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julsineya [31]
4 years ago
6

Help please!!!! It geometry and i have no clue wht im doing

Mathematics
1 answer:
irakobra [83]4 years ago
7 0

Step-by-step explanation:

21. supplementary angles (add up to 180°)

22. vertical angles (congruent)

23. vertical angles (congruent)

24. supplementary angles (add up to 180°)

25. supplementary angles (add up to 180°)

26. supplementary angles (add up to 180°)

27. supplementary angles (add up to 180°)

28. supplementary angles (add up to 180°)

29.

(complementary angles)

4x+3+x-8=90\\5x-5=90\\5x=95\\x=19\\

30.

(supplementary angles)

9x-4+4x-11=180  

13x-15=180\\13x=195\\x=15

31.

(vertical angles)

x-15=60\\x=75

32.

(supplementary angles)

63+11x+2+5x-13=180\\52+16x=180\\16x= 128\\x= 8

33.

(complementary angles)

x+28+6x-15=90\\7x+13=90\\7x=77\\x=11

Hope this helps!

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What is the fraction form of the following decimal expansion? 0.3 repeating?
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Answer: 1/3

Step-by-step explanation:

If you enter 1/3 into a calculator, you should get something around .3333336

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Write the equation of a line that is perpendicular to y=0.25x-7y=0.25x−7y, equals, 0, point, 25, x, minus, 7 and that passes thr
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Given equation of line y=0.25x-7.

On comparing given equation with slope-intercept form y=mx+b.

We get m=0.25.

0.25 could be written 25/100 in simplest fractions 1/4.

Line are perpendicular.

Therefore, slope of the perpendiular line would be reciprocal and opposite in sign of the given slope of the line.

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8. A right triangle has a perimeter of 60 cm. The legs have a ratio of 5:12. The hypotenuse is twice the
lakkis [162]

Answer:

a=24

b=10

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Step-by-step explanation:

Perimeter is the sum of the sides (a+b+c=60)

The legs (a and b) have a ratio of 5:12, which means that 5a=12b, which can be simplified to \frac{5}{12} a=b, where b will be the smaller leg.

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Let's plug these in to get one variable:

a+b+c=60\\a+b+2b+6=60\\a+\frac{5}{12}a+2(\frac{5}{12}a)+6=60\\\frac{12}{12}a+\frac{5}{12}a+\frac{10}{12}a+6=60\\\frac{12}{12}a+\frac{5}{12}a+\frac{10}{12}a=54\\\frac{27a}{12}=54\\27a=648\\a=24

Now that we have a, we can plug it in to our previous equations to find our other sides:

5a=12b\\5(24)=12b\\120=12b\\10=b

c=2b+6\\c=2(10)+6\\c=20+6\\c=26

Double-checking:

a+b+c=60\\24+10+26=60\\60=60

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