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babunello [35]
3 years ago
12

Find the value of the variable(s). If your answer is not an integer, leave it in simplest radical form.

Mathematics
1 answer:
algol133 years ago
4 0
Answers:
x = 24
y = 8√3
Explanation:

1) Since, the given triangle is a right triangle, and you have both an angle and the hypotenuse length, you can use some trigonometric ratios to find the variables.

2) The variables given represent:

x: adjacent-leg to angle 30°
y: opposite length to angle 30°

3) sine ratio:

sin 30° = opposite-leg / hypotenuse = y / (16√3)

⇒ y = 16√3 sin 30° = 16√3 × (1/2) = 8√3

4) cosine ratio

cos 30° = adjacent-leg / hypotenuse = x / (16√3)

⇒ x = 16√3 cos 30° = 16√3 (√3 / 2) = 16 × 3 / 2 = 24

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A rectangular prism is 7 cm long, 4 cm wide and 4 cm tall. How many 2 times 2 times 2 cm cubes can the prism be cut into? What i
Fantom [35]

Answer: The number of 2 times 2 times 2 cm cubes is 14. The total surface area of all the 2 times 2 times 2 times cm cubes is 336 cm square. The total volume of all the 2 times 2 times 2 times cm cubes is 112 cm cube.

Explanation:

It is given that the A rectangular prism is 7 cm long, 4 cm wide and 4 cm tall.

The volume of rectangular prism is,

V_1=l\times b\times h

V_1=7\times 4\times 4

V_1=112

Therefore, the volume of rectangular prism is 112 cm square.

The volume of cubes is,

V_2=a^3

V_2=(2)^3

V_2=8

The number of cubes in the rectangular prism is,

N=\frac{V_1}{V_2} =\frac{112}{8} =14

Therefore, the number of cubes is 14.

Total surface area of a cube is,

A=6a^2

A=6(2)^2

A=24

Total surface area of all cubes is,

14\times A=14\times 24=336

Therefore the total surface area of all cubes is 336 cm square.

Total volume of all cubes is equal t the volume of rectangular prism, i.e, 112 cm cube.

5 0
3 years ago
5) (4 pts)
Iteru [2.4K]

Answer:

range is 9

Step-by-step explanation:

4 0
3 years ago
A circle is centered at the point (-7, -1) and passes through the point (8, 7).
Elan Coil [88]
Radius = √(7-(-1))² + (8-(-7))² = √8²+15² = √289 = 17

Let the point be (-15,y)
(-15-(-7))² + (y-(-1))² = 17²
⇒ -8² + (y+1)²  = 17²
⇒ 64 + (y+1)² = 289
⇒ (y+1)² = 289 - 64 = 225
⇒ y+1 = +15 or -15
⇒ y = +15-1    or    -15-1
⇒ y = 14    or    -16

T<span>h</span>us, the point can be either (-15,14) or (-15,-16)


3 0
3 years ago
Read 2 more answers
Factoring trinomials
Tcecarenko [31]

c^22c^2 + 13c +21 \\4c^2 + 13(2)c + 42\\(2c + 6)(2c+7)\\(c+3)(2c+7)


This is a way to factoring trinomials (there exist different equivalent methods).

Multiply the trinomial but the term accompanying  c^2. This is the second line. Then, you could take the square of the 4c^2, ant try to create a factor () () that will correspond to the expression in the second line. That is, we want 4c^2 + 13(2) c + 42 = (2c + ?) (2c + ?)

In ? we put the corresponding numbers that, if we multiply them we will obtain 42, and if we add them we will obtain 13. This numbers are 6 and 7. Then, we have (2c + 6) (2c +7)

The last step is divide by the number that we multipy in the first step.

4 0
3 years ago
Buffy is considering taking out a 14-year loan with monthly payments of $165 at an APR of 2.3%, compounded monthly, and this equ
8_murik_8 [283]
PVAO=p [(1-(1+I/k)^(-kn) /(I/k)]
P payments 165
I interest rate
K compounded monthly
N time 9

165×((1−(1+0.027÷12)^(−12×14))÷(0.027÷12))
=23,061.76

165×((1−(1+0.029÷12)^(−12×14))÷(0.027÷12))
=24,446.65...correct

165×((1−(1+0.025÷12)^(−12×14))÷(0.027÷12))
=21,637.39

165×((1−(1+0.021÷12)^(−12×14))÷(0.027÷12))
=18,665.68 .....correct
The answers are b d

3 0
3 years ago
Read 2 more answers
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