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4 years ago

Brainliest & points! i need help with math asap, show work too if possible :)

Mathematics

1 answer:

qwelly [4]4 years ago

4 0

Answer:

I think the answer is x is 16 and y is 20? I could be wrong tho

Step-by-step explanation:

First, subtract -7 from -1 to get 8.

Then, add the 12 and you get 16 for x.

First, subtract 7y from 9x to get 2y

Then, add 4 to get 20 for y.

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A group of hikers are 675 ft from the base of Guadalupe Peak, which is 8,749 ft tall. What is the angle of elevation when they l

amid [387]

Tan x = 8749/675
x= arctan (8749/675) arctan = tan^-1
x=85.59 degrees

6 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

3 years ago

−8 3/4÷2 1/6 please show me ur work

nalin [4]

Answer:

- 4 1/26

Step-by-step explanation:

<u>Solving in steps:</u>

- 8 3/4 ÷ 2 1/6 =
- 35/4 ÷ 13/6 =
- 35/4 × 6/13 =
- 35/2 × 3/13 =
- 105/26 =
- 4 1/26

6 0

3 years ago

What two numbers multiply to the value of -10 and add to the value of -3

N76 [4]

Answer:

-5 and 2

Step-by-step explanation:

-5+2=-3

-5*2=-10

5 0

3 years ago

Liam had $250. Then, he and his classmates bought a present for their teacher, evenly splitting the $p cost among the 24 of them

Mazyrski [523]

Answer:

Step-by-step explanation:

The number of children who contribute toward the present is represented as

The cost of the present is 120 and the children split the cost evenly between them. The expression for this is

Liam has to give towards the present

Liam has 250 with him

If he gives away, then the money he has left is:

Read more on Brainly.com - brainly.com/question/4681527#readmore

4 0

3 years ago

Read 2 more answers