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Oliga [24]
3 years ago
8

Determine the number of roots, using the most efficient method possible.

Mathematics
1 answer:
Dmitry [639]3 years ago
7 0

Answer:

2 roots in every case, not all are real.

Step-by-step explanation:

All of these equations are quadratic equations (degree 2). Every quadratic has two roots. They may be identical (looks like 1 root), and they may be complex (zero real roots), but there are always 2 of them.

a) the y-value of the vertex is negative and the parabola opens downward (leading coefficient -5), so there are no real zeros and both roots are complex.

b) each binomial factor contributes a root. Both roots are real.

c) the discriminant is positive, (3²-4·2·1=1), so both roots are real.

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Can you please help please please help me with this question is so hard and i will give you a Brainiest please
mrs_skeptik [129]

Question 1 :

x ≤ 4

Question 2:

i think its 40-5

7 0
3 years ago
For his craft project, James bought 1010 10 10 pieces of ribbon that were each 2.1 feet2.1\text{ feet} 2.1 feet 2, point, 1, sta
BlackZzzverrR [31]

Answer:

<h2>Total yards of ribbon bought is 6.993yards of ribbon</h2>

Step-by-step explanation:

Total pieces of ribbon James bought for his craft project = 10pieces. If each pieces of ribbon were 2.1feet long, the total number of feet for 10ribbons is expressed as;

= 10 * 2.1\\= 21feets

Converting 21 feets to yards;

1 feet = 0.333yard

21feets = x

x = 21feet * 0.333\\= 6.993yards

Total yards of ribbon bought is 6.993yards of ribbon

3 0
3 years ago
Plsss helppppppp:))))))
Alinara [238K]

Answer:

5

Step-by-step explanation:

because it is asking what minus 9 is equal to -4

5 0
3 years ago
Read 2 more answers
Why don't ants get sick ​
sveticcg [70]

Answer:

because they have little anty bodies.

Step-by-step explanation:

i don't know

7 0
3 years ago
I need help with this one please
skelet666 [1.2K]

Answer:

perimeter of figure = 24.28

Step-by-step explanation:

semicircle ' s perimeter = π r = 3.14 × 2 = 6.28 cm

perimeter of 3 sides of parallelogram = 7 +7+4= 18 cm.

perimeter of figure = 18 +6.28 = 24.28

approx value = 24.30 cm

3 0
2 years ago
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