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3 years ago

12

The price of a stock had a change of –3 dollars. explain how you would use a number line to find the absolute value of –3.

2 answers:

pickupchik [31]3 years ago

7 0

Sample Response: Plot –3 on a number line. Find the distance the point is from 0. –3 is 3 units from zero. The absolute value is the distance from 0. The absolute value of –3 is 3.

Naya [18.7K]3 years ago

5 0

Draw out a horizontal line. Place 0 at the center. Then place evenly spaced tick marks on either side of 0. Label the right side of tick marks as 1, 2, 3, ... moving from 0 and going to the right

Label the left side of tick marks -1, -2, -3, ... starting at 0 and moving left

The location -3 on the number line is exactly 3 units away from 0. We start at 0 and move to -3 by moving 3 spots to the left; or we start at -3 and move 3 units to the right to get to 0.

Therefore, the absolute value of -3 is 3
Absolute value on a number line is the distance a number is from 0
The distance is never negative

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En un triángulo rectángulo A es un ángulo agudo y Sen A = 4/5 ¿Cuál será el valor de Tan A?

Nonamiya [84]

Answer:

$\displaystyle \tan A=\frac{4}{3}$

Step-by-step explanation:

<u>Funciones Trigonométricas</u>

La identidad principal en trigonometría es:

$sen^2A+cos^2A=1$

Si sabemos que A es un ángulo agudo (que mide menos de 90°), su seno y coseno son positivos.

Dado que Sen A = 4/5, calculamos el coseno:

$cos^2A=1-sen^2A$

Sustituyendo:

$\displaystyle cos^2A=1-\left(\frac{4}{5}\right)^2$

$\displaystyle cos^2A=1-\frac{16}{25}$

$\displaystyle cos^2A=\frac{25-16}{25}$

$\displaystyle cos^2A=\frac{9}{25}$

Tomando raíz cuadrada:

$\displaystyle cos\ A=\sqrt{\frac{9}{25}}=\frac{3}{5}$

La tangente se define como:

$\displaystyle \tan A=\frac{sen\ A}{cos\ A}$

Substituyendo:

$\displaystyle \tan A=\frac{\frac{4}{5}}{\frac{3}{5}}$

$\displaystyle \tan A=\frac{4}{3}$

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3 years ago

Find the equation of the straight line which passes through (3,5) and makes y-inte<br>r-intercept.

elixir [45]

Answer:

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Step-by-step explanation:

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Ostrovityanka [42]

Answer: HOPE THIS HELPS! :D ;P

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Step-by-step explanation:

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3 years ago

4. These polygons are similar, but not drawn to scale. Find the value of x.

Dafna11 [192]

Answer

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Step by step explanation:

It is a dilation to you would divide the known sides with each other.

8/2=4

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So, you would then multiply 2.5 by 4 which would get you 10

preetty sure this is it, if its wrong then im sorry

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2 years ago

Evaluate N^2 + 2N 1 for N=5

Murljashka [212]

Answer:

35

Step-by-step explanation:

write 5 in N's place

5^2+2×5×1

25+10

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