Answer:
4
Step-by-step explanation: 2x+5=13
-5 -5
2x=8
/2 /2
x=4
Hello :
<span>(3x²+kx-1) is a quadratic polynome when : a =3 , b=k , c= -1
the discriminat </span>Δ = b²-4ac ≥ 0 because ac = -3 <span><<span> 0
-4ac </span></span>>0 and b²<span>≥0
the </span> quadratic polynome has :2 solutios or 1 solution (Change of sign)
conclusion : <span>is never always positive for any value of k</span>
Answer:
because you are big brain
Step-by-step explanation:
Answer:
I'm telling you once in my life, I committed mistake and I'M NOT POINT STEALER. put that in mind. You hurt me.
Let's solve for x.
2x+3y=5
Step 1: Add -3y to both sides.
2x+3y+−3y=5+−3y
2x=−3y+5
Step 2: Divide both sides by 2.
2x
2
=
−3y+5
2
x=
−3
2
y+
5
2
Answer:
x=
−3
2
y+
5
2
Answer:
The minimum score required for an interview is 77.252
Step-by-step explanation:
We solve this using z score formula
z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.
Top 15% of the candidates is a ranking that is equivalent to = 100 - 15% = 85th percentile.
The z score of 85th percentile = 1.036
Mean = 70
Standard Deviation = 7
Minimum score = raw score = ???
Hence:
1.036 = x - 70/7
Cross Multiply
1.036 × 7 = x - 70
7.252 = x - 70
x = 70 + 7.252
x = 77.252
The minimum score required for an interview is 77.252
