54=0.75a
0.75 is the decimal form of 75% (75/100) and a is the missing number.
<span>54 = 0.75a
</span>--- ------
0.75 0.75
72 = a
54 is 75% of 72.
Answer:step 3
Step-by-step explanation:
she should have multiplied 15 x 3=45
k=45
Answer:
100
Step-by-step explanation:
Answer:
Ariel answer is wrong.
Step-by-step explanation:
Given that Ariel had done a Math problem for a triangle with sides
9,15 and 12. She concluded that these sides are not that of a right triangle.
To check whether Ariel is right:
Greater side = 15
Hence greatest angle will be opposite 15
Let us check pythagorean theorem
smaller sides are 9 and 12
Square and add them
9 square +12 square = 81+144 = 225 =15 square
We find that Pythagorus theorem is satisfied
Hence it is concluded that the triangle is right angled and Ariel was wrong
45 x 5 = 225 minutes per week
225 x 36 = 8,100 minutes per school year