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3 years ago

What is 40% of 10? PLZ HELP ASAP

Mathematics

2 answers:

Galina-37 [17]3 years ago

6 0

Answer:

Step-by-step explanation:

10 * 40%

10 * 0.4 = 4

Minchanka [31]3 years ago

6 0

Answer:

Hi! 40% of 10=4

Step-by-step explanation:

Hope this helps! :)

Have a nice day! ♥

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Consider the following statements. Select all that are always true.

densk [106]

Answer:

A, B, D and E

Step-by-step explanation:

Given

Options A to F

Required

Determine which is true

Option A:

This is always true;

Take for instance the following rational numbers

$a = \frac{1}{2}$ $b = \frac{1}{3}$

$a + b = \frac{1}{2} + \frac{1}{3}$

$a + b = \frac{3 + 2}{6}$

$a + b = \frac{5}{6}$

This will always result in a rational number

Option B:

This is always true;

Take for instance the following rational number

$a = 0.5$

And the following irrational number

$b = 3.142857$

$a + b =0.5+ 3.142857$

$a + b =3.642857$

This will always result in an irrational number

Option C:

This is not always true;

1. Take for instance the following irrational numbers

$a = 0.33333$ $b = 3.142857$

$a + b =0.33333 + 3.142857$

$a + b =3.476187$

2. Take for instance the following irrational numbers

$a = 3 + \sqrt5$ $b = -\sqrt5$

$a + b = 3 + \sqrt5 - \sqrt5$

$a + b = 3$

From the above examples, this implies that the statement is not always true

This is always true;

Take for instance the following rational numbers

$a = \frac{1}{2}$ $b = \frac{1}{3}$

$a * b = \frac{1}{2} * \frac{1}{3}$

$a * b = \frac{1}{6}$

This will always result in a rational number

This is always true;

Take for instance the following rational number

$a = 0.5$

And the following irrational number

$b = 3.142857$

$a * b =0.5 * 3.142857$

$a * b =1.5714285$

This will always result in an irrational number

This is not always true;

1. Take for instance the following irrational numbers

$a = 0.33333$ $b = 3.142857$

$a * b =0.33333 * 3.142857$

$a * b =1.04760852381$

2. Take for instance the following irrational numbers

$a = 3 + \sqrt5$ $b = 0$

$a * b = (3 + \sqrt5) * 0$

$a * b = 0$

From the above examples, this implies that the statement is not always true

3 0

3 years ago

Read 2 more answers

Y=15+36.5x Y=60+28.5x

Eva8 [605]

1) 15+36.5x=60+28.5x

2) Subtract 28.5x from 36.5x to get 8. 8x+15=60

3) Subtract 15 from 60. 8x=45

4) Divide 45 by 8. x=5.625

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3 years ago

A certain component is critical to the operation of an electrical system and must be replaced immediately upon failure. If the m

nekit [7.7K]

Answer:

Step-by-step explanation:

From the given information:

Assuming we have an integer c to represent the components in the stocks.

Thus, the needed probability can be expressed as:

$P(X_1+X_2+ ........ X_c \ge 2000)$

To break this down, we have:

$P(\sum X_i \ge 2000) = P \Bigg(\dfrac{\sum X_i - 100n}{\sqrt{n \ Var (X)}} \ge \dfrac{2000-100 n }{\sqrt{n \times 900}} \Bigg )$

$P \Bigg(\dfrac{\sum X_i - 100n}{\sqrt{n \ Var (X)}} \ge \dfrac{2000-100 n }{\sqrt{n \times 900}} \Bigg )= P (Z \ge 0.95 ) \ \ \ because \ Z_{0.05} = -1.65 \\ \\ \\ \dfrac{2000-100 n }{\sqrt{n \times 900}} = -1.65 \\ \\ \\ \dfrac{100\ n-2000 }{\sqrt{900n}} = 1.65 \\ \\ 100 n -1.65 \sqrt{900 n }-2000 = 0$

By solving the equation:

n = 23

Thus, relating to the needed condition; n ≥ 23

The needed number of the components that should be in stock should be at least 23.

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3 years ago

Solve for X show me what steps to do for this one

Aleksandr-060686 [28]

Answer:

x = 24

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

120° is an exterior angle of the triangle, then

2x + 3x = 120

5x = 120 ( divide both sides by 5 )

x = 24

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3 years ago

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Graph of a cubic polynomial that falls to the left and rises to the right with x intercepts negative 3, negative 1, and 3 Which

bagirrra123 [75]

The correct answer is Choice A.

If you graph the function on a graphing calculator, you will find that it matches all of the necessary parts. If falls to the left and rises to the right.

It also has zeros at -3, -1 and 3.

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3 years ago

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