and y = –2

Lynna [10]

Answer:

90

Step-by-step explanation:

5x – 2y + (7x – y)

Combine like terms

12x -3y

Let x = 7 and y = -2

12(7) -3(-2)

84 +6

90

6 0

3 years ago

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4 2/5 × 10 using distributive property

gladu [14]

Answer 1 3/5 × 40=64

Step-by-step explanation:

4×2/5=1 3/5 4×10=40

6 0

4 years ago

The temperature in Minnesota was -8°F one day. On the same day, the temperature was 12° higher in Indiana. What was the temperat

ahrayia [7]

Answer:

4

Step-by-step explanation:

-8 +12=4

there has to be 20 characters so thi is what I'm putting.

6 0

3 years ago

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