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3 years ago

1/4 , 1, 4, 16, 64, , ,

Mathematics

2 answers:

tiny-mole [99]3 years ago

6 0

I think the answer is 256, 1024,4096

Pavlova-9 [17]3 years ago

4 0

Answer:

256, 1024, 4096

Step-by-step explanation:

Multiply the number by 4 to get the next one.

Brainliest please

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There are 25 desks in a classroom. The number of rows is five less than twice the number of desks in each row. Find the number o

anastassius [24]

Let's say each row has x desks and there are y rows.

We then know that x*y =25

We also know that x*2-5=y (number number of rows is five less than twice the number of desks in each row)

So we substitute: x*(x*2-5)=25
putting numbers out of the brackets:
2x*x-5x=25

2x*x-5x-25=0

(2x+5)(x-5)=0 (this bracketing is true: you can check it by expanding it:
2x*x-10x+5x-25

So that means that either x=-2.5which can't be : there can't be a fractional number of benches,

or x=5
so each row has 5 desks and there are 2*5-5 rows, or 5 rows.

6 0

4 years ago

How do you expand ln(1/49^k)

loris [4]

Answer:

There are a few rules that we can use here:

ln(a^x) = x*ln(a)

ln(a) - ln(b) = ln(a/b)

ln(1) = 0

So here we want to expand:

ln(1/49^k)

First we can use the second property to get:

ln(1/49^k) = ln(1) - ln(49^k)

using the third property, we have:

ln(1/49^k) = ln(1) - ln(49^k) = 0 - ln(49^k)

ln(1/49^k) = - ln(49^k)

Now we can use the first property to get:

ln(1/49^k) = - k*ln(49)

Now we can use the fact that:

49 = 7*7 = 7^2

then:

- k*ln(49) = -k*ln(7^2) = -2*k*ln(7)

So we have:

ln(1/49^k) = (-2*ln(7))*k

We can expand it anymore because this is a real number "(-2*ln(7))" times a variable k.

7 0

3 years ago

Supposed a certain game is fair and costs $4 if you lose and has a net payoff of $9 if you win. The only

Gekata [30.6K]

Answer:

32.5% Win Rate

Step-by-step explanation:

I got this answer by first:

( 9 ) * x + ( -4 ) * ( 1 - x ) = 0

9x - 4 + 4x = 0

13x = 4

then finally:

13/4 = 3.25 | And to get that into percent you multiply that by 10, giving you a 32.5% win rate. or 325 / 1000. Meaning you will win 325 out of 1000 games you play. Hope this helped!

4 0

3 years ago

If 10% of a group ate sandwiches two days in a row, and 40% of the group had a sandwich on the first day, this means that 25% of

Charra [1.4K]

The problem can be represented on a Venn diagram, as shown below.

We have P(Day 1 ∩ Day 2) = 0.1 and P(Day 1) = 0.4
We can deduce that 30% of the group ONLY had sandwiches on Day 1 and there's 60% of the group ONLY had sandwiches on Day 2.

We obtain the value 60% = 0.6 from 100%-(10%+30%)=60%

We also can deduce that there 70% of the group that had sandwiches on Day 2

The proportion of people who ate sandwiches on Day 2 GIVEN that they ate sandwiches on Day 1 is given by

P(Day 1 ∩ Day 2)÷P(Day 2) = 0.1÷0.4 = 0.25 = 25%

The statement is TRUE

7 0

3 years ago

Alex decides that he wants to ride the taxi. The cost of the taxi is fixed at $4.00, no matter how many miles you go. For each m

Anestetic [448]

Answer:

56 miles

Step-by-step explanation:

First, we minus the total paid with the cost of the taxi = $18-$4 = $14

$14 is what Alex paid for total of miles she travel

Each mile = $0.25

So, $14 ÷ $ 0.25 = 56 miles

8 0

3 years ago

1/4 , 1, 4, 16, 64, ________, ________, ________

1/4 , 1, 4, 16, 64, , ,