MATHEMATICS HIGH SCHOOL

A, B & C form a triangle where ∠ BAC = 90°. AB = 13.5 mm and CA = 3.2 mm. Find the length of BC, giving your answer rounded to 1 DP.

Answers

Answer 1
Answer:

Answer:

13.9

Step-by-step explanation:

Use Pythagorean Theorem:

Both of the lengths given are the legs,

13.5^2 + 3.2^2 = c^2

182.25 + 10.24 = c^2

192.49 = c^2

13.87 = c

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Is 6 rational or irrational??

Answers

Answer:

6 is rational.

Step-by-step explanation:

6 is rational because it is classified as a natural/counting number and a whole number.

Answer:

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Step-by-step explanation:

A cable 90.6 meters long is cut into two pieces so that one piece is 37.2 meters longer than the other. Find the length of each piece of cable.

Answers

Answer:

53.4

Step-by-step explanation:

It said cut that means subtraction also in different length. So you subtract 90.6-37.2=53.4

Answer:

26.7 meters and 63.9 meters

Step-by-step explanation:

37.2 + 2x = 90.6

-37.2           -37.2

          2x = 53.4

53.4 ÷ 2 = 26.7 meters

26.7 + 37.2 = 63.9 meters

63.9 + 26.7 = 90.6 meters

Hope that helps.

Find a cubic function with the given zeros. 7, -3, 2

Answers

x = 7, -3, 2
(x - 7)(x + 3)(x - 2) = 0
(x - 7)(x^2 + x - 6) = 0
x^3 - 6x^2 - 13x + 42 = 0

Derek advises a patient to have a scale every 4 months and a polish every 6 months. If they have a scale and polish today, how long will they wait before they can have both during the same appointment?

Answers

Answer:

12 months time

Step-by-step explanation:

To find this, we simply find the lowest common multiple of the two months

Mathematically, we have the lowest common multiple of 4 and 6 as 12

Thus, the time they would have the appointment together is the simply 12 months

Answer:

12 months

Step-by-step explanation:

LCM= 2 I4,6

              2,3

           

LCM=12

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Find the percent error of the measurement.0.2 cm


A.
25%


B.
50%


C.
400%

Answers

Answer:

0.2

Step-by-step explanation:

herky is putting money into a savings account on a weekly basis to buy a dvd player that costs $179.40 including tax. he asks mario how much he should save per week to buy the player in 8 weeks if he already has $35.00 saved. mario gives him the answer and explains how he found the answer. what does mario say?

Answers

35 + 8w = 179.40
8w = 179.40 - 35
8w = 144.40
w = 144.40/8
w = 18.05 per week

Answer:a

Step-by-step explanation:
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