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Yuliya22 [10]
3 years ago
15

Lines a is perpendicular to line b . Which statement about lines a and b is true ?

Mathematics
1 answer:
sesenic [268]3 years ago
7 0

Answer:

Step-by-step explanation:

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PQR is a right-angled triangle. PQ = 16 cm. PR = 8 cm. Calculate the length of
vlada-n [284]
SOLUTION:

PQR is a right-angle triangle.

Therefore, to solve this problem, we will use Pythagoras theorem which is only applicable to right-angle triangles.

Pythagoras theorem is as displayed below:

a^2 + b^2 = c^2

Where c = hypotenuse of right-angle triangle

Where a and b = other two sides of right-angle triangle

Now we will simply substitute the values from the problem into Pythagoras theorem in order to obtain the length of QR.

c = PQ = 16cm

a = PR = 8cm

b = QR = ?

a^2 + b^2 = c^2

( 8 )^2 + b^2 = ( 16 )^2

64 + b^2 = 256

b^2 = 256 - 64

b^2 = 192

b = square root of ( 192 )

b = 13.8564...

b = 13.86 ( to 2 decimal places )

FINAL ANSWER:

Therefore, the length of QR is 13.86 centimetres to 2 decimal places.

Hope this helps! :)
Have a lovely day! <3
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3 years ago
Which shows the correct solution of the equation, when ?
ch4aika [34]
When the equation is ax+b which is y =ax+b
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If one gallon of paint covers 25 sq. ft., how much paint is needed to cover 40 sq. ft.? i will mark brainliest
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1.6 gallons (so if you can only buy by the gallon, 2 gallons)

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You divide the total area by how much a gallon covers to get the number of gallons needed.

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Step-by-step explanation:

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When constructing a perpendicular line through a point on a line, how can you verify that the lines constructed are perpendicula
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C

Step-by-step explanation:

perpecndicular means they intersect in right angle which is 90°, no matter how long lines are.

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