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ratelena [41]
3 years ago
10

*20 points*

Mathematics
1 answer:
raketka [301]3 years ago
6 0
◆ Straight Lines ◆

Hey !!

Check the attachment.
Hope it helps you :)

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Ms. Hartman's class is going on a field trip to the planetarium. There are 25 students in the class, and each student needs to p
Naya [18.7K]

Answer:

The last two, 250+25t and 25(10+t)

Step-by-step explanation:

4 0
3 years ago
What are the center and radius of the circle defined by the equation x^2 + y^2 -6x + 4y + 4=0
Sloan [31]

The equation of a circle:

(x-h)^2+(y-k)^2=r^2

(h, k) - a coordinates of the center

r - a radius

x^2+y^2-6x+4y+4=0\ \ \ |-4\\\\x^2-2\cdot x\cdot3+y^2+2\cdot y\cdot2=-4\ \ \ |+3^2\ |+2^2\\\\\underbrace{x^2-2\cdot x\cdot3+3^2}_{(a-b)^2=a^2-2ab+b^2}+\underbrace{y^2+2\cdot y\cdot2+2^2}_{(a+b)^2=a^2+2ab+b^2}=-4+3^2+2^2\\\\(x-3)^2+(y+2)^2=3^2

Answer:

the center: (3, -2)

the radius: 3

5 0
3 years ago
Chivis Mexican restaurant pledges 12% of any food purchased on the thrid Wednesday of each month to the cystic fibrosis foundati
Dmitrij [34]

Answer:

food purchased= $9,600

Step-by-step explanation:

Giving the following information:

Chivis Mexican restaurant pledges 12% of any food purchased

Minimum donation= $1,152

<u>To calculate the food to be purchased, we need to use the following formula:</u>

Donation= food purchased*0.12

1,152= food purchased*0.12

1,152/0.12= food purchased

food purchased= $9,600

3 0
4 years ago
The median and mean of these numbers:
aleksandr82 [10.1K]

Answer:

Mean : ≈ 12.7

Median: ≈ 13.5

Step-by-step explanation:

To find the mean you must add all the numbers and divide by the # of numbers in the set.

8+12+13+14+14+15 = 76

76/6 ≈ 12.7

To find the median you have to order the numbers from least to greatest, the middle number should be the median, but in this case two numbers are in the middle.

8, 12, 13, 14, 14, 15

So you have to add 14 and 13, which is 27.

Then divide by 2 which is ≈ 13.5

8 0
3 years ago
Another teacher decides to average the height of all 15-year-old male students in his classes throughout the day. By the end of
Tanya [424]

Answer: 0.47

Step-by-step explanation:

0.47% = 0.0047 in decimal form. Percent means 'per 57'. So, 67Inches means 0.47 per 100 or simply 0.47/100. If you divide 0.47 by 100, you'll get 0.0047 (a decimal number).

4 0
3 years ago
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