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Vanyuwa [196]
3 years ago
15

Please help! 19 points

Mathematics
1 answer:
kondor19780726 [428]3 years ago
4 0

Answer:

The answer is 5.

Step-by-step explanation:

After 5 days both actors will charge $625.

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Can a triangle with side lengths of 8, 15, and 17 be a right triangle?
Nookie1986 [14]
Yes it is. 
Glad to help!
7 0
3 years ago
Read 2 more answers
This is the pond in a shape of a prism, it is completely full of water. Colin uses a pump to empty the pond. The level goes down
AnnZ [28]

Answer:

150 minutes

Step-by-step explanation:

P.S - The exact question is -

Given - This is the pond in a shape of a prism, it is completely full of

             water. Colin uses a pump to empty the pond. The level goes

             down by 20 cm in the first 30 min.

To find - Work put how many minutes Colin has to wait for the pond

               to completely empty.

Proof -

Given that,

Height of prism = 1 m

Also,

Base of the prism is trapezium and

Sides of the trapezium are 0.6 m and 1.4 m

Height of trapezium is 2 m

We know that,

Area of trapezium = \frac{1}{2}× (sum of sides)× height

                             =  \frac{1}{2}× (0.6 + 1.4)× 2

                             =  \frac{1}{2}× (2)× 2

                             =  2 m²

⇒Area of trapezium = 2 m²

Now,

Volume of prism = Area of trapezium × height of prism

                          = 2 m² × 1 m

                          = 2 m³

⇒Volume of prism = 2 m³

Now,

Given that the level goes down by 20 cm in the first 30 min

We know

100 cm = 1 m

⇒1 cm = \frac{1}{100} m = 0.01 m

⇒20 cm = 20×0.01 m = 0.2 m

⇒The level goes down by 0.2 m in the first 30 min.

Also,

we know that height of water = height of prism = 1 m

So, the remaining water left in the pond = 1 m - 0.2 m = 0.8 m

Also,

Volume of Remaining water = Area of trapezium × height

                                           = 2 m² × 0.8 m

                                           = 1.6 m³

⇒Volume of Remaining water = 1.6 m³

Now,

Volume of emptied water = Total Volume - Volume of Remaining water

                                       = 2 m³ - 1.6 m³

                                       = 0.4 m³

⇒Volume of emptied water = 0.4 m³

Now,

0.4 m³ water will be empty in 30 minutes

⇒ 1 m³ water will be empty in \frac{30}{0.4} = 75 minutes

⇒1.6 m³ water will be empty in 1.6 × 75 = 120 minutes

∴ we get

The remaining water is empty in 120 minutes

So,

Total pond is empty in 120 + 30 minutes

⇒Total pond is empty in 150 minutes

5 0
2 years ago
Eight More than four times a Number is negative 20
gizmo_the_mogwai [7]

Answer:

If this is what I think it is then your answer is 4x + 8 = -20

3 0
2 years ago
Write a polynomial equation in standard form with roots of -3 and 4
liubo4ka [24]

Answer:

I don't know the answer

Step-by-step explanation:

the most seats in guyan

6 0
2 years ago
A sphere has a radius of 15 m. If the radius is divided by 5, what is the effect on the surface area?
Romashka [77]
The surface area is multiplied by 5.
The surface area is divided by 5.
The surface area is divided by 25.
The surface area is multiplied by 25.
5 0
3 years ago
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