MATHEMATICS HIGH SCHOOL

What is the discriminant of the quadratic equation 2x + 5x2 = 1?–18
–16
22
24

Answers

Answer 1
Answer:

Applying it's formula, the discriminant of the quadratic equation 2x + 5x² is given of 24.

What is the discriminant of a quadratic equation?

A quadratic equation is modeled by:

y = ax^2 + bx + c

The discriminant is:

\Delta = b^2 - 4ac

In this problem, the equation is:

2x + 5x² = 1.

In standard form:

5x² + 2x - 1 = 0.

Hence the coefficients are a = 5, b = 2, c = -1, and the discriminant is given by:

\Delta = b^2 - 4ac = (2)^2 - 4(5)(1) = 4 + 20 = 24.

More can be learned about discriminant at brainly.com/question/19776811

#SPJ2
Answer 2
Answer: Hello,

Answer D

Δ=2²-4*5*(-1)=4+20=24

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Which value, when placed in the box, would result in a system of equations with infinitely many solutions?y = 2x – 5

2y – 4x =

a. –10
b. –5
c. 5
d. 10

Answers

For a system of equations to have infinitely many solutions, the equations have to be lineary dependent, (i.e. one of the equations is a multiple of the other equation). For the given equation to have infinitely many solutions, the second equation have to be a multiple of the first equation. The first equation can be rewritten as y - 2x = -5 The second equation is the first equation multiplied by 2, i.e. 2(y - 2x= -5) = 2y - 4x = -10 Therefore, the correct answer is -10 (option a).

Answer:

-10

Step-by-step explanation:

Find the value of each variable and show which property is used.

Answers

7y-2=5y+4
+2 +2
__________
7y= 5y + 6
-5y -5y
__________
2y= 6

Y=3

3x+2=23
3x =21
x= 7

7(3) -2= 5(3)+4
19=19
x=19

3(7)+2=23
23= 23
Y=23

Adding and subtracting property


Jose wants to purchase a bike that normally sells for $150. If the bike is on sale for 30% off, how much will he pay before tax?

Answers

$150 x .30= $45
$150-$45= $105
before tax it will be $105

Whats the pattern in the numbers 4 16 36 64 100

Answers

...Every even # squared. 2^2=4, 4^2=16, 6^2=36, 8^2=64, 10^2=100.....

Pattern continued...4,16,36,64,100,144,196,256,324,400

A quality control company was hired to study the length and made a sticks produced by certain company the team carefully measured the length of mini mini mini sticks and a distribution seems to be slightly skewed to the right with a mean of 99.83 cm and a standard deviation of 0.1 cm what is the probability of finding a meet a stick but they let them more than 99.94 cm

Answers

The quality is the answer

When x=3 and y=5 by how much does the value of 3x^2-2y exceed the value of 2x^2-3/

Answers

x = 3

y = 5

3x^2 – 2y

= 3(3)^2 - 2(5)

=> 3(9) - 10 = 17

And 2x^2– 3y

=> 2(3)^2 - 3(5)

=> 2(9) - 15 = 3

17 - 3 = 14

This gives 3x^2 – 2y exceeding 2x^2– 3y by 17 - 3 = 14
14 is the correct answer.

When you use x = 3 and

 y = 5 in the given expressions, 3x2 – 2y = 3(3)2– 2(5) = 27 – 10 = 17 and

2x2 – 3y = 2(3)2 – 3(5) = 18 – 15 = 3.

Then subtract 3 from 17....17-3 = 14.

14 is your answer.

Hope I helped ;]
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