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maks197457 [2]
3 years ago
15

2.5 more than quotient of a and 4 is b

Mathematics
1 answer:
Dafna11 [192]3 years ago
6 0

answer:

a/4 + 2.5 = b

step-by-step explanation:

  • 2.5 more than would mean it is being added
  • quotient means they are being divided
  • "is" means it is after the equal sign
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Math questions!! 30 points
vampirchik [111]

Answer:

Excluded Value :  3 and  -5  

Step-by-step explanation:

hello :

Excluded Value :    and    

the excluded value when : x²+2x-15=0

( x²+2x+1)-1-15=0

means : (x+1)²-16=0       (x+1)²-4² = 0

by identity : a²-b² =(a-b)(a+b)

(x+1-4)(x+1+4) =0   so :      (x-3)(x+5) =0  means : x-3=0 or x+5=0

x=3 or x= -5

Excluded Value :  3 and -5

5 0
3 years ago
If each customer takes 3 minutes to check out, what is the probability that it will take more than 9 minutes for all the custome
AnnyKZ [126]

Using a discrete probability distribution, it is found that there is a 0.15 = 15% probability that it will take more than 9 minutes for all the customers currently in line to check out.

<h3>What is the discrete probability distribution?</h3>

Researching the problem on the internet, it is found that the distribution for the number of customers in line at the store is given by:

  • P(X = 0) = 0.2;
  • P(X = 1) = 0.15;
  • P(X = 2) = 0.30;
  • P(X = 3) = 0.20;
  • P(X = 4) = 0.10;
  • P(X = 5) = 0.05;

Hence, since each customer takes 3 minutes to check out, the probability that it will take more than 9 minutes for all the customers currently in line to check out is the probability that there are more than 3 customers, hence:

P(X > 3) = P(X = 4) + P(X = 5) = 0.10 + 0.05 = 0.15.

0.15 = 15% probability that it will take more than 9 minutes for all the customers currently in line to check out.

More can be learned about a discrete probability distribution at brainly.com/question/24855677

7 0
2 years ago
A loan worth $1000 collects simple interest each year for 6 years. At the end of that time, a total of $1270 is paid back. Deter
Korolek [52]

Answer:

The percentage rate is 4.5%

Step-by-step explanation:

The simple interest earned in this situation is $1270 - $1000, or $270.

the simple interest formula is i =prt.

Here, i = $270 = ($1000)(r)(6 yr).

                $270

Then r = ------------------- = 0.045

                $1000(6 yr)

The percentage rate is 4.5%

5 0
3 years ago
Roger is building a storage shed with wood blocks that are in the shape of cubic prisms. Can he build a shed that is twice as hi
azamat

Complete question is;

Roger is building a storage shed with wood blocks that are in the shape of cubic prisms. Can he build a shed that is twice as high as it is wide?

A. Yes. For every block of width, he could build two blocks high.

B. Yes. He could use half as many blocks for the height as the width.

C. There is no way to determine if he can do this.

D. No, it is not possible to do this

Answer:

A. Yes. For every block of width, he could build two blocks high.

Step-by-step explanation:

We are told that the wood blocks are in the shape of cubic prisms.

Now, cube shapes means that all sides are equal.

Now, if he divides the cube into 2, he can use one have to add to the top to make the height double since the sides are equal.

Thus, the height will now be twice a side of the cubic prism.

Thus, he can build a shed twice as high as its width.

6 0
3 years ago
Read 2 more answers
Terry Barlett worked from 7:00 am to 10:45 am and from 12:30 pm to 3:15 pm at a chocolate shop. Find the total hours
irakobra [83]

Answer:

6 hours 30 minutes

Step-by-step explanation:

morning work=3 hours 45 minutes

afternoon work=2 hours 45 minutes

total hours=?

Here,

3 hours 45 minutes+2 hours 45 minutes

=6 hours 30 minutes

Therefore,Terry Baelett worked 6hours 30 minutes a day.

6 0
3 years ago
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