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1 year ago

A safe's lock has a three number combination. The

Mathematics

1 answer:

Nikolay [14]1 year ago

5 0

Answer:

720 combinations

Step-by-step explanation:

Each number has initially 10 options.

If one option used for the first number then the second number has one less, 9 options. Similarly, the third number has one less number of options than the second number, 8 options.

Total number of combinations is

10*9*8 = 720

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Express this number in scientific notation: 22 cm.

Tema [17]

2x 10^1 cm this will be the answer

5 0

3 years ago

The ratio of Aziz's money to Osman's money was 2:1 at first. After Aziz spent $10 ratio became 4:3. How much money did each boy

Dvinal [7]

Answer:

Aziz's money was $30

Osman's money was $15

Step-by-step explanation:

Let

x-----> Aziz's money at first

y-----> Osman's money

we know that

$\frac{x}{y}=\frac{2}{1}$

$x=2y$ ------> equation A

$\frac{x-10}{y}=\frac{4}{3}$ -----> equation B

substitute equation A in equation B and solve for y

$\frac{2y-10}{y}=\frac{4}{3}\\ \\6y-30=4y\\ \\6y-4y=30\\ \\2y=30\\ \\ y=15$

Find the value of x

$x=2(15)=30$

therefore

At first

Aziz's money was $30

Osman's money was $15

8 0

2 years ago

How do change 13 1/4 into decimal form

Bess [88]

That would be 13.25, 13+1/4
= 13+(1 divided by 4 which is 0.25)
= 13+0.25
Which is 13.25 so your answer is 13.25, good luck hope that helps :D

7 0

2 years ago

Anyone know this one ?

Vedmedyk [2.9K]

The answer is B i.e. one

4 0

3 years ago

In a bag there are 4 purple marbles, 3 green marbles, and 10 yellow marbles. If a student draws one marble what is the sample sp

guajiro [1.7K]

The correct answer Is D. Purple , Green , Yellow

Hope I helped! ( Smiles )

6 0

3 years ago