If it is the question I just completed it should be A. 76.4
If u use the app photomath it will give u answer with the steps too
I believe that the answer to your question is 5 + 3 i?
A) On the first place we can put 9 digits, on the second 9, on the third place 8 and on the last place 7 ( because no digits can be repeated ):
9 · 9 · 8 · 7 =4536 numbers
b) There are 5 odd digits can be repeated. So:
5 · 10 · 10 · 5 = 2500 numbers
c) On the first place we can put:5,6,7,8,9 (5 digits) On the last place is just one (0), because the number must be divisible by 10:
5 · 10 · 10 · 1 = 500 numbers
d) on the first place we can put 2 digits ( 1, or 2 - there are no 4-digit numbers starting with 0). The last digit must be even, but the order can be:
X - odd - odd - even 2 · 5 · 4 · 5 = 200
X - odd - even - even 2 · 5 · 5 · 4 = 200
X - even - odd - even 2 · 5 · 5 · 4 = 200
X - even - even - even 2 · 5 · 4 · 3 = 120
Finally: 200+ 200 + 200 + 120 = 720 numbers
Answer:
58,900cm²
Step-by-step explanation:
Area of the triangle = 1/2absin thets
Area of the triangle = 1/2* i * j sin 30
Area of the triangle = 1/2 * 380 * 620 sin 30
Area of the triangle = 380 * 310 * 0.5
Area of the triangle = 380*155
Area of the triangle = 58,900cm²
hence the area of the triangle is 58,900cm²
