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Korvikt [17]
3 years ago
9

of the 88 keys on a piano,52 are white a.what friction of a piano's keys are white? b.what is the ratio of black keys to white k

eys?
Mathematics
1 answer:
Basile [38]3 years ago
8 0

Answer:

52/88 or simplifed 13/22 and the ratio is 52:36

Step-by-step explanation:

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5 is what percent of 23
Eddi Din [679]
5 = what percent of 23

5 = x% of 23

5 = (x/100)*23

5 = 23x/100

5*100 = 23x

23x = 5*100

x = 5*100/23

x = 21.739

5 is ≈ 21.739% of 23 
8 0
3 years ago
What is the equation in point-slope form of the line that passes through the point (3, −2) and has a slope of 23 ?
Oksanka [162]
Use the point slope formula. then, substitute the values inside the formula.

x1 =3
y1= -2
m = 23

y -y1 = m ( x - x1)

y - (-2) = 23 (x - 3)

y + 2 = 23 ( x - 3)

3 0
3 years ago
The product of two mixed numbers that are each between 4 and 5 is between 16 and 25
nalin [4]
4.5x5=22.5

not sure if this is right, but hope it helps

6 0
4 years ago
Emery bought 3 cans of beans that had a total weight of 2.4 pounds. If each can of beans weighed the same amount, which model co
andreev551 [17]

Answer:

  • y=0.8x
  • See Explanation for others

Step-by-step explanation:

The 3 cans of beans had a total weight of 2.4 Pounds

Therefore:

  • 1 can of beans = (2.4 ÷ 3) =0.8 Pounds

The following applies from the options.

  • y=0.8x where y is the weight and x is the number of cans.
  • A 2-column table with 3 rows. Column 1 is labeled number of cans with entries 5, 15, 20. Column 2 is labeled total weight (in pounds) with entries 4, 12, 16.

Using y=0.8x

When x=5, y=0.8 X 5=4

When x=15, y=0.8 X 15=12

When x=20, y=0.8 X 20=16

\left|\begin{array}{c|c}\text{Number of Cans,x}&\text{Total Weight (in Pounds),y}\\-------&--------\\5&4\\15&12\\20&16\end{array}\right|

  • On a coordinate plane, the x-axis is labeled number of cans and the y-axis is labeled total weight (in pounds. A line goes through points (5, 4) and (15, 12). This can be clearly seen from the table above as (5,4) and (15,12) are points on the line.
8 0
3 years ago
Read 2 more answers
help please !!!Kevin wants to make a mixture that is 50% lemon juice and 50% lime juice. How much 100% lemon juice should he add
Liula [17]
So basically, he wants to make mixture where lemon=lime

it is 6 gallons so
40% of 6=0.4 times 60=2.4=lemon
60% of 6=0.6 times 60=3.6=lime
so to make them equal
3.6-2.4=1.2
he must add 1.2 gallons of 100% lemon juice to make a mixture of 50% lemon and 50% lime

1.2 gallons is the answer
8 0
3 years ago
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