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2 years ago

6

which of the following is not a condition that must be met before you can use the quadratic formula to find the solution of an e

quation

1 answer:

Anit [1.1K]2 years ago

6 0

B : the coefficient of x^2 must be positive

The coefficient of x^2 (a) can be negative as well

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Find the values of the variables in each right triangle.

Masteriza [31]

Answer:

x = 12

y = 16

Step-by-step explanation:

Use the Pythagoras Theorem on the left triangle.

$(Hypotenuse)2=(Base)^2+(Perpendicular)^2\\(x)^2=(7.2)^2+(9.6)^2\\x^2=51.84+92.16\\x^2=144\\x=\sqrt{144}\\x=12\\$

Now use the Pythagoras Theorem on the right triangle.

$(Hypotenuse)2=(Base)^2+(Perpendicular)^2\\(y)^2=(12.8)^2+(9.6)^2\\y^2=163.84+92.16\\y^2=256\\y=\sqrt{256}\\y=16\\$

4 0

2 years ago

Amalia is scuba diving at a position 24.25 feet below sea level.she descends 0.5 foot each minute for 25 minutes what is Amalias

vlada-n [284]

We can represent her initial position as -24.25, since it says she is 24.25 feet below sea level.
If she descends -.5 feet per minute, all we have to do is multiply -.5 by 25, and add it to her initial position to get the answer.
-.5*25=-12.5
-24.25+-12.5=-36.5
Her current position is -36.5
Hope this helps!

6 0

2 years ago

78% of U.S. adults think that political correctness is a problem in America today. You randomly select six U.S. adults and ask

cupoosta [38]

Answer:

mean= 4.68

variance= 1.0296

Step-by-step explanation:

mean= n×p

n=6

p=0.78

mean= 6×(0.78)

= 4.68

variance= n×p×(1-p)

= 6 × 0.78×(1-0.78)

= 1.0296

6 0

3 years ago

Read 2 more answers

Graph x^3 - 3x^2 + 2 = 0.1 - x What are the solutions of the equation?

liq [111]

Answer:

$x=-0.6,x=1.52,x=2.08$

Step-by-step explanation:

Let $f(x)=x^3-3x^2+2$ .

and

$g(x)=0.1-x$

The graph of the two equations are shown in the attachment.

The points where the two graphs intersected are: $(-0.6,0.7),(1.52,-1.42),(2.08,-1.98)$

The x-coordinates of the intersection points are the solutions to $x^3-3x^2+2=0.1-x$ .

Therefore the solutions are: $x=-0.6,x=1.52,x=2.08$

6 0

2 years ago

Water erupting from geyser can reach a temperature of 244 F . The average temperature in Yellowstone National Park is 35F . Use

stiv31 [10]

Difference means subtraction , 244 - 35 = 209
I forgot how to do this problem it was 63 years ago

4 0

3 years ago