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luda_lava [24]
3 years ago
10

- 4x + 9y = 9 x - 3y = -6

Mathematics
1 answer:
egoroff_w [7]3 years ago
4 0

Answer:

it is -12

Step-by-step explanation:

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Please hlp<br> due soon<br> pls help
Mnenie [13.5K]

Answer:

732π cm^3

Step-by-step explanation:

Volume of the biggest cone

(15^2 * π *20)/3 = 1500π cm^3

Volume of the smallest cone

20^3 : 16^3= 1500π : x

x = (1500π * 4096)/8000= 768π cm^3

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3 0
3 years ago
In angle abc ,m angle A = 17 and m angle B = 100 what is the measure of angle C
Alchen [17]
Angle C equals 63
Add angle 17 plus 100 and the subtract the answer from 180. Because a triangles are always 180 degrees
8 0
3 years ago
Denise and Donna want to exchange secrets from across a crowded whispering gallery. Recall that a whispering gallery is a room w
Yuri [45]

Answer:

34 feet

Step-by-step explanation:

From the question, we are told that:

If the room is 30 feet high at the center and 90 feet wide at the floor,

Entire width of the room = 90 feet = 2a

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Height of the room = b = 30 feet

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c = √a² - b²

c = √45² - 30²

c = √1125

c = 33.541019662 feet

Approximately to the nearest whole number = 34 feet

Denise and Donna should each stand 34 ft from the outer wall so that they will be positioned at the foci of the ellipse

7 0
3 years ago
When does a sequence and series become an arithmetic sequence and arithmetic series​?
maria [59]

Answer:

An arithmetic sequence is a sequence of numbers in which the difference between the consecutive terms is constant.

4 0
2 years ago
A discounted ticket for a football game costs $12.50 less than the original price.you pay $63 for a discounted ticket
Tanya [424]

Answer:

the original price is 75.50

Step-by-step explanation:

4 0
3 years ago
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