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3 years ago

I forgot how to do this help please

Mathematics

2 answers:

andrezito [222]3 years ago

8 0

Answer:

- $\frac{8}{9}$

Step-by-step explanation:

By using distributive property, we can multiply each thing inside the parentheses by 3, getting

9w-12=-20.

THen we can add 12 to both sides to eliminate the twelve on the right side

9w-12=-20

+12 +12

Then,

9w= -8

Then we divide each side by 9 to get

w=- $\frac{8}{9}$

ahrayia [7]3 years ago

4 0

Answer:

w = -8/9

Step-by-step explanation:

3(3w-4) = -20

9w-12=-20

9w=-8

W=-8/9

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What is close to 3/4? is it 13/26, 11/32, 1/2, or 3/8

jonny [76]

Answer:

1/2 is the closest at .5

Step-by-step explanation:

13/26 is 1/2

3/8 is . 375

11/32 is .344

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2 years ago

Read 2 more answers

Find the equation of the line.

vovikov84 [41]

Answer:

Step-by-step explanation:

y - (- 3) = - (x + 7)

<em>y = - x - 10</em>

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3 years ago

1. S(–4, –4), P(4, –2), A(6, 6) and Z(–2, 4) a) Apply the distance formula for each side to determine whether SPAZ is equilatera

Aleksandr [31]

Answer:

a) SPAZ is equilateral.

b) Diagonals SA and PZ are perpendicular to each other.

c) Diagonals SA and PZ bisect each other.

Step-by-step explanation:

At first we form the triangle with the help of a graphing tool and whose result is attached below. It seems to be a paralellogram.

a) If figure is equilateral, then SP = PA = AZ = ZS:

$SP = \sqrt{[4-(-4)]^{2}+[(-2)-(-4)]^{2}}$

$SP \approx 8.246$

$PA = \sqrt{(6-4)^{2}+[6-(-2)]^{2}}$

$PA \approx 8.246$

$AZ =\sqrt{(-2-6)^{2}+(4-6)^{2}}$

$AZ \approx 8.246$

$ZS = \sqrt{[-4-(-2)]^{2}+(-4-4)^{2}}$

$ZS \approx 8.246$

Therefore, SPAZ is equilateral.

b) We use the slope formula to determine the inclination of diagonals SA and PZ:

$m_{SA} = \frac{6-(-4)}{6-(-4)}$

$m_{SA} = 1$

$m_{PZ} = \frac{4-(-2)}{-2-4}$

$m_{PZ} = -1$

Since $m_{SA}\cdot m_{PZ} = -1$ , diagonals SA and PZ are perpendicular to each other.

c) The diagonals bisect each other if and only if both have the same midpoint. Now we proceed to determine the midpoints of each diagonal:

$M_{SA} = \frac{1}{2}\cdot S(x,y) + \frac{1}{2}\cdot A(x,y)$

$M_{SA} = \frac{1}{2}\cdot (-4,-4)+\frac{1}{2}\cdot (6,6)$

$M_{SA} = (-2,-2)+(3,3)$

$M_{SA} = (1,1)$

$M_{PZ} = \frac{1}{2}\cdot P(x,y) + \frac{1}{2}\cdot Z(x,y)$

$M_{PZ} = \frac{1}{2}\cdot (4,-2)+\frac{1}{2}\cdot (-2,4)$

$M_{PZ} = (2,-1)+(-1,2)$

$M_{PZ} = (1,1)$

Then, the diagonals SA and PZ bisect each other.

8 0

2 years ago

Please help me GENIUS Rank

riadik2000 [5.3K]

<h2>Hey there!</h2>

<h3>Here's your required mode </h3>

<h3>Refer to the image above </h3>

<h3>And btw,in the earlier question I've done for mean also you can check that again which I've answered earlier. </h3>

<h2>Hope it helps</h2>

4 0

2 years ago

Select the dimensions of a rectangle with a perimeter of 50 inches

kifflom [539]

Answer:

length = 21 inches

Step-by-step explanation:

Missing information

In this question some information is missing the width is not given in the question .The width in this question is 4 inches we have to find the length of the rectangle .

We know that the perimeter of rectangle is given as

$p=2w+2l$ ........................equation(1)

where p=perimeter

w= width

l= length

Now putting the value of width and perimeter in the equation(1) we get ,

$50=2(4)+2l$

50=8+2l

50-8=2l

42=2l

$l\ =\ \frac{42}{2}\ \\ l\ =21\ inches$

Therefore length of the dimension is 21 inches

7 0

2 years ago