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3 years ago

Points A and B are on the line y = 2x – 1

Mathematics

1 answer:

bonufazy [111]3 years ago

7 0

Answer:

Step-by-step explanation:

a) A(5, __)

Plugin x = 5 in the equation.

y = 2x -1

y = 2*5 - 1

= 10 - 1

y = 9

A(5 , 9)

b) B(___ , -1)

Plugin y = -1 in the equation

y = 2x -1

-1 = 2x - 1 {add 1 to both sides}

-1 + 1 = 2x

0 = 2x

2x = 0

x = 0

B(0 , -1)

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frutty [35]

Answer:

Perimeter = 36.8 ft

Step-by-step explanation:

Step 1: Add the straight sides together

3+3+3+3+3+3 = 18 ft

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The formula for the perimeter of semi-circle: 1/2 π × d

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Now, 1/2π * 6 = 9.4 ft

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2 years ago

Point m is the midpoint of ab¯¯¯¯¯ . am=2x+9, and ab=8x−50. what is the length of am¯¯¯¯¯¯ ?

iogann1982 [59]

Since m is the midpoint of ab, then the following relationship is fulfilled:
$am = \frac{ab}{2}$
Therefore, substituting values we have:
$2x+9 = \frac{8x-50}{2}$
From here, we clear the value of x.
We have then:
$2x+9 = 4x-25$
$9+25 = 4x-2x$
$34 = 2x$
$x = \frac{34}{2}$
$x = 17$
Then, the value of am, is given by substituting x in the expression:
$am=2x+9$
Substituting we have:
$am=2(17)+9$
$am=34+9$
$am=43$
Answer:
the length of am is:
$am=43$

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3 years ago