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musickatia [10]
4 years ago
5

PLEASE HELP!! URGENT

Mathematics
1 answer:
harkovskaia [24]4 years ago
4 0
A=(1/2)a*b*sin(c)

1) 180-3-60=86
2)then you take the sin of this
3)Answer is 369.8
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70 POINTS PLEASE HELP! A dump truck pours sand into a container in the shape of a rectangular prism with a square base of length
galina1969 [7]

Answer:

A

Step-by-step explanation:

The volume of a rectangular prism is:

V=\ell wh

Since the prism has a square base, each side length being 2, this means that both the length and width of our prism is 2. Therefore:

V=(2)(2)h=4h

So, we can write:

V=4h

The height h increases at a rate of about 8 inches or 8/12 = 2/3 feet per minute.

So, after t minutes, the height will be 2/3(t) feet. Thus, we can substitute:

\displaystyle V=4\Big(\frac{2}{3}\Big)t=\frac{8}{3}t

We want to find after how long it will be until the volume is 64 cubic feet. So, V = 64:

\displaystyle 64 = \frac{8}{3} t

Solve for t:

\displaystyle t=\frac{3}{8}(64)=3(8)=24\text{ minutes}

The correct answer is A.

3 0
3 years ago
Read 2 more answers
A spherical balloon has a circumference of 25 cm.
ArbitrLikvidat [17]

Answer:

See below ↓↓

Step-by-step explanation:

<u>Finding the radius</u>

  • C = 2πr
  • 25 = 2 x 3.14 x r
  • r = 25 / 6.28
  • r = 3.98 cm ≅ 4 cm

<u />

<u>Surface Area</u>

  • 4πr²
  • 4 x 3.14 x 4 x 4
  • 3.14 x 64
  • 200.96
  • <u>201 cm²</u>

<u></u>

<u>Volume</u>

  • 4/3πr³ = 4πr² x r/3
  • 201 x 4/3
  • 67 x 4
  • <u>268 cm³</u>
4 0
2 years ago
What is thirty plus ten times five minus forty five divided by five
Zielflug [23.3K]
The answer would be 71
8 0
4 years ago
Have you ever been on or seen a ride like this at a fair or amusement park? Imagine being strapped into your seat at the bottom
Marysya12 [62]

The linear relationship is y = 20x, 0 ≤ x ≤ 17.5 and the quadratic relationship is y = -16x² + 288, 0 ≤ x ≤ 3√2

<h3>The equations that represent the relationships</h3>

<u>The linear relationship</u>

When making the trip up, we have:

Rate = 20 feet per seconds

This means that the relationship is:

Distance = Rate * Time

So, we have:

y = 20x

The height of the tower is 350.

So, we have:

20x = 350

Divide by 20

x = 17.5

Hence, the linear relationship is y = 20x, 0 ≤ x ≤ 17.5

<u>The quadratic relationship</u>

The quadratic equation can be represented as:

y = -0.5ax² + vx + h

Where:

  • a = acceleration due to gravity = 32
  • v = velocity = 0
  • h = height = 288

So, we have:

y = -0.5 * 32x² + 0 * x + 288

Evaluate

y = -16x² + 288

When you get to the ground level, we have:

-16x² + 288 = 0

Subtract 288 from both sides

-16x² = -288

Divide by -16

x² = 18

Take the square root of both sides

x = ±3√2

Remove negative domain

x = 3√2

Hence, the quadratic relationship is y = -16x² + 288, 0 ≤ x ≤ 3√2

Read more about linear and quadratic equations at:

brainly.com/question/72196

#SPJ1

5 0
2 years ago
A prisoner is trapped in a cell containing 3 doors. The first door leads to a tunnelthat returns him to his cell after 2 days’ t
Lelu [443]

Answer:

2 days

Step-by-step explanation:

Expected number of days until prisoner reaches freedom=E(x)=?

E(x)=x*p(x)

Where x is the number of days and p(x) is the probability associated with them.

X    1    2    3

P(x) 0.5 0.3 0.2

E(x)=1*0.5+2*0.3+3*0.2

E(x)=0.5+0.6+0.6

E(x)=1.7.

Thus, the expected number of days until prisoner reaches freedom are 2 days.

7 0
4 years ago
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