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alekssr [168]
3 years ago
6

15. In the diagram AB is parallel to CD. Calculate the value of a. NOT TO SCALE

Mathematics
1 answer:
VikaD [51]3 years ago
5 0

Same-side interior angles, which are shown here, are supplementary, which means that they add up to 180 degrees.

5a + a = 180

6a = 180

a = 30 degrees

Hope this helps! :)

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What is the Circumference of a circle if its radius in 15 inches? Please help always a procrastinator in math! Thanks!
Tems11 [23]
Circumference Formula:
C = 2\pi \times R
R = Radius = 15 in

C = 2\pi \times 15
C = 30\pi \: inches

Or C = 94,2 inches
7 0
3 years ago
3 numbers are in arithmetic progression their sum is15 and their product is 80 determine the 3 numbers
Mashcka [7]

Answer:

2, 5, 8

Step-by-step explanation:

For starters, let us assume that the numbers are x-d, x, and x+d.

Where d is the common difference between terms.

This mean that we can say, from the question

x-d + x + x+d = 15

3x = 15,

x = 5,

This means that the terms are 5, 5-d and 5+d.

On the other hand,

(5-d) * 5 * (5+d) = 80

(5-d) * (5+d) = 80/5

(5-d) * (5+d) = 16

25 - d² = 16

d² = 9

d = + or - 3.

Finally, the three numbers will be 2, 5, and 8. On the flipside, their sum and product are 15 and 80.

6 0
3 years ago
Which statements are true about these lines? Select three options.
shepuryov [24]
RS is perpendicular to MN and PQ.


We can use the slopes of these lines to determine the answer.
Slope is given by the formula
m=.

Using the coordinates for M and N, we have:
m=.

Since PQ is parallel to MN, its slope will be as well, since parallel lines have the same slope.

Using the coordinates for points T and V in the slope formula, we have
m=.

This is not parallel to MN or PQ, since the slopes are not the same.
We can also say that it is not perpendicular to these lines; perpendicular lines have slopes that are negative reciprocals (they are opposite signs and are flipped). This is not true of TV either.

Using the coordinates for R and S in the slope formula, we have
m=. Comparing this to the slope of RS, it is flipped and the sign is opposite; they are negative reciprocals, so they are perpendicular.
8 0
3 years ago
Read 2 more answers
Does anyone have a word problem idea for this equation 1.25x = 0.75x + 50
PSYCHO15rus [73]

Answer: Keke, do you love me? Are your riding?



Idk either.


Tips: make it something about money, and the k should stand for kittens

5 0
3 years ago
The perimeter of a rectangle is 68cm.
andrew11 [14]

Answer:

9

Step-by-step explanation:

The equation for the perimeter is 2(L+B)

Since the perimeter is 68

Divide it by two

Subtract the quotient by 25 and

Yes!!! We got the answer

7 0
3 years ago
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