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Neporo4naja [7]
3 years ago
8

Jeremiah practice playing the piano a total of three hours 45 minutes after five weeks if he practiced the same amount of time e

ach week how many minutes did he practice during the Fifth week
Mathematics
1 answer:
EleoNora [17]3 years ago
6 0

Answer:

3/4 hours or 45 minutes

Step-by-step explanation:

3 hours and 45 minutes is equivalent to 3 3/4 hours

We divide 3 3/4 by 5 (the number of weeks) to receive how much Jeremiah practices per week

We convert 3 3/4 to an improper fraction and receive 15/4

We now have 15/4 ÷ 5 =

Convert 5 into a fraction

5/1

15/4 ÷ 5/1 =

Keep, change, flip

We keep our first fraction

15/4 ÷ 5/1 =

Change our sign from division to multiplication

15/4 • 5/1 =

And flip or find the reciprocal of the second fraction

15/4 • 1/5 =

Then we multiply our numerators together and our denominators together

15/4 • 1/5 = 15/20

Then we simplify our fraction by dividing the numerator and denominator by the largest common factor, 5

15/5= 3

20/5= 4

And we receive our answer: 3/4 hours

Jeremiah practiced 3/4 hours or 45 minutes on the 5th week.

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Andrew is 61 years. Erica is 31 years old. how many years ago was Andrew’s age 4 times Erica’s age
kozerog [31]

Answer:

21 Years Ago

Step-by-step explanation:

61 - 21 = 40

31 - 21 = 10

40/10 = 4

4 0
3 years ago
A person runs 1 4/5 miles in 1/5 of an hour determine how many miles they are running per hour
asambeis [7]
Multiply 1 4/5 by 5
9/5 * 5/1 = 45/5 = 9 miles
8 0
2 years ago
Read 2 more answers
If a seed is planted, it has a 75% chance of growing into a healthy plant.
Arlecino [84]

Answer:

It is binomial:

p= 0.75 = 75%

1-p = 0.25 = 25%

N = 10

k=7

"seven successes in 10 trials"

(10 choose 7) (0.75)^7 ( 0.25)^3 =

(10*9*8 / 3*2) * (0.75)^7 ( 0.25)^3 =

(5*3*8) (0.75)^7 ( 0.25)^3

120 (0.75)^7 ( 0.25)^3  

= 0.25028228759765625

or just over 25%

Step-by-step explanation:

5 0
2 years ago
The legs of a right triangle are 12 cm and 16 cm. What is the length of the hypotenuse? 15 cm 17 cm 20 cm 28 cm
GalinKa [24]
Answer: 20 cm

To solve this, use the Pythagorean Theorem, a² + b² = c², where a and b are the legs of the right triangle, and c is the hypotenuse of the right triangle.
**The Pythagorean Theorem only works for right triangles.**

Substitute in the values.
a² +  b² = c²
12² + 16² = c²

Solve for c, the hypotenuse.
12² + 16² = c²               
144 + 256 = c²
400 = c²
c = √400
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7 0
3 years ago
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Write an equation in standard form of a line that passes through (4, 2) and is parallel to y = - 3/4 * x - 5 .
Bingel [31]

Answer:

y=2x+y-int

Step-by-step explanation:

If the line is parallet to the defined by the given equation the slope of the unknown line is m=2.

Use this value of slope to calculate the y intercept. 2  = ( 2 - y-int)/4 - 0)

THus, your equation is y = 2x + y-int

5 0
2 years ago
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