Answer:
81 books
Step-by-step explanation:
If you divide 731 into 9 you'll get 81.2
so that means you have 2 books left over that wont be on the shelf
so you'll have to round to 81
The width of the lake is approximately 4.93 kilometers.
To calculate the width of the lake, you can use trigonometry. You have a triangle with one side of 5 km (from point C to point A), another side of 8 km (from point C to point B), and an included angle of 36 degrees at point C.
You can use the law of cosines to find the third side, which is the width of the lake (let's call it "x"). The law of cosines states:
Where:
c is the side you want to find (the width of the lake, in this case).
a is the side opposite to angle A (5 km).
b is the side opposite to angle B (8 km).
C is the included angle at point C (36 degrees).
So, plug in the values:
(36 degrees)
Now, you can solve for x:
(36 degrees)
(36 degrees)
Now, you'll need to calculate the cosine of 36 degrees, which is approximately 0.809.
Now, take the square root of both sides to find the width of the lake:
x ≈ √24.28
x ≈ 4.93 km
So, the width of the lake is approximately 4.93 kilometers.
for such more question on triangle
#SPJ2
Hi mods, I do have a link in this answer but it is a link to the spanish version of brainly since this user seems to speak spanish.
Por favor, traduzca su pregunta al inglés o encuentre la versión en español de Brainly (https://brainly.com.br/ o https://brainly.lat/.)
Estoy usando el traductor de google, lo siento por el mal español
ver diagrama adjunto abajo (el asombrosamente dibujado)
podemos formar un triangulo
Usa la ley de los cosenos del segundo apego.
Queremos encontrar el valor de c que representa el ancho del lago
En este problema, a=5, b=8, y C=36°
c≈4.92734 km
el ancho del lago es de aproximadamente 4.93km
watching a television with a 13-inch screen to a television
with a similar 19-inch screen. If a boxcar
appeared 8 inches long on the 13-inch screen, how
long, to the nearest inch, will it appear on the 19-inch
screen?
The boxcar will appear 12 inches long on the 19-inch screen.
To find out how long the boxcar will appear on the 19-inch screen, we can set up a proportion using the relationship between the screen sizes and the length of the boxcar. Let's call the length of the boxcar on the 19-inch screen 'x'. So, we have the proportion:
13/8 = 19/x
Solving for 'x', we can cross multiply and divide:
x = (19 * 8)/13
Calculating this gives us 'x' to be approximately 11.7 inches. Rounding to the nearest inch, the boxcar will appear 12 inches long on the 19-inch screen.
#SPJ2
Answer:
(7,5)
Step-by-step explanation:
x1 +x2 /2
4+10/2=7
y1 + y2/2
7 +3=10/2 =5
The answer is (7,5).
A.–25
B.–9
C. -1/9
D. -1/25