3 years ago

Aron is given $2.50 by his uncle and twice as much by his aunt. How much has Aron given in total?

Mathematics

1 answer:

Ivan3 years ago

6 0

$7.50 bihgvjutfrthvfyjcyhvg

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Complete the double number to line show percentages of $50

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3 years ago

Find the area of the following figure. Explain how you found your answer.

iragen [17]

Answer:

Below

Step-by-step explanation:

Let's say that each square on the grid represents 1 cm

First find the area of the two triangles

For the larger one: A = bh/2

A = 3 x 3 / 2

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For the smaller one : A = bh/2

A = 2 x 2 / 2

= 2 cm^2

For the rectangle : A = lw

A = 4 x 5

= 20 cm^2

Add them all up to get the area

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3 years ago

Which value of x does not satisfy the equation sin^2x + sin x = 0

zzz [600]

Answer:

$x \neq 0 \pm \pi \cdot i, \forall i \in \mathbb{N}_{O}$ and $x \neq \frac{3\pi}{2}\pm 2\pi \cdot j, \forall j \in \mathbb{N}_{O}$ .

Step-by-step explanation:

The equation can be simplified with the help of trigonometric identities:

$\sin x \cdot (\sin x + 1) = 0$

Which means that equation is equal to zero if any component of the product is zero. The solutions of the expression are:

a) $\sin x$

$x = 0 \pm \pi\cdot i,\forall i \in \mathbb{N}_{O}$

b) $\sin x + 1$

$\sin x + 1 = 0$

$\sin x = -1$

$x = \frac{3\pi}{2} \pm 2\pi\cdot i,\forall i \in \mathbb{N}_{O}$

Any value different of both subsets do not satisfy the equation described above.

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3 years ago