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Setler79 [48]
3 years ago
9

HELP ME PLEASEEEEEEEe

Mathematics
1 answer:
Daniel [21]3 years ago
8 0

Answer:

picture

Step-by-step explanation:

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A quadratic equation has exactly one real number solution. Which is the value of its discriminant?
zhenek [66]
<h3>Answer:  0</h3>

The discriminant is the number under the square root of the quadratic formula

x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}

The discriminant formula is D = b^2-4ac

If D = 0, then the whole square root portion is 0 meaning we end up with the solution x = -\frac{b}{2a}

4 0
3 years ago
Simplify the following expression.
erica [24]

Answer:

B)  53x + 74

Step-by-step explanation:

(59x + 64) - (6x - 10) = 59x + 64 - 6x + 10

                                = 53x + 74

3 0
3 years ago
Ivanna purchased a prepaid phone card for $30. Long distance calls cost 16 cents a minute using this card. Ivanna used her card
Wewaii [24]

Answer:

11 Minutes

Step-by-step explanation:

$30 - $28.24 = $1.76

$1.76/ 0.16 Cents /minute =  11 Minutes

7 0
3 years ago
How do you calculate the area and the perimeter of a parallelogram and a triangle?
Mnenie [13.5K]

for parallelograms:

area = b(h)

so basically, the length times the height. just like how you would find the area of a square.

perimeter: just add all of the sides together.

for triangles:

area = 1/2(b) x h

so half the length multiplied by the height. for example, if the length was 4, you have to use half of that. so that means 2 times whatever the height is.

perimeter: again, just add all three sides together

7 0
3 years ago
Read 2 more answers
Solve the system using the substitution method<br> 6x - 2y = -4<br> y= 3x + 2
Anit [1.1K]

Answer:

Step-by-step explanation:

6x - 2y = -4

y= 3x + 2

We see that y = 3x + 2 so we can use that value of Y everytime we see i in the other equation.

6x - 2(3x +2) = -4

Now usually we'd we simply solve for X.

6x - 6x -4 = -4

This clearly does not work as we cannot get rid of X

Therefore, this system of equations has no solution we can find through substitution

3 0
3 years ago
Read 2 more answers
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