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3 years ago

credit cards place a 3 digit security code on the back of cards what is the probability that a code starts with a number 7

1 answer:

8 0

This answer is not 3/4. The answer is 1/10. I found this by knowing that there are 10 numbers and there is a 1/10 chance that it will start with 7. I would really appreciate it if I could get brainliest. Thanks!! =D

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What method would i use to solve this?

AysviL [449]

I think it’s 3 at least from my knowledge

4 0

3 years ago

7 squared by 2 +3(4 squared by 2 +3+2)

VLD [36.1K]

Answer:

The answer of the given expression is $\frac{127}{2}$ .

Step-by-step explanation:

Given $\frac{7^2}{2}+3(\frac{4^2}{2}+3+2)$ .

Step 1 : Firstly we have to solve for brackets, adding the fraction with digits. For this we have to multiply 3 and 2 by 2 by 2 which gives the same denominator.

$\frac{4^2}{2}+3+2=\frac{16}{2}+3+2\\\frac{16}{2}+\frac{3\times2}{2}+\frac{2\times2}{2}= \frac{16}{2}+\frac{6}{2}+\frac{4}{2}=\frac{26}{2}$

Step 2 : Fraction under the brackets is solved now we have to multiply the result with 3 to remove the brackets.

$\frac{26}{2}\times3=\frac{78}{2}$

Step 3 : Now we have an expression with same denominator, here simply add and we get the result.

$\frac{7^2}{2}+\frac{78}{2}=\frac{49}{2}+\frac{78}{2}=\frac{127}{2}$

Hence the solution for given expression is $\frac{127}{2}$ .

3 0

3 years ago

Select the correct answer.

balu736 [363]

Answer:

d. 11

> Step-by-step explanation:

7 0

4 years ago

Find the area of a room 9/7 m and 2/7 m <br><br><br> ;-; help

11111nata11111 [884]

Answer:

I can help you in comments so I can explain this to you

4 0

3 years ago

Solve for v:<br> -5.5 = 7.3 + v/8

Romashka [77]

-5.5=7.3+v/8

convert decimals to fractions

-11/2=73/10+v/8

multiply both sides by 40

-220=292+5v

move terms

-5v=292+220

add the numbers

-5v=512

divide both sides by -5

v=512/5

answer

3 0

3 years ago