Hello!
Use PEMDAS (order of operations) to solve:
-4 · [3 + (-5)²] ÷ 7
Square -5:
-4 · [3 + 25] ÷ 7
Add the numbers inside of the parenthesis:
-4 · [28] ÷ 7
Multiply -4 and 28:
-112 ÷ 7
Divide:
= -16.
If a turtle walk 2 yards then 10 in then 3 ft how many inches did it walk in all
2 answers:
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Correct answer is : Area of triangle is
Solution:-
We can do it in 2 methods.
Method 1:-
Given that AB=6, BC=10 and m∠B = 120
Then area of triangle =
Let us assume AB is base and D is an altitude from C onto AB.
Then sin(60)=
CD = BC sin(60)
Hence height = =
Hence area of ΔABC = sq.units
Method2:-
Area of triangle =
Here a= BC=10, c=AB=6.
Hence area of triangle = sq.units
