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3 years ago

Find the value of x.

Mathematics

1 answer:

slavikrds [6]3 years ago

3 0

Answer:

$x=11$

Step-by-step explanation:

we know that

The <u><em>Midpoint Theorem</em></u> states that the segment joining two sides of a triangle at the midpoints of those sides is parallel to the third side and is half the length of the third side.

In this problem

$(x+5)=\frac{1}{2}(3x-1)$

solve for x

Multiply by 2 both sides

$2x+10=3x-1$

subtract 2x both sides

$10=3x-1-2x$

$10=x-1$

Adds 1 both sides

$x=11$

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Which values written below are the same as 87%? *

777dan777 [17]

Answer: 87/100 and 0.87

Step-by-step explanation:

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so 87% is 87/100

or 0.87

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3 years ago

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John drives for 5 hours at 30 miles per hour. How far does he travel?

jekas [21]

Answer:

150

Step-by-step explanation:

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3 years ago

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Easy - Math - INVERSES - NEED ASAP PLEASE AND THANK YOU VERY MUCH!

polet [3.4K]

Answer:

Part 1) No

Part 2) Option 4. $f^{-1}(x)=-\frac{1}{3}x+3$

part 3) $f^{-1}(9)=4$

Step-by-step explanation:

Part 1) we have

$f(x)=8x-3$

$g(x)=(x+8)/3$

Find the inverse of f(x) and then compare with g(x)

Let

y=f(x)

$y=8x-3$

Exchange the variables x for y and y for x

$x=8y-3$

Isolate the variable y

$8y=(x+3)$

$y=(x+3)/8$

Let

$f^{-1}(x)=y$

$f^{-1}(x)=(x+3)/8$

therefore

the functions f(x) and g(x) are not inverses of each other

Part 2) we have

$f(x)=-3x+9$

Let

y=f(x)

$y=-3x+9$

Exchange the variables x for y and y for x

$x=-3y+9$

Isolate the variable y

$3y=-x+9$

$y=(-x+9)/3$

Let

$f^{-1}(x)=y$

$f^{-1}(x)=(-x+9)/3$

$f^{-1}(x)=-\frac{1}{3}x+3$

Part 3) we know that

For $x=4$ , $f(x)=9$

For $x=9$ , $f^{-1}(9)=4$

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4 years ago

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3 years ago

Twenty two dollars an hours plus 2.25%

amid [387]

Answer:

how long are you working? what are you asking for?

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Step-by-step explanation:

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