All categories

2 years ago

Bonus solve the equation aݔ ଶ + 7x – 4 = 0 for x by using the quadratic formula.

Mathematics

1 answer:

victus00 [196]2 years ago

3 0

   x² +   7x   - 4 = 0
a = 1, b = 7, c = -4

x = [-b +/- √(b² - 4ac)]/2a
   = [-7 +/- √(49 + 4)]/2
   = (-7 +/- √53)/2

You might be interested in

F(x) = 2x^2<br> Find f(-6)

katrin2010 [14]

Answer:

f(-6) = 72

Step-by-step explanation:

Input -6 for x :

2(-6)²

Complete with P.E.M.D.A.S :

2(36)

then :

so therefore :

f(-6) = 72

f of x equals 72

7 0

2 years ago

Write an equivalent expression? Explain your reasoning. (t+t+t) +7t-6/(t+t+t)+2t-3

kiruha [24]

Answer:

Step-by-step explanation:

Combine any like terms on each side of the equation: x-terms with x-terms and constants with constants. Arrange the terms in the same order, usually x-term before constants. If all of the terms in the two expressions are identical, then the two expressions are equivalent.

5 0

2 years ago

Read 2 more answers

I really need someone to help me out

elixir [45]

All it takes for a relation to be a function is for each possible first number of a pair there's only one possible second number.

So if any of the sets has two pairs with the same first number, that one's not a function.

The last one has (3,2) and (3,5) so isn't a function.

3 0

2 years ago

Please help!! 10-|-5-2|

Lena [83]

Answer:

Step-by-step explanation:

10-|-5-2|

10-|-7|

10-(7)

10-7

5 0

2 years ago

Delilah finds her answer is 90, but she copied the expression incorrectly from the board. If her reasoning and answer for the ex

USPshnik [31]

Question:

Three students were working on 630,000÷700 in math class.

a. Desiree finds the quotient is 9,000 and Micah finds the quotient is 900.

Determine which student found the correct quotient.

b. Delilah finds her answer is 90, but she copied the expression incorrectly from the board. If her reasoning and answer for the expression she copied are correct, what expression might she have written?

Answer:

a. Micah is correct

$Expression = 63000 \div 700$