Answer:
its a right angle!
Step-by-step explanation:
7. 8+7=15 and 15/2=7.5 BUT they are asking for FULL LESSONS so it cannot be a decimal. Therefore it is 7.
Answer:
ΔABC is not a right- angled triangle
Step-by-step explanation:
Given AB = 8, BC = 5
Then AC = 22 - (8 + 5) = 22 - 13 = 9 cm
Using the converse of Pythagoras' identity
If the square of the longest side equals the sum of the squares of the other 2 sides then triangle is right.
AC² = 9² = 81
AB² + BC² = 8² + 5² = 64 + 25 = 89
81 ≠ 89, hence ΔABC is not right- angled
Answer:
$3
Step-by-step explanation:
Martin get's $8 EVERY WEEK
So, in 5 weeks, he will get:
8 * 5 = $40
He saves up all the 5 weeks, so he has all the money.
After 5 weeks, he has:
$40
Now, he decides to buy a helmet for $37. So the amount remaining is:
40 - 37 = $3
So, Martin has $3 currently
