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3 years ago

(3x - 1)^2 + 12x - 4 = 0

Mathematics

2 answers:

Olenka [21]3 years ago

5 0

Answer:

= 1/3, x=-1

Step-by-step explanation:please mark brainliest 0.0

mash [69]3 years ago

3 0

In the third step 3 is bothe the sides are divided by 3

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I’ll mark brainliest if correct lol

True [87]

Answer:

10 seconds

Step-by-step explanation:

mark two points on the line the use the slope rule to calculate it you'll find it's -5 m/s

8 0

3 years ago

Read 2 more answers

Tim installs 50 square feet of his floor in 45 minutes. At this rate how long does it take him to install 495 square feet.

Nina [5.8K]

50 sqft = 45 min
495 sqft = x min

495/50 is 9.9. So we know we multiplied 50 by 9.9 to change it to 495.
Do the same on the other side. 45 x 9.9 = 445.5.

It will take him 445.5 minutes, or 7.425 hours

7 0

3 years ago

I need help with please

gregori [183]

Answer:

Step-by-step explanation:

4 0

2 years ago

Express the following function, as a composition of two functions f and g. h(x)= x^2/(x^+4)

soldi70 [24.7K]

According to defintion of compostion of functions, we can get:

$(f\circ g)(x)=f(g(x))$

But we know, that:

$\displaystyle h(x)= \frac{x^2}{x^2+4}$

Our goal, is to express that function as a composition:

$(f\circ g)(x)=h(x) \Rightarrow f(g(x))=h(x)$

I.e:

$\displaystyle f(g(x))=\frac{x^2}{x^2+4}$

If $\displaystyle f(y)= \frac{y}{y+4}$ then $g(x)=x^2$ . Hence, $\displaystyle h(x)=(f\circ g)(x)=f(g(x))= \frac{g(x)}{g(x)+4} \Rightarrow f(g(x))=f(x^2)= \frac{x^2}{x^2+4}$

4 0

3 years ago

Find the number of real number solutions for the equation. x2 + 9x + 20 = 0

fiasKO [112]

$x^2 + 9x + 20 = 0 \\ x^2+4x+5x+20=0\\ x(x+4)+5(x+4)=0\\ (x+5)(x+4)=0\\ x=-5 \vee x=-4$

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3 years ago