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timama [110]
3 years ago
5

(17) geometry help pls

Mathematics
1 answer:
Semenov [28]3 years ago
8 0
Notice how the y coordinates of points Z and X are both b. It doesn't matter what the x coordinates are. Because both y coordinates are b, this means we have a horizontal line of slope 0.

For points Y and W, the x coordinate is both 'a'. The y coordinate doesn't matter. Since the x coordinate here is both 'a', we have a vertical line with an undefined slope.

ZX is a completely horizontal line
YW is a completely vertical line
Therefore, the diagonals are perpendicular

Note: we can't use the negative reciprocal idea since there is no reciprocal of 0<span />
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Three expresions for 20% of48
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If the two rectangles are similar, their sides must be proportional. We can figure this out by setting up a proportion. We need to make sure to match up the correct sides though. We know the two longer sides must match up, so 6 goes with 60, and 3 goes with 30:

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3 years ago
Convert 374F in base 16 to octal​
irga5000 [103]
<h2>Answer:</h2>

33517

<h2>Step-by-step explanation:</h2>

<em>Method 1</em>

Given:

374F in base 16

To convert to octal;

(i) convert each digit in the number to binary

3 = 0011

7 = 0111

4 = 0100

F = 1111

(ii) join the bits together starting from the first i.e

374F = 0011 0111 0100 1111

(iii) starting from the right to left, group the bits together, each group having 3 bits

374F = 0 011 011 101 001 111

(iv) the group with number of bits less than 3 should be padded with zero.

374F = 000 011 011 101 001 111

(v) convert each of the groups in (iv) above to decimal as follows:

000 = 0

011 = 3

011 = 3

101 = 5

001 = 1

111 = 7

(vi) combine the result above to get;

033517

<em>The first zero can be removed</em>

33517

Therefore, the number in octal is 33517₈

<em>Method 2</em>

Given:

374F in base 16

To convert to octal;

i) convert the number to decimal as follows;

a. Multiply each digit by 16 raised to the power of one less than their position starting from the leftmost digit.

<em />

<em>=> 3 is at position 4, so we have</em>

3 x 16⁴ ⁻ ¹ = 3 x 16³

<em>=> 7 is at position 3, so we have</em>

7 x 16³ ⁻ ¹ = 7 x 16²

<em>=> 4 is at position 2, so we have</em>

4 x 16² ⁻ ¹ = 4 x 16¹

<em>=> F is at position 1, so we have</em>

F x 16¹ ⁻ ¹ = F x 16⁰

b. Add each of the terms found in (a) together.

(3 x 16³) + (7 x 16²) + (4 x 16¹) + (F x 16⁰)

c. Remember that F = 15 in decimal. Therefore, substitute F = 15 into the result in (b)

(3 x 16³) + (7 x 16²) + (4 x 16¹) + (15 x 16⁰)

d. Solve the result in (c)

(3 x 4096) + (7 x 256) + (4 x 16) + (15 x 1)

12288 + 1792 +64 + 15

14159

Therefore,

374F in decimal is 14159

(b) Now convert the decimal to octal by dividing by 8 and noting the remainder.

<u>8 | 14159</u>

<u>8 | 1769</u> r 7

<u>8 | 221</u> r 1

<u>8 | 27</u> r 5

<u>8 | 3</u> r 3

<u>   | 0</u> r 3

Taking the remainders from bottom up gives

33517₈

Therefore, the number in octal is 33517₈

<em></em>

<em></em>

8 0
3 years ago
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