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3 years ago

What is the symbol for integers?

Mathematics

1 answer:

Lemur [1.5K]3 years ago

5 0

Answer:

Step-by-step explanation:

The letter 'Z' represents integers.

it comes from the german word "zahlen" which translates to "numbers"

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X+(2x+3)+4x²-9=0<br>resoudre equation

Andru [333]

Answer:

Désolé, mon français est terrible, je vais donc utiliser traduction automatique ici.

x est approximativement égal à 0.906 et -1.656

Step-by-step explanation:

x + (2x + 3) + 4x² - 9 = 0

4x² + x + 2x + 3 - 9 = 0

4x² + 3x - 6 = 0

Nous ne pouvons pas prendre en compte cela, nous allons donc passer par la résolution de x à la place.

Commençons par compléter le carré:

4x² + 3x = 6

4x² + 3x + 9 / 16 = 6 + 9 / 16

(2x + 3/4)² = 96 / 16 + 9 / 16

(2x + 3/4)² = 105 / 16

2x + 3/4 = ± √105 / 4

2x = -3/4 ± √105 / 4

2x = (-3 ± √105) / 4

x = (-3 ± √105) / 8

x ≈ 0.906, -1.656

6 0

3 years ago

Help me create three polynomials that match the criteria on the left

liberstina [14]

Answer:

Symmetry of functions

A function is an even function if its graph is symmetric with respect to the yyy-axis.

Algebraically, fff is an even function if f(-x)=f(x)f(−x)=f(x)f, left parenthesis, minus, x, right parenthesis, equals, f, left parenthesis, x,

Step-by-step explanation:

MARK ME AS A BRAINLIST

5 0

2 years ago

What is the area of the sector with a central angle of 49° and a radius of 11 cm? Use 3.14 for pi and round your final answer to

olga_2 [115]

Answer:

$\boxed{\text{51.71 cm}^{2}}$

Step-by-step explanation:

If the angle θ is in radians, the formula for the area (A) of a sector of a circle is

A = ½r²θ

If θ is in degrees

$A = \dfrac{1}{2}r^{2}\theta \times \dfrac{\pi \text{ rad}}{180^{\circ}}= \pi r^{2}\times\dfrac{\theta }{360}$

Data:

θ = 49°

r = 11 cm

Calculation:

$\begin{array}{rcl}A& = &3.14\times 11^{2}\times\dfrac{49}{360}\\\\ & = &3.14 \times 121 \times 0.1361\\ & = & \mathbf{51.71}\\\end{array}\\\text{The area of the sector is }\boxed{\textbf{51.71 cm}^{2}}$

4 0

3 years ago

A scale drawing of a rectangular playground has a length of 20 inches and a width of 10 inches as shown.The scale is 1 inch = 15

nikitadnepr [17]

Answer:

4:9

Step-by-step explanation:

Find the area in inch first:

20 inch × 10 inch = 200 inch

Area in feet:

(20×15) + (10×15) = 450 inch

Area of the drawing : Area of the actual playground

200:450

Simplify it by dividing by 5

Last answer =4:9

3 0

2 years ago

The graph of h is the graph of f(x) = x2 translated 2 units left and 5 units up. What is the vertex form of this function?

natali 33 [55]

Answer:

A. $h(x) = (x+2)^{2}+5$

Step-by-step explanation:

First, we need to defined the two transformations required to derive $h(x)$ .

Vertical translation

$n(x) = m(x) +k$ , $k \in \mathbb{R}$ (1)

Where:

$k > 0$ , upwards.

$k < 0$ , downwards.

Horizontal translation

$n(x) = g(x+k)$ , $k\in \mathbb{R}$ (2)

Where:

$k > 0$ , leftwards.

$k < 0$ , rightwards.

Let $f(x) = x^{2}$ , if $h(x)$ is translated 2 units left and 5 units up, then we have the resulting expression:

$h(x) = (x+2)^{2}+5$ (3)

Hence, correct answer is A.

7 0

3 years ago