All categories

3 years ago

Decide whether the sequence is arithmetic geometric or neither 5,-10,20, -40

1 answer:

7 0

Try this option^
note, that all members of this sequence have '-' and '+' and 5*(-2)=-10, -10*(-2)=20; 20*(-2)=-40.
It means, that the suggested sequence is geometric, where b₁=5, q=-2.

You might be interested in

The sum of the angle measures of a quadrilateral is 360 degree . Write and solve an equation to find the value of x . the two nu

trapecia [35]

Answer:

Step-by-step explanation:

I’m not too good with this but the answer should be 87.5

8 0

3 years ago

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:

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

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

6 0

2 years ago

WORTH 30 POINTS PLZZZZZZZZZZZ HELP

Black_prince [1.1K]

Answer:

sqrt(5)*sqrt(5)=5.

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

80 divided by (16 divided by 2/5 + 3.75

Katarina [22]

Answer:

1.8285714

Step-by-step explanation:

7 0

3 years ago

Find the length of WV

Luba_88 [7]

Answer:

I believe the answer would be 20.

Step-by-step explanation:

28/7 = 4

5*4 = 20

Pls mark brainliest <3

3 0

2 years ago

Read 2 more answers