4 years ago

Which graph represents the function f (x) = 5 - 5x^2

Mathematics

1 answer:

svetlana [45]4 years ago

6 0

The bottom one is correct

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Find the value of x.

lawyer [7]

Answer:

$\huge\boxed{x=\sqrt{70}}$

Step-by-step explanation:

ΔABC and ΔADB are similar (AAA).

Therefore the corresponging sides are in proportion:

$\dfrac{AB}{AD}=\dfrac{AC}{AB}$

Substitute:

$AB=x\\AC=7+3=10\\AD=7$

$\dfrac{x}{7}=\dfrac{10}{x}$ cross multiply

$(x)(x)=(7)(10)\\\\x^2=70\to x=\sqrt{70}$

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4 years ago

Given the function in the equation form , express its inverse in equation form. Equation: y = 3x + 2 Inverse: y =

Zanzabum

12.3 add 4 then subtract 10 = 0.9

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3 years ago

The average of your three quiz grades is 17 points. Two of your quiz grades are 14 and 19 points. Write and solve an equation to

Dennis_Churaev [7]

(14+19+x)/3=17
x= 18
the first is the equation and the second it the answer

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4 years ago

Find x PLEASE HELP ME !! 11 POINTS !

iris [78.8K]

Answer:

Step-by-step explanation:

Since this is a right triangle we can use trig functions

sin theta = opp /hyp

sin 30 = x / 10

10 sin 30 = x

10 * 1/2 = x

5 =x

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3 years ago

Heeelp . Can someone please answer this to meee ? .

lilavasa [31]

Answer:

If f(x)=g(x), the solution is x=-2

Step-by-step explanation:

We are given:

$f(x)=3x+3\\g(x)= (-1/2)x-4$

We need to find the solution if f(x)=g(x)

Now solving for f(x)=g(x)

$f(x)=g(x)\\3x+3=(-\frac{1}{2}x)-4\\3x+3=-\frac{1}{2}x-4\\3x+\frac{1}{2}x=-4-3\\\frac{3x*2+x}{2}=-7\\\frac{6x+x}{2}=-7\\\frac{7x}{2}=-7\\x=-7*\frac{2}{7}\\x=-2$

If f(x)=g(x), the solution is x=-2

7 0

3 years ago