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Marrrta [24]
3 years ago
5

Does anyone know this?

Mathematics
2 answers:
seropon [69]3 years ago
3 0

Answer:

-124

Step-by-step explanation:

The equation for a discriminant is:

b^{2} -4ac

So for

7x^{2} -4x +5=0

a = 7         b = - 4          c = 5

Plug values into the equation.

(-4)^{2} -4(7)(5)

16 - 140 = -124

IRISSAK [1]3 years ago
3 0

Answer:-124

Step-by-step explanation:

b^2 - 4ac

a = 7  b = -4   c = 5

-4^2 - 4*7*5

16 - 4*35

16 - 140

-124

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How many people like 2 kinds of dancing but not all 3 kinds of dancing?
marshall27 [118]

Answer:

38 people

Step-by-step explanation:

add 11, 18, and 9 together

5 0
2 years ago
Someone please help I really appreciate it
Alex_Xolod [135]
So you have to find the relationship between the pumpkin diameter (y) and the number of weeks passed (x) in a table, lets do it taking into account that the equation modeling such behaviour is:
y = 2x + 6, where x is the number of weeks and plus original 6 cm
x                                y                            
week                         diameter
0                                6
1                                8
3                                12
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10                               26
substitute the x and y values in the equation to see how they fit into it
5 0
2 years ago
Read 2 more answers
First 100 terms of the following sequence 3 ,7 ,11
Sveta_85 [38]
Given that a_1 = 3, d = 4

<u>Find the nth term:
</u>
a_n = 3 + 4(n - 1)

a_n = 3 + 4n - 4

a_n =  4n - 1

<u>Find the 100th term:</u>

a_{100} = 4(100) - 1 = 399

<u>Find the Sum:</u>

\text{Sum} = 100(\dfrac{a_1 + a_{100}}{2} )= 100 (\dfrac{3 + 399}{2}) = 20100

7 0
3 years ago
Read 2 more answers
How do i find the shorted distance between the point and the line
m_a_m_a [10]

Answer:

5 units

Step-by-step explanation:

3x + 4y = 8

4y = -3x+8

y = -3/4+2

The shortest distance between a point and a line is the perpendicular line.

Slope of the perpendicular line: 4/3 and point (-3,-2)

b = -2-(4/3)(-3) = 2

Equation of the perpendicular line: y=4/3x+2

y is equal y

4/3x+2= -3/4x+2

4/3x +3/4x = 2-2

x = 0

Plug x=0 into one of the equations to find y

y = 4/3(0) + 2

y = 2

(0,2) and (-3,-2)

Distance = sqrt [(-3-0)^2 + (-2-2)^2]

Sqrt (-3)^2+ (-4)^2

Sqrt 25 = 5

3 0
2 years ago
Which represents the solution(s) of the graphed system of equations, y = x2 + x – 2 and y = 2x – 2
Debora [2.8K]

Answer:

x=1 and x=0

Step-by-step explanation:

We need to find the points at which the graphs y = x^2 + x – 2 and y = 2x – 2 intercept.

We know that:

x^2 + x – 2 =  2x – 2

x^2 - x = 0

Factorizing:

x(x-1) = 0

Therefore, the solution to the system of equation is x=1 and x=0.

6 0
3 years ago
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