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faust18 [17]
3 years ago
9

Use this numbers and make it into an expression.

Mathematics
1 answer:
maks197457 [2]3 years ago
8 0
4(25 x 3) +15 to the tenth power
Is this what u we’re looking for? Hope this helps!
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Veronika [31]
The answer would have to be 12
6 0
3 years ago
2^4n × 2^ 2n = 512<br> What is the value of n.
Marina86 [1]

Step-by-step explanation:

{2}^{4n}  \times  {2}^{2n}  = 512

{2}^{4n}  \times  {2}^{2n}  =  {2}^{9}

{2}^{4n + 2n}  =  {2}^{9}

6n = 9

n  = \frac{3}{2}

8 0
2 years ago
Read 2 more answers
5a-3b+c+(4-5b-c) ayuda
JulsSmile [24]
La respuesta es 5a - 8b + 4
5 0
3 years ago
WILL MARK BRAINLIEST IF CORRECT! ANSWER A, AND B, I GOT 5 MINS
Schach [20]

Answer:

dollar amount in decimal is 0.55

in fraction form is 11/20

8 0
3 years ago
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
3 years ago
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