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3 years ago

7. What is the force of tension in a rope that spins a 250 g object in a vertical circle with a radius of 50 cm if the

Mathematics

1 answer:

Phantasy [73]3 years ago

4 0

Subtract 250-50 which equals 200 and then multiply it by 3 which is 600

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0.4= Blankx10 please answer quick

Marta_Voda [28]

Answer:

1, 0.4

2, 0.004

3, 0.04

Step-by-step explanation:

hope this helps. :)

6 0

3 years ago

Priya measured the length of lizard to be 11 cm. The actual length is 12 cm. Find the % error.

Aleksandr [31]

Answer:

8.33%

Step-by-step explanation:

Formula for percent error:

$|\frac{observed value - expected value}{expected value} | * 100%$

Using this formula, we get:

$|\frac{11-12}{12} |* 100 = \frac{100}{12} = 8.33$

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8 0

2 years ago

The question is write the name of each term in the blank 938 +347 722 =2007

galben [10]

Answer:

Step-by-step explanation:

938 + 347 = 1285

2007 - 1285 = 722

CHECK:

938 + 347 + 722 = 2007

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

Solve a Quadratic EquationUse the following equation to answer the questions:3x2 - 8x + 1 = 314 1 pointWhat is the discriminant?

emmainna [20.7K]

Δ=88

1) Using the Quadratic Equation to Solve

3x²-8x+1=3

3x²-8x+1-3=3-3

3x² -8x -2=0

2)Let's find the discriminant

Δ= (-8)²-4(3)(-2)

Δ=64 -4(3)(-2)

Δ=88

8 0

1 year ago