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3 years ago

The number of 5-digit numbers that can be formed if the last digit is odd and no

Mathematics

1 answer:

Softa [21]3 years ago

7 0

Answer:

13,440

Step-by-step explanation:

10 possible digits 0 - 9

5 possible numbers for position 5 (odd digits only)

8 possible numbers for position 1 (cannot be zero or the odd number selected for position 5)

8 possible numbers remain for position 2 (10 minus 2 already selected)

7 possible numbers remain for position 3 (10 minus 3 already selected)

6 possible numbers remain for position 4 (10 minus 4 already selected)

5•8•8•7•6 = 13,440

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What is the slope of the line that contains the points (-6,1) and (4,-4)?

iragen [17]

Answer:

m = - 1/2

Step-by-step explanation:

m = -4 - 1

4 - -6

- 5/10

m = - 1/2

5 0

3 years ago

A certain type of bacteria increases continuously at a rate proportional to the number present. if there are 500 present at a gi

Dima020 [189]

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3 years ago

The ratio of boys to girls in a class is 2:3. If there are 18 girls in the class, what is the probability of a boy being in the

lukranit [14]

Answer:

0.4

Step-by-step explanation:

If the ratio of boys to girls in a class is 2:3, then

there are 2x boys;
there are 3x girls.

If there are 18 girls in the class, then

$3x=18\\ \\x=6$

Thus, there are

$2\cdot 6=12$ boys;
$3\cdot 6=18$ girls;
$12+18=30$ students in total.

The probability of a boy being in the class is

$P=\dfrac{12}{30}=\dfrac{2}{5}=0.4$

7 0

3 years ago

The owner of a stereo store wants to advertise that he has many different sound systems in stock. The store carries 6 different

Orlov [11]

Answer: 540

Step-by-step explanation:

Given : The owner of a stereo store wants to advertise that he has many different sound systems in stock.

Number of different CD players =6

Number of different receivers= 10

Number of different speakers = 9

We are assuming that a sound system consists of one of each .

Then by Fundamental principle of counting , we have

The number of different sound systems can he advertise = (Number of different CD players)x (Number of different receivers) x(Number of different speakers)

= 6 x10 x 9 =540

Hence, the number of different sound systems can he advertise =540

6 0

3 years ago

Which estimate of 7/10 x 16 uses a benchmark fraction

sashaice [31]

7/10 is 0.7
0.7 x 16 yields 11.2
11.2 is also 11 1/5
or 56/5

3 0

3 years ago