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2 years ago

What is 2/3x2/5pls I need an answer fast sorry I suck at math

Mathematics

1 answer:

wlad13 [49]2 years ago

8 0

Answer:

4 /1 5 also 0.26666666666

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Have a great day, be safe and healthy

Thank u

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If y(x) = 4x, what is x when y(x) = 4 A. 1 B. 4 C. 2 D. 0

Eva8 [605]

Answer:

Step-by-step explanation:

cause if :

y=4

4(x)=4

4(1)=4

4=4

hope this helps

4 0

3 years ago

Solve for x in the equation: x^2 - x = 20

max2010maxim [7]

X=5
cuz 5^2=25
25-5=20

8 0

3 years ago

Which of the following have the property that a(x)=a−1(x)? I. y=x II. y=1/x III.y=x^2 IV. y=x^3 A. I and II, only B. IV, only C.

valentina_108 [34]

Answer:

Correct answer:

A. I and II

Step-by-step explanation:

First of all, let us have a look at the steps of finding inverse of a function.

1. Replace y with x and x with y.

2. Solve for y.

3. Replace y with $f^{-1}(x)$

Given that:

$I.\ y=x \\II.\ y=\dfrac{1}x \\III.\ y=x^2 \\IV.\ y=x^3$

Now, let us find inverse of each option one by one.

I. y = x, a(x) = x

Replacing y with and x with y:

x = y

x = $a^{-1}(x)$ = $a(x)$ Hence, I is true.

II. $y =\dfrac{1}{x}$

Replacing y with and x with y:

$x =\dfrac{1}{y}$

$x=\dfrac{1}{a^{-1}(x)}$

$\Rightarrow a^{-1}(x) = \dfrac{1}{x}$

$a^{-1}(x)$ = $a(x)$ Hence, II is true.

III. $y =x^{2}$

Replacing y with and x with y:

$x =y^{2}\\\Rightarrow y = \sqrt x\\\Rightarrow a^{-1}(x) = \sqrt{x} \ne a(x)$

Hence, III is not true.

IV. $y =x^{3}$

Replacing y with and x with y:

$x =y^{3}\\\Rightarrow y = \sqrt[3] x\\\Rightarrow a^{-1}(x) = \sqrt[3]{x} \ne a(x)$

Hence, IV is not true.

Correct answer:

A. I and II

4 0

3 years ago

A park bench is 2½ yards long and ⅓ yard deep. How many square yards is its sitting area?

Elan Coil [88]

Answer: 1.4259

Explanation: Square 2 1/2 comes up with 6 1/4 then square root that then multiply by 1/3

7 0

3 years ago

A person drives north 6 blocks, then drives west 6 blocks. the displacement is a straight line from the starting point to the fi

klemol [59]

For the answer to the question above, A person drives north 6 blocks, then drives west 6 blocks. the displacement is a straight line from the starting point to the finish in 8.49 blocks in a Northwest direction.
The Solution:
A^2+B^2=C^2

6*6+6*6 = sqrt(72)

6 0

3 years ago

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