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shepuryov [24]
3 years ago
10

14. This week, Anita spent 3 1/2 h practicing the piano. She also spent 6 1/4 h at soccer practice and 4 1/3 h on the telephone.

a) How much time, in total, did Anita spend on the piano and at soccer? b) How much more time did Anita spend at soccer than on the phone?
this is fractions
Mathematics
1 answer:
bixtya [17]3 years ago
4 0
A is 9 3/4 hours. 2/4 equals a half so 1/2 +1/4 equals 3/4
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(4x+1)(3x-7) yup it hurts
musickatia [10]

Answer:

12x^2-25x-7

Step-by-step explanation:

Multiply each term by its counterpart in the parenthesis.

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The side lengths of the following right triangle 15,20 and 25, as shown below. The altitude from the right angle splits the hypo
kompoz [17]

Answer:

h = 12

x = 9

y= 16

Step-by-step explanation:

Given

The attached triangle

Required

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Let the base of the triangle be 15.

So, the area is:

A = \frac{1}{2} * 15 * 20

i.e\ height = 20

A = \frac{1}{2} * 300

A = 150

Let the base of the triangle be 25.

So, the area is:

A = \frac{1}{2}  * 25 * h

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A = \frac{1}{2}  * 25h

Substitute A = 150

\frac{1}{2}*25h = 150

Solve for h

h = \frac{150 *2}{25}

h = 6 *2

h = 12

Considering the smallest triangle

Hypotenuse = 15

So:

15^2 = h^2 + x^2

15^2 = 12^2 + x^2

This gives:

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Take square roots

9 =x

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7 0
2 years ago
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Shtirlitz [24]

Answer:

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Hope this helps, good luck! :)

5 0
3 years ago
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blondinia [14]

Answer:

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Step-by-step explanation:

Given that there are three machines. All of the machines can produce 1000 pins at a time.

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The rate of producing a faulty pin from Machine 1 be 10%, from Machine 2 be 20% andfrom Machine3 be 5%.

Machine             I                     II              III                  total

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Prob                0.3333           0.3333    0.3334             1

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Thus probability  that a produced pin will be faulty and it will be from the firstmachine

= 0.03333

6 0
2 years ago
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