Answer:
it's the last one
Step-by-step explanation:
hope this helped <3
The correct answer is option c.) Kari has almost exactly enough left in her budget to see Genoa.
Explanation:
Given information is :
Kari has a budget of $585 set aside for sightseeing.
A tour to Genoa would cost her €60.85.
US dollars to euros at the time of Kari's visit is 1:0.6859, it means 1 dollar was 0.6859 euros.
As a trip to Genoa will cost her, €60.85, so in dollars it becomes:
0.6859 euros =$1
60.85 euros = ≈$88.72
Hence, out of her $585 budget, only $88.72 are used. So, she is left with enough money after visiting Genoa.
Answer:
Put the equation in standard form by bringing the 4x + 1 to the left side.
7x2 - 4x - 1 = 0
We use the discriminant to determine the nature of the roots of a quadratic equation. The discriminant is the expression underneath the radical in the quadratic formula: b2 - 4ac.
b2 - 4ac In this case, a = 7, b = -4, and c = -1
(-4)2 - 4(7)(-1)
16 + 28 = 44
Now here are the rules for determining the nature of the roots:
(1) If the discriminant = 0, then there is one real root (this omits the ± from the quadratic formula, leaving only one possible solution)
(2) If the discriminant > 0, then there are two real roots (this keeps the ±, giving you two solutions)
(3) If the discriminant < 0, then there are two imaginary roots (this means there is a negative under the radical, making the solutions imaginary)
44 > 0, so there are two real roots
Answer:
c
Step-by-step explanation:
in upper triangle:
Tan60=p/b
√3=a/6
∴a=6√3
again, sin60=p/h
√3 /2=6√3 /b
∴b=12
now, taking down triangle:
cos45=h/b
1/√2 =12/c
∴c=6√2