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2 years ago

30 points!!!

Mathematics

1 answer:

lara31 [8.8K]2 years ago

7 0

Answer:

SAS postulate

Step-by-step explanation:

AD (common)

AC = BD (both are diameters)

Angle COD = Ange AOD (vertically opposite angles)

Angle CAD = Angle BAD (angle on the circumference is half the angle at the centre)

Therefore, ABD and DCA are congruent by SAS postulate

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How can i evaluate this expression 3/2-4/7

siniylev [52]

$\frac{3}{2} - \frac{4}{7}$
$= \frac{3}{2} + \frac{-4}{7} 
$
$= \frac{21}{14} + \frac{-8}{14}$
$= \frac{21+-8}{14}$
$= \frac{13}{14}$
<span>Decimal: 0.928571</span>

4 0

3 years ago

Read 2 more answers

What is 5(x-2)-14x when x=4

nevsk [136]

Answer:

-46

Step-by-step explanation:

5 (x - 2) - 14x. x=4

5 (4 - 2) - 14(4) (distribute)

20 - 10 - 14(4) (multiply)

20 - 10 - 56 (subtract and solve.)

10 - 56 = -46 - solution

hope this helps (:

6 0

2 years ago

Ali paints with watercolors on a sheet of paper 20 in. wide by 15 in. high. He then places this sheet on a mat so that a uniform

oksano4ka [1.4K]

Answer:

10 in

Step-by-step explanation:

Let x be the width of the mat width showing around the picture. Since the sheet is 20 in wide by 15 in high, and the perimeter of the mat is 110 in. We have the following equation:

2*(20 + x + 15 + x) = 110

35 + 2x = 55

2x = 20

x = 20/2 = 10 in

7 0

2 years ago

I am one of the numbers represented on a number line when you divide the segment between -15 and 25 into 4 equal parts. I am pos

Aliun [14]

Answer:

2, 3, 5, 7, 11, 17, 19, 23

Step-by-step explanation:

The segment between - 15 and 25 has 40 numbers given by

25 - -15

= 25 + 15

= 40

Divided into 4 segments, each would contain 10 numbers such that the

1st segment is from -15 to -5 (which is -15 + 10)

2nd segment is from -5 to 5 (which is -5 + 10)

3rd segment is from 5 to 15 (which is 5 + 10)

4th segment is from 15 to 25 (which is 15 + 10)

Given that the unknown number is prime and positive this may be

2 or 3 or 5 from the 2nd segment

7 or 11 from the third segment

17 or 19 or 23 from the 4th segment

5 0

2 years ago

true or false: Given the coordinates of two points in the plane, you can use either the distance formula or the Pythagorean theo

Vladimir [108]

Since the distance formula is literally based off of the theorem, yes

8 0

3 years ago