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ankoles
2 months ago
6

A very large book has pages numbered from 1 to 11521. How many times is the digit 3 printed? Helppp

Mathematics
1 answer:
AnnZ [12.3K]2 months ago
7 0
The count of pages from page X to page Y is determined by Y minus X plus 1. For instance, from 1 to 9, it results in 9 minus 1 equals 8 plus 1, totaling 9.
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If (a^3+27)=(a+3)(a^2+ma+9) then m equals
Inessa [12570]

Answer:

m = - 3

Step-by-step explanation:

a³ + 27 can be recognized as a sum of cubes, which factors generally as

a³ + b³ = (a + b)(a² - ab + b²). Therefore:

a³ + 27

= a³ + 3³

= (a + 3)(a² - 3a + 9).

By comparing a² - 3a + 9 to a² + ma + 9, we find that

m = - 3.

7 0
2 months ago
A church has 8 bells in its bell tower. Before each church service 5 bells are rung in sequence. No bell is rung more than once.
Inessa [12570]
Utilize the! operation to determine the count of combinations.

8!/5! = 40,320/120 = 336
8 0
2 months ago
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A periscope is 5 feet above the surface of the ocean. Through it can be seen a ship that rises to 50 feet above the water. To th
PIT_PIT [12445]

The maximum distance visible on Earth is calculated using the formula d=\sqrt{8,000h_1} + \sqrt{8,000h_2}

h_1= your initial height and h_2= your secondary height

In this case, h_1=5 represents the height of the periscope and h_2=50 denotes the height of the ship, leading us to a distance of 832.45553203368 feet. However, rounding to the nearest mile yields the answer as 11^a^0

If there are any discrepancies, please inform me and I will recalculate!

5 0
2 months ago
A village wishes to measure the quantity of water that is piped to a factory during a typical morning. A gauge on the water line
Zina [12379]
122 is the
result. I believe this helps
4 0
1 month ago
In 2010, Rafik bought a house. In 2015, Rafik sold the house to Bianca. He made a 20% profit on the sale. In 2019, Bianca sold t
zzz [12365]

Answer:

£170,000

Step-by-step explanation:

En 2010, Rafik adquirió una casa. Supongamos que el precio de compra fue $x. En 2015, Rafik vendió la casa a Bianca obteniendo un 20% de ganancia. Esto se traduce en 20% de x lo que equivale a 0.2 × x = 0.2x. Por tanto, Rafik vendió la casa a Bianca por x + 0.2x = 1.2x. Bianca compró la casa a 1.2x.

La casa fue vendida por Bianca en 2019 con una pérdida del 5%. Esto implica que el 5% de pérdida equivale a 0.05(1.2x) = 0.06x.

Por consiguiente, la venta de la casa por Bianca se realizó a 1.2x - 0.06x = 1.14x. Dado que la casa se vendió por £193,800.

⇒ 1.14x = 193,800

x = 193,800/1.14

x = £170,000

Rafik pagó £170,000 por la casa en 2010.

7 0
2 months ago
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