Quadratic formula 2x²+9x-4=0

Answers

Answer 1

Answer: $2x^2+9x-4=0 \n \na=2 , b =9 , \ c=- 4 \n \n\Delta = b^(2)-4ac = 9^(2)-4*2* (- 4)= 81+32 =113 \n \nx_(1)=(-b-√(\Delta ))/(2a) =(-9- √(113))/(4) \n\nx_(2)=(-b+√(\Delta ))/(2a) = (-9+√(113))/(4)$

Answer 2

Answer: $2x^2+9x-4=0\ \ \ \ /:2\n\nx^2+(9)/(2)x-2=0\n\nx^2+2x\cdot(9)/(4)+((9)/(4))^2-((9)/(4))^2=2\n\n(x+(9)/(4))^2-(81)/(16)=2\n\n(x+(9)/(4))^2=(32)/(16)+(81)/(16)\n\n(x+(9)/(4))^2=(113)/(16)\iff x+(9)/(4)=-\sqrt(113)/(16)\ \vee\ x+(9)/(4)=\sqrt(113)/(16)\n\nx=-(9)/(4)-(√(113))/(4)\ \vee\ x=-(9)/(4)+(√(113))/(4)\n\nx=-(9+√(113))/(4)\ \vee\ x=-(9-√(113))/(4)$

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Using the numbers 2,3,5,8 to make an equation to equal 104

Answers

The resulting equation is $8[(5*3)-2]=104$

Equation :

We have to make an equation by using numbers 2,3,5,8 and equal to 104

Now set the given number in such order so that we can get 104.

$5*3*8-2*8=104\n\n8[(5*3)-2]=104$

The resulting equation is $8[(5*3)-2]=104$

Learn more about the equation of function here:

brainly.com/question/25841119

One correct answer is:

8(2×5 + 3) = 104.

Explanation:

We start with 104 and work backward.

104 is divisible by 8:
104/8 = 13.

This means we need to make 13 out of 2, 3 and 5.

13 = 10+3.

This leaves us 10 to make out of 2 and 5; 2*5 = 10, so we have:

8((2*5)+3) = 104.

The quotient of two numbers is 20. Their sum is 84. What are the two numbers?

Answers

The two numbers are 80 and 4.
The quotient of 80 and 4 is 20: 80 ÷ 4 = 20
The sum of 80 and 4 is 84: 80 + 4 = 84

I went to the tire store in my total was $730.98 and I am scheduled to pay $27.96 a week how many weeks total will I be paying for the tires

Answers

We know that you bought tires for $730.98
You have to pay $27.96 a week to pay off what you bought.

Divide $730.98 by $27.96

You will pay off the $730.98 in 26 weeks.

What should be done to both sides of the equation in order to solve p - 17 = -23?

Answers

Answer:

the number 17 should be added to it

Step-by-step explanation:

brainliest pls =}

Solve with one variable for both sides.

4 brothers share 3 pizzas equally.
How much of a pizza does each brother get ?

Answers

4 brothers /3 pizzas = 3/4 each

4 x 3/4 = 12/4
12/4 = 3 pizzas

3/4. No matter how many pizzas there are, if we divided each pizza to 4 slices, each one gets one slice from each pizza, that is 1/4 of a pizza for each brother. Since there are 3 slices of pizza, simply multiply 3*1/4=3/4.
Hope this helped and if you need more help then just message me instead ok :)

How can I remember slope?

Answers

You can remember slope by saying " rise over run"

just remember a hill going down.

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Factor the expression completely.4x2 - 12x + 9