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2 years ago

15

Select all expressions that represent the area of the given triangle.

1 answer:

koban [17]2 years ago

4 0

Answer:

The first one, fourth one, and fifth one

Step-by-step explanation:

Area for triangle is A=½bh and those are the only equations that include A=½(_×_).

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{12,16,5,2} the number of subsets

-Dominant- [34]

Answer:

I believe the answer would be 16 (subsets of a finite set)

7 0

2 years ago

Help answer all please wrong answers will get reported

Maurinko [17]

If $f^{-1}(x)$ is the inverse of $f(x)$ , then by definition of inverse functions,

$\left(f\circ f^{-1}\right)(x) = f\left(f^{-1}(x)\right) = x$

Given $f(x) = 2x-8$ , the inverse, if its exists, satisfies the equation above. Evaluate $f$ at the inverse, we have

$f\left(f^{-1}(x)\right) = 2 f^{-1}(x) - 8 = x$

Solve for the inverse:

$2 f^{-1}(x) - 8 = x$

$2 f^{-1}(x) = x + 8$

$\boxed{f^{-1}(x) = \dfrac12 x + 4}$

Given $g(x) = \frac13 x + 5$ , we do the same thing as before to find its inverse.

$g\left(g^{-1}(x)\right) = \dfrac13 g^{-1}(x) + 5 = x \implies \boxed{g^{-1}(x) = 3x - 15}$

5 0

1 year ago

What is the value of X

alexdok [17]

Answer:

$x=12$

Step-by-step explanation:

We have been given a graph of similar triangles. We are asked to find the value of x.

Since we know that corresponding sides of similar triangles are always in same proportion, so we will use proportions to find the length of x.

$\frac{3}{x+3}=\frac{4}{16+4}$

$\frac{3}{x+3}=\frac{4}{20}$

Upon cross multiplying our equation we will get,

$4*(x+3)=3(20)$

Upon distributing 4 we will get,

$4x+12=60$

Let us subtract 12 from both sides of our equation.

$4x+12-12=60-12$

$4x=48$

Upon dividing both sides of our equation by 4 we will get,

$\frac{4x}{4}=\frac{48}{4}$

$x=12$

Therefore, the value of x will be 12.

4 0

2 years ago

Read 2 more answers

LUCKY_DIMON [66]

Answer:

h = 0.64 ft

Step-by-step explanation:

$s = \frac{14 + 12 + 6}{2} = \frac{32}{2} = 16 \: ft \\ \\ A = \sqrt{(s - 14)(s - 12)(s - 6)} \\ \\ A = \sqrt{(16 - 14)(16 - 12)(16 - 6)} \\ \\ A = \sqrt{(2)(4)(10)} \\ \\ A = \sqrt{80} \\ \\ A = 8.94427191\\ \\ A \approx 8.94 \: {ft}^{2}$

A = 14h

8.94427191 = 14h

h = 8.94/14

h = 0.638571429

h = 0.64 ft

7 0

2 years ago

A driver descends from an elevation of 6 feet below sea level to an elevation of 98 feet below see level in 4 equal intervals. W

mafiozo [28]

Hi can you help me plz thanks

5 0

2 years ago