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4 years ago

HELP ASAP PlEASE

Mathematics

1 answer:

Daniel [21]4 years ago

7 0

So if 1cm=30m. Then set it up as a ratio. Then see what would make the first ratio equal the other and find x.

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What is the area of this square?

Alex73 [517]

16 bc all sides of a square are congruent and area = LxW so 4x4=16

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3 years ago

Which two functions are inverses of each other?

liraira [26]

Answer:

Option 3 - f(x)= 4x, $g(x) = \frac{1}{4}x$

Step-by-step explanation:

To find : Which two functions are inverses of each other?

Solution :

Two functions are inverse if $f(g(x))=x=g(f(x))$

Now, we find one by one

1) f(x)= x, g(x) = -x

$f(g(x))=f(-x)=-x\neq x$

Not true.

2) f(x)= 2x, $g(x) = -\frac{1}{2}x$

$f(g(x))=f(-\frac{1}{2}x)=2\times(-\frac{1}{2}x)=-x\neq x$

Not true.

3) f(x)= 4x, $g(x) = \frac{1}{4}x$

$f(g(x))=f(\frac{1}{4}x)=4\times(\frac{1}{4}x)=x$

$g(f(x))=f(4x)=\frac{1}{4}\times 4x=x$

i.e. $f(g(x))=x=g(f(x))$ is true.

So, These two functions are inverse of each other.

4) f(x)= -8x, $g(x) =8x$

$f(g(x))=f(8x)=8\times(-8x)=-64x\neq x$

Not true.

Therefore, Option 3 is correct.

6 0

3 years ago

Use elimination to solve the system of equations given by 3x+ 4y= 5 and 21x+ 28y= 35.

neonofarm [45]

Answer:

(5/4-3/4)

divide both sides by -7 then line them up and solve the equation and delete one variable.

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3 years ago

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olga2289 [7]

Answer:

Step-by-step explanation:

The area of the equilateral triangle is $\frac{\sqrt{3}}{4}(6)^{2}=\boxed{9\sqrt{3}}$

3 0

2 years ago

Help me on iready i need help

mash [69]

Answer:

13/20

Step-by-step explanation:

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3 years ago