Answer:
b = 7√3
Step-by-step explanation:
This 30°- 60°- 90° triangle has the proportions:
side opposite of the 30° angle = x
side opposite of the 60° angle = x√3
side opposite of the 90° angle = 2x
____________________________
Given the side opposite of the 30° angle which is 7 units long, this can be thought of as x. Knowing the proportions of the other sides, we can find b knowing that this is the side opposite of the 60° angle which is x√3.
Since x = 7, x√3 = 7√3, and therefore
b = 7√3.
Answer:
nice
Step-by-step explanation:
whats the rest of the problem or is it just that she rolled a dice
Answer:
El costo de alquiler de cada película es $26 y el costo de alquiler de cada juego de video es $59.50.
Step-by-step explanation:
A partir de la información proporcionada, puedes escribir las siguientes ecuaciones:
4x+8y=580 (1)
2x+3y=230.50 (2), donde:
"x" es el costo de alquiler de cada película y "y" es el costo de alquiler de cada juego de video.
Primero, puedes despejar x en (1):
4x=580-8y
x=145-2y (3)
Segundo, debes reemplazar (3) en (2):
2(145-2y)+3y=230.50
290-4y+3y=230.50
290-230.50=4y-3y
y=59.50
Tercero, debes reemplazar el valor de y en (3) para encontrar el valor de x:
x=145-2(59.50)
x145-119
x=26
De acuerdo a esto, la respuesta es que el costo de alquiler de cada película es $26 y el costo de alquiler de cada juego de video es $59.50.
Answer:
- A. A neutrally-charged carbon atom contains 6 positively-charged protons and 6 negatively-charged electrons. CORRECT
- B. The average temperature in Cleveland, Ohio in December is 38∘F. On a particularly cold day last year, the temperature change was −38∘F from the previous day. CORRECT
- C. A model rocket flies 50 meters into the air. It falls 50 meters before it hits the ground. CORRECT
- D. The price of gold is $3.00 per ounce less than it was yesterday. WRONG
Explanation:
The <em>additive inverse property</em> is the property that states that the addtiion of a number with its negative is zero: b + (-b) = 0.
Let's see every choice:
- A. A neutrally-charged carbon atom contains 6 positively-charged protons and 6 negatively-charged electrons. CORRECT
6 positively'charged protons ⇒ charge +6
6 negatively charged electrons ⇒ charge -6
Total charge = +6 + (-6) = 0
The result is that the atom has a zero net charge.
- B. The average temperature in Cleveland, Ohio in December is 38°F. On a particularly cold day last year, the temperature change was −38°F from the previous day. CORRECT
Temperature of a day is 38° F
Change of temperature was - 38° F
Resulting temperature: 38° F + ( -38° F) = 0
- C. A model rocket flies 50 meters into the air. It falls 50 meters before it hits the ground. CORRECT
50 meters upward ⇒ +50 m
50 meters downward ⇒ -50 m
Final altitude = +50 m + (-50 m) = 0
- D. The price of gold is $3.00 per ounce less than it was yesterday. WRONG
Price of yesterday : x
Price of today: x - 3.00
This is not the application of the additive inverse property.
