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Natasha2012 [34]
2 years ago
9

Find the number of solutions of the equation 6x^2+6x+3=0 by using the discriminant

Mathematics
1 answer:
Neporo4naja [7]2 years ago
4 0

Answer:

No real roots

Step-by-step explanation:

Given

6x^2 + 6x + 3 = 0

Required

The number of solution

The discriminant (d) for ax^2 + bx + c = 0 is:

d = b^2 - 4ac

So, we have:

d = 6^2 - 4*6*3

d = 36 - 72

d = -36

<em>Since </em>d<em>, then the equation has no real roots</em>

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Caleb earned $49 for working 7 hours. How much would he earn for working 14 hours at the same rate
ella [17]

Answer:

The answer is 686 but I coukd be wrong.

5 0
3 years ago
Read 2 more answers
Which number is between 7.17 x 10^4 and 8.17 10^5 A. 6.92 x 10^4 B. 7.2 x10^9 C. 7.57 x 10^3 D. 8.053 x 10^4
Serga [27]

Answer:

D. 8.053 x 10^4

Step-by-step explanation:

Given :

7.17 x 10^4 and 8.17 10^5

The number in between the two Given numbers should be greater Than 7.17*10^4 but less than 8.17*10^5

A. 6.92 x 10^4 - this is less than 7.17 * 10^4 ; hence doesn't fit in

B. 7.2 x10^9 - this is greater than both values, hence, doesn't fit in

C. 7.57 x 10^3 - this is less than 7.17*10^4 ; hence does not fit in

D. 8.053 x 10^4 - this fits in as it is greater than 7.17*10^4 and less than 8.17*10^5 ; hence, it is the correct answer.

6 0
3 years ago
The ratio of the sides of a triangle is 3:4:5 and its perimeter is 48 inches. Find the length of the shortest side.
exis [7]

Answer:

12 inches

Step-by-step explanation:

3+4+5=12

48/12=4

3*4=12

4 0
3 years ago
A car's velocity changes at a rate of 36 miles per hour in 0.5 hour.
kotegsom [21]

Answer:

72

Step-by-step explanation:

In order to find the acceleration we need first to defined it, so:

acceleration=((final velocity)-(initial velocity))/time interval

a=(vf-vi)/dt

But (vf-vi) actually represents the velocity change, so (vf-vi)/dt represents the velocity change rate. This means that in our case:

a=(36miles/hour)/(0.5hours)

a=72miles/hour^2

In conclusion the acceleration is a=72miles/hour^2, without units just 72.

7 0
3 years ago
Given that angle a = 54° and angle b = 48°, work out x.
Arisa [49]
If it’s a triangle then it has to equal 180
so 48+54+x=180
48+54=102
180-102=x

x=78
3 0
2 years ago
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