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Maksim231197 [3]
2 years ago
13

HELPPP!!!!!! URGENT!!!​

Mathematics
1 answer:
Burka [1]2 years ago
6 0

Answer:

20

Step-by-step explanation:

x = price

y = number of keyboard

xy = 540

(x-2)(y+3) = 540

x = 540/y

==> x = 20

==> y = 27

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Write this ratio as a fraction in the simplest form 3 feet to 63 inches
Lana71 [14]

Answer: The answer is 1/21

Step-by-step explanation:

7 0
3 years ago
a survey asked 72 randomly chosen students if they were going to attend the school play. twelve said yes. if there are 210 ticke
Ugo [173]
We can solve this by setting up a proportion:

12 seeing the play/ 72 students = 210 seeing the play/ x students

We can cross multiply to solve for x:

(12)x=(72)(210)
12x=15,120
x=1,260 students who attend the school
4 0
3 years ago
How many solutions exist for the given equation?
sladkih [1.3K]

Answer:

Infinitely many

Step-by-step explanation:

12x + 1 = 3(4x + 1) - 2

12x + 1 = 12x + 3 - 2

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8 0
3 years ago
Read 2 more answers
I need help and i need it fast TIME DUE 4 MIN
Phoenix [80]

Answer:

18

Step-by-step explanation:

multyply both like 10 x 6 then 11 x 7 after that subtrac the numbers that you múltiple and you will get the answer

8 0
3 years ago
An online store receives customer satisfaction ratings between 000 and 100100100, inclusive. In the first 101010 ratings the sto
Monica [59]

Complete question is;

An online store receives customer satisfaction ratings between 0 and 100, inclusive. In the first 10 ratings the store received, the average (arithmetic mean) of the ratings was 75. What is the least value the store can receive for the 11th rating and still be able to have an average of at least 85 for the first 20 ratings?

Answer:

50

Step-by-step explanation:

We are told that In the first 10 ratings the store received arithmetic mean of the ratings = 75.

Thus;

Sum of the first 10 ratings = 75 × 10 = 750

Now, for the mean of the first 20 ratings to be at least 85, it means that the sum of the first 20 ratings would be; 85 × 20 = 1700

Thus, the sum of the next 10 ratings would be; 1700 − 750 = 950.

If maximum rating = 100, then the maximum possible value of the sum of the 12th to 20th ratings is given by;

9 × 100 = 900.

Now, in order to make the store have an average of at least 85 for the first 20 ratings, the least value for the 11th rating is;

950 − 900 = 50

7 0
3 years ago
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