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Mariana [72]
3 years ago
12

The access code for a cars security system consists of 4 digits. The first digit cannot

Mathematics
1 answer:
Juliette [100K]3 years ago
4 0

Answer:

4500

Step-by-step explanation:

The first digit can't be 0. so it will be a number from 1000 to 9999. That's a total of 9000 numbers (9999-1000+1=9000). Since the last digit must be an even number that is one half of the 9000 numbers which is 4500.

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What is the value of the expression<br> (33 +53)<br> ?<br> 42<br> Answer:<br> Submit Answer
Sati [7]

Answer:

5

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Given that DE is the length of the mid-segment. What is the length of BC?
Fittoniya [83]
I beleive the answer is 16
7 0
4 years ago
Megan paints her locker red, white, and blue.
Dima020 [189]

Answer:

red: 9/20, 0.45, 45%

White: 15%, 0.15, 3/20

Blue: 0.4, 2/5, 40%

Step-by-step explanation:

For red: you start with 9/20. It’s best to get to a denominator of 10. So divide each number by 2. You would get 4.5/10. Then change to a percent by moving the decimal of the numerator one to the right and changing it to percent. 4.5 -> 45. -> 45%. Then for the decimal, divide 45 by 100. 45/100 = 0.45.

For white: you start with 15%. Divide by 100. 15/100=0.15. Put into a fraction with a denominator of 100. It would be 15/100. Simplify. Each number can be divided by 5, so your fraction would be 3/20.

For blue: you start with 0.4. Turn this into a fraction. Since there is one decimal place, it can have a denominator of 10. The fraction is 4/10, simplified to 2/5. Using the fraction 4/10, the percent would be 40%.

I hope this helps!

7 0
3 years ago
Jillian is at her favorite clothing store and has found a pair of pants that are on sale for 20% off the regular price. They are
Damm [24]

Answer: $5,60 will be taken off the price

Step-by-step explanation:

Take off = regular price·20/100  

Take off = $28·20/100 = $560/100 = $5,60  

Price after discount = $28 - $5.60 = $22.4

Answer: $5,60 will be taken off the price

<h2><em>Spymore</em></h2>
3 0
4 years ago
Coffee café mix 90 pounds of coffee that cost six dollars per pound the types of coffee used to make this makes you cost seven d
Troyanec [42]

Answer:

y =  60

Step-by-step explanation:

From the  information we get:

x  quantity of 4 dollars  coffee used in the mix

y  quantity of 7 dollars  coffee used in the mix

For the quantity of coffee to be sold a 7 $/pound  ( 90 pounds)

Then  6*90  =  540  $

Therefore

x  +  y  =  90     and

4*x  +  7*y  =  540

A two equations system we solve for x and y

y =  90  -  x

4*x  +  7* ( 90  -  x ) = 540

4*x  +  630 - 7*x  =  540

- 3*x  =  - 90

x = 30 pounds   and

y  =  90  -  30

y  =  60

We should use  60 pounds of the seven $ coffee

4 0
3 years ago
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