Answer:
Substitute the value of 7 into the variable x. Then solve the equation.
f(7) = 10 - 2(7)
f(7) = 10 - 14
<h2><em><u>
f(7) = -4 is the answer.</u></em></h2>
Answer:
2x^2+5x-1=0
ax^-bx+c=0
b^2-4ac = 5^2-4(2)(-1) =33
Answer:
20/81.
Step-by-step explanation:
There are 5 odd numbers in 1 to 9 and 4 even ones.
Prob(Odd number on first spin) = 5/9
Prob(Not flipping heads on second) = 1/2
Prob(Not spinning a 6 on third ) = 8/9
The compound probability is found by multiplying the above ( because each trial is independent of the others):
Answer = 5/9 * 1/2 * 8/9
= 40/162
= 20/81.
Answer:
No
Step-by-step explanation:
Using the converse of Pythagoras' identity
If the longest side squared is equal to the sum of the squares of the other 2 sides then the triangle is right.
31² = 961
16² + 30² = 256 + 900 = 1156
Since 961 ≠ 1156 then the sides do not form a right triangle.
