All categories

3 years ago

Please help, it is a bonus problem so you don't have to show your work. But I would like to see it.

Mathematics

2 answers:

BartSMP [9]3 years ago

7 0

In a quadratic equation, the formula is: ax^2 + bx + c = 0

In the given formula 2x^2 + 4x -6 = 0:

a = 2, b = 4 and c = -6

Using the quadratic formula x1, x2 = -b+/-sqrt(b^2-4ac)/2a

Replace am b and c with their values and solve:

Now you have the 2 x values :

x1 = 1, x2 = -3

1^2 + -3^2 = 1 + 9 = 10

Answer: 10

solniwko [45]3 years ago

3 0

Answer:

Step-by-step explanation:

→ Factorise equation

( 2x + 6 ) ( x - 1 )

→ Solve

x = -3 and 1

→ Find the value

(-3)² + (1)² = 10

You might be interested in

Reason for 4 pleaseeee

Marina CMI [18]

The reason for statement 4 is CPCTC.

6 0

3 years ago

Please help me on all of these please and thank you I’m putting all my points for it please

love history [14]

1. 3
2. 4
3. 10
4. 15
5. 50
6. 40

I'm a beginner, and I haven't done this kind of math in a while, but I hope this helps. Have a great day!

- Blue

6 0

3 years ago

Read 2 more answers

Simplify -1.5 (-3.6 +2)

Tasya [4]

Answer:

2.4

Step-by-step explanation:

Add -3.6 and 2 inside the bracket. Then multiply the result by -1.5.

$-3.6 + 2 = -1.6\\-1.5(-1.6) = 2.4$

Note: Two negatives make a positive.

3 0

3 years ago

Read 2 more answers

Determine the percent of change? original: 50 new: 150.

Reptile [31]

Hi there! The percentage of change is 200%

We can find the percentage of change using the following formula:
$\frac{new-original}{original} \times 100$

When we fill in this formula, we get the following:
$\frac{150-50}{50} \times 100 = \frac{100}{50} \times 100 = 2 \times 100 = 200$

Therefore, the percentage of change is 200%

5 0

3 years ago

PLEASE HELP!!!!! 25 POINTS!!!!!!

Neporo4naja [7]

Answer:

The values of x and y that make the quadrilateral is a parallelogram are x = 12 and y = 21

Step-by-step explanation:

In the parallelogram, every two opposite sides are equal in lengths

In the given figure

If DEFG is a parallelogram, then DE = GF and DG = EF

∵ DE = GF

∵ DE = 6x - 12 and GF = 2x + 36

→ Equate them

∴ 6x - 12 = 2x + 36

→ Subtract 2x from both sides

∵ 6x - 2x - 12 = 2x - 2x + 36

∴ 4x - 12 = 36

→ Add 12 to both sides

∵ 4x - 12 + 12 = 36 + 12

∴ 4x = 48

→ Divide both sides by 4

∴ x = 12

∵ DG = EF

∵ DG = 6y - 42 and EF = 4y

→ Equate them

∴ 6y - 42 = 4y

→ Add 42 to both sides

∵ 6y - 42 + 42 = 4y + 42

∴ 6y = 4y + 42

→ Subtract 4y from both sides

∵ 6y - 4y = 4y - 4y + 42

∴ 2y = 42

→ Divide both sides by 2

∴ y = 21

∴ The values of x and y that make the quadrilateral is a parallelogram are

x = 12 and y = 21

5 0

3 years ago