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3 years ago

How many stones are needed to trade for 10bricks ?

Mathematics

1 answer:

lianna [129]3 years ago

6 0

You need 10 logs for 1 brick. To get 10 bricks you need 100 logs. You are collecting stones and 1 stone gets you 4 logs. That means to get 100 logs you’ll need 25 stones. That indirectly means that 25 stones gets you 10 bricks.

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A skateboarder traveled 3/5 of a mile in 1/20 of an hour. What was the skateboarder's speed in miles per hour

Illusion [34]

3/5 mile in 1/20 hours =3 minutes . so in 1 minute he skates 1/5 of a mile . in 60 minutes he skates 12 miles . speed is 12mph

8 0

3 years ago

Read 2 more answers

The ratio of people to books in a classroom is 10:4 what is the unit rate of people per book

Alex73 [517]

Answer:

Unit rate of people per book = 2.5

Step by step explanation:

Given:

Number of peoples = $10$

Number of books = $4$

Their ratios = $10 : 4$

We have to find the unit rate of people per book.

To find out the unit rate of people per book we have to divide the total number of peoples by the total number of books.

For this we will follow the unitary method:

For $4$ book there are $10$ persons.

For $1$ book there will be $\frac{10}{4}$ persons.

So,

The numeric value = $\frac{10}{4}$

= $2.5$

There are 2.5 people per book and that it also the unit rate of people per book.

6 0

3 years ago

Which of these expressions is equivalent to (x^2 y^3)^-2(y^2 z^3)^3?

nata0808 [166]

The answer to the question is d

5 0

3 years ago

6 to 8 what is the ratio?

Ivanshal [37]

Answer:

3 to 4

Step-by-step explanation:

6:8 = 3:4

3 0

3 years ago

Read 2 more answers

P and q are complex numbers such that |p|=2/5x+1 , |q|=x+1 , and |p+q|=3x+2 .

IrinaVladis [17]

Answer:

Step-by-step explanation:

Given that,

|P| = 2x / 5 + 1

|Q| = x + 1

|P+Q| = 3x + 2

We know that, from Cauchy inequalities

|P| + |Q| > |P+Q|

(2x / 5) + 1 + x + 1 > 3x + 2

(2x / 5) + 2 + x > 3x + 2

Multiply through by 5

2x + 10 + 5x > 15x + 10

Collect like terms

2x + 5x - 15x > 10 -10

-8x > 0

Then,

Divide both side by -8, since we are dividing with a negative number the inequality sign will change

Then,

x < 0 first condition

Note that,

|P| > 0

Then,

2x / 5 + 1 > 0

2x / 5 > -1

2x > -5

x > -5/2

Also,

|Q| > 0

x + 1 > 0

x > -1

Also

|P+Q| > 0

3x + 2 > 0

3x > -2

x > -2 / 3

So, comparing the four conditions

We see that x ranges from -5/2 to 0, this range covers all the other ranges

(-5/2, 0)

The first answer is correct

7 0

3 years ago