No would I be your answer, I think it would be number 1! :) hope this helped have a good day!
Hello!
In math, there is always something called the discriminant. This is represented by the equation 
, when a quadratic = 
. The discriminant tells you what roots an equation has. A discriminant of over 0 represents 2 real roots, a discriminant of 0 = 1 real root, and a discriminant of <0 is 0 real roots (2 complex roots)
Now, substitute in the values and solve. In this equation, a = 5, b = 2, c = 1.
Therefore, the discriminant is -16. This means that the equation has no real roots, and has 2 complex roots. Therefore, your answer is D.
Hope this helps!
Cette question est incomplète.
Question complète
Exercer:
En face, [MH] est une hauteur du triangle MAT.
a.Calculer MH, puis HT.
b. Eva dit: "".
A-t-elle raison? Expliquer.
MA = 7,8cm
MT = 7,5cm
AH = 3cm
Answer:
La réponse d'Eva est incorrecte
Step-by-step explanation:
Nous résolvons les questions abive en utilisant le théorème de Pythagore
c² = a² + b²
a) Application de la formule ci-dessus:
Étape 1
Trouver MH
MA² = MH² + HA²
7,8² = MH² + 3²
MH² = 60,84-9
MH² = 51,84
MH = √51,84
MH = 7,2 cm
Étape 2
Résoudre pour HT
MT² = MH² + HT²
7,5² = 7,2² + HT²
HT² = 56,25 à 51,84
HT = √4,41
HT = 2,1 cm
b) La formule pour le périmètre du triangle MAT =
MA + MT + AH + HT
= 7,8 + 7,5 + 2,1 + 3 = 20,4 cm
Le périmètre du triangle MAT est de 20,4 cm
Donc, la réponse d'Eva est incorrecte
Answer:
SA=94
Step-by-step explanation:
SA= 2(4*5) + 2(4*3) + 2(5*3)
SA=2(20) + 2(12) + 2(15)
SA=40 + 24 + 30
SA=94
