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lozanna [386]
2 years ago
13

Solve using the quadratic formula. 5v2 − 7v − 7 = 0

Mathematics
1 answer:
dimulka [17.4K]2 years ago
8 0

Answer:

Move everything so all terms are on one side of the = sign, and solve for zero using the Quadratic Formula. There are two answers: v=7±√69

                                                                                                10

Step-by-step explanation:

Subtract 1 from both sides so you have  

e "standard form" of a quadratic is  

, so first we have to identify a, b, and c in your equation: a=5, b= -7, and c= -1.

The quadratic formula is  

. Plugging in your values, we get  

−

. It looks a little funny, but you can't simplify it any more. You can check the answer by graphing the function on your calculator and asking for the function value at these points.

After graphing, hit 2nd, "Calc", "Value" on your TI, and type in either  

, and you'll get that  

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PtichkaEL [24]

Answer:

All of them are equal to 2.427

Step-by-step explanation:

A = 2.427

B = 2.427

C = 2.427

D = 2.427

8 0
2 years ago
A box contains 17 balls numbered 1 through 17. Two balls are drawn in succession without replacement. If the second ball has the
Brilliant_brown [7]

Answer:

1 ; 7 /17

Step-by-step explanation:

17 balls numbered 1 through 17

Picking without replacement :

If the second ball picked = 4

P(first ball has a smaller number)

Numbers less Than = (3, 2, 1)

P(number less than second ball Given 4 is drawn for second ball) :

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= (3 / 272) / (3 /272) * 0

= 3 / 272 * 272 / 3

= 1

2.)

(8/17 * 7/8) ÷ (8/17 * 7/8) + (9/17 * 1/17)

7/17 ÷ (7 /17) + 10/17

7 /17 ÷ 17/17

7/17 ÷ 1

7 /17

7 0
3 years ago
Inequalities &amp; problem solving<br>|3-2x/3|&gt;5
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3 years ago
Use the functions f(x) = 4x − 5 and g(x) = 3x + 9 to complete the function operations listed below.
alukav5142 [94]
A) (f+g)(x)=f(x)+g(x)=(4x-5)+(3x+9)=7x+4
B) (f*g)(x)=f(x)*g(x)=(4x-5)(3x+9)=12x^2+21x-45
C) f(g(x)) = 4(3x+9)-5 = 12x+31
3 0
2 years ago
I need help !!!!!!!!!!
Alex Ar [27]

Answer:

<em>1. a</em>

<em>2. c</em>

<em>3. e</em>

<em>4. b</em>

<em>5. d</em>

<em>6. g</em>

<em>7. f</em>

3 0
2 years ago
Read 2 more answers
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