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Vitek1552 [10]
3 years ago
12

I need help please!!​

Mathematics
1 answer:
yawa3891 [41]3 years ago
4 0

Answer:

cos beta = 3 /5 ............

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Tarana mailed 20 greetings cards. 9 of them were mailed to USA. What percentage of the cards were mailed to USA?
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45%

Step-by-step explanation:

9/20=0.45 (Divide it first), 45/100=45% (45/100 because 100 makes 1 whole -all 20 cards-)

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Andre has a summer job selling magazine subscriptions. He earns $25 each week plus $3 for every subscription he sells. Andre hop
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Answer: 25 + 3n

Step-by-step explanation:

Hi, the answer is lacking the last part:

<em>Write an expression for the amount of money he makes this week. </em>

So, to answer this we have to write an expression:

The fixed amount that he earns per week (25) plus the product of the amount he earns per subscription (3) and the number of subscriptions sold (n) , must be equal to his weekly earnings.

Mathematically speaking:

25 + 3n

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7 0
3 years ago
Find the mean median and mode (I NEED HELP ASAP)
Lina20 [59]

Answer:

12) mode= no mode

     mean=62

     median=81

13) mode=74

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14) mode=80

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15)mode=70

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17)mode=86

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18)mode=no mode

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8 0
2 years ago
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Todd and his brother robert are going to use 512 square feet of their backyard for skateboard ramps. the shape of the backyard i
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The dimensions are 16  ft by 32 ft

The quadratic equation is w^2-256=0

We have given that,

Todd and his brother Robert are going to use 512 square feet of their backyard for skateboard ramps. the shape of the backyard is rectangular, with the length twice as long as the width.

<h3>What is the area of the rectangle?</h3>

The area of a rectangle is equal to

A=WL

Where L is the long side of the rectangle

W is the width side of the rectangle

in this problem we have

A=512ft^2

S0,512=LW -----> equation A

L=2W ------> equation B

substitute equation B in equation A

512=2W(W)

512=2w^2

2w^2-512=0

W^2=512/2

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Find the value of L

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To learn more about rectangle visit:

brainly.com/question/25292087

#SPJ1

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