Use the digits 4,5 and 6 to write a number in which 4 has a value of 400. Explain your thinking.

Mathematics

1 answer:

andre [41]3 years ago

7 0

456 or 465. Each one has 4 in the hundreds place.
5) 920,438 .. I took 1000 from 921,438.
6) 175,000 . I added a one in the hundred thousands place
7) 7500 hundreds + 0 tens + 2 ones
7500 tens + 2 ones
7,502 ones
8) 15600 hundreds + 30 tens + 8 ones
15630 tens + 8 ones
15638 ones

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20. An amount of money was shared among five boys Ali, Juma, Musa, Khalid and Mustafa. Ali got /8 of the total amount while Juma

Nadusha1986 [10]

Answer:

$x=\frac{18000}{7}=2571\frac{3}{7}$

Step-by-step explanation:

Let the total amount be x

Then Ali got 1/8x With 7/8x left

Juma got 7/40x with 7/10x left

Musa, Khalid and Mustafa got 7/30x each

since $\frac{7}{30}x=600$

7x=18000

$x=\frac{18000}{7}=2571\frac{3}{7}$

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2 years ago

Write and equation on the line that passed through (0,-1) and is perpendicular to the line y =1/9x+2

Marat540 [252]

Answer:

y=-9x-1

Step-by-step explanation:

since it is perpendicular, the slope must be the opposite reciprocal (-9x) and now we plug the coordinates in, -1=0+b, b is -1

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3 years ago

a traveler has 7 pieces of luggage . how many ways can the traveler select 3 pieces of luggage for a trip

7nadin3 [17]

Well, you could assign a letter to each piece of luggage like so...

A, B, C, D, E, F, G

What you could then do is set it against a table (a configuration table to be precise) with the same letters, and repeat the process again. If the order of these pieces of luggage also has to be taken into account, you'll end up with more configurations.

My answer and workings are below...

35 arrangements without order taken into consideration, because there are 35 ways in which to select 3 objects from the 7 objects.

210 arrangements (35 x 6) when order is taken into consideration.

*There are 6 ways to configure 3 letters.

Alternative way to solve the problem...

Produce Pascal's triangle. If you want to know how many ways in which you can choose 3 objects from 7, select (7 3) in Pascal's triangle which is equal to 35. Now, there are 6 ways in which to configure 3 objects if you are concerned about order.