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3 years ago

Calculate the perimeter of a square with vertices on a circle of diameter 4 cm

Mathematics

1 answer:

posledela3 years ago

3 0

Answer:

I dont like sqaures.

Step-by-step explanation: Their pointy.

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49 decreased by twice a number

saveliy_v [14]

Answer:

3x-x+2=4

Step-by-step explanation:

6 0

3 years ago

Evaluate the following formulas d = rt Find t.

MissTica

D/r , i think , i’m not sure if it is correct

8 0

3 years ago

What is the equation in slope-intercept form of the line that passes through the points (−26, −11) and (39, 34)?

Scrat [10]

The equation in slope-intercept form of the line passing through the given points is: C. $y = \frac{9}{13}x + 7$

Given the following points:

Points on the x-axis = (-26, 39)

Points on the y-axis = (-11, 34)

To find the equation in slope-intercept form of the line passing through the given points:

Mathematically, the equation of slope is calculated by using this:

$Slope. \;m = \frac{Change \; in \; y \;axis}{Change \; in \; x \;axis} \\\\Slope. \;m = \frac{y_2 - y_1}{x_2 - x_1}$

Substituting the given points, we have:

$Slope. \;m = \frac{34 - [-11]}{39 - (-26)}\\\\Slope. \;m = \frac{34\; + \;11}{39 \;+ \; 26}\\\\Slope. \;m = \frac{45}{65}\\\\Slope. \;m = \frac{9}{13}$

The standard form of an equation of line is given by the formula;

$y = mx + b$

Where:

x and y are the points.

m is the slope.

b is the intercept.

We would find the intercept:

$-11 = \frac{9}{13}(-26) + b\\\\ -11 = -18 + b\\\\b = -11 + 18$

Intercept, b = 7

The equation in slope-intercept form of the line is:

$y = \frac{9}{13}x + 7$

3 0

3 years ago

PLEASE HELP ME WITH IT.

scoundrel [369]

OK. I did it. Now let's see if I can go through it without
getting too complicated.

I think the key to the whole thing is this fact:

 A radius drawn perpendicular to a chord bisects the chord.

That tells us several things:

-- OM bisects AB.
 'M' is the midpoint of AB.
 AM is half of AB.

-- ON bisects AC.
'N' is the midpoint of AC.
 AN is half of AC.

-- Since AC is half of AB,
 AN is half of AM.
 a = b/2

Now look at the right triangle inside the rectangle.
'r' is the hypotenuse, so

 a² + b² = r²

But a = b/2, so (b/2)² + b² = r²

(b/2)² = b²/4 b²/4 + b² = r²

Multiply each side by 4: b² + 4b² = 4r²
 - - - - - - - - - - -
 0 + 5b² = 4r²
Repeat the
original equation: a² + b² = r²

Subtract the last
two equations: -a² + 4b² = 3r²

Add a² to each side: 4b² = a² + 3r² . <=== ! ! !

7 0

3 years ago

Round off to the nearest 3,142

Bezzdna [24]

Just put 3.150 lol that what I did

5 0

3 years ago