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2 years ago

I need help please thanks ....

Mathematics

1 answer:

solniwko [45]2 years ago

3 0

Answer:

Area = 119.2415 cm^2

Step-by-step explanation:

This is a cone on its head.

The total surface area can be calculated using the formula for the area of a cone.

Mathematically,

The Area A = 2πr(r + l)

where r = radius of the circular base which is 1/2 * D.

D is the diameter given as 3.5

so r = 3.5/2 = 1.75 cm

l = slant height = 9.1 cm

and π = 3.14

Plugging these values into the equation of A, we have;

A = (2 * 3.14 * 1.75)(1.75 + 9.1)

A = 10.99(10.85)

A = 119.2415 cm^2

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Kayden and Carter go to the movie theater and purchase refreshments for their friends.

r-ruslan [8.4K]

Answer:

3x + 6y = 64.50________equation 1

9x + 8y = 106.00_______equation 2

Price of a bag of popcorn is $3(300 cents) WHILE the price of one drink is $8.75(875 cents)

Step-by-step explanation:

The question here says that Kayden and Carter go to the movie theater and purchase refreshments for their friends.

Kayden spends a total of $64.50 on 3 bags of popcorn and 6 drinks.

Carter spends a total of $106.00 on 9 bags of popcorn and 8 drinks.

Now let's assume that the price of each bag of popcorn is X and the price of one drink as Y

It means that

3x + 6y = 64.50________equation 1

9x + 8y = 106.00_______equation 2

Make "x" the subject of the formula in equation 1

3x = 64.50 - 6y

X = (64.50 - 6y)/3

Apply the above in equation 2 and we have

9[ (64.50 - 6y)/3] + 8y = 106

9(21.5 - 2y) +8y = 106

193.5 - 18y + 8y = 106

193.5 - 10y = 106

Y= (193.5 - 106)/10

Y= $8.75 (price of one drink)

Now substitute Y = 8.75 in equation 1

3x + 6y = 64.50

3x + 6(8.75) = 64.50

3X = 64.50 - 52.5

X = 12/3

X = 3

8 0

3 years ago

Read 2 more answers

How did brianly choose the best answer

ladessa [460]

Answer:

➢ Unfortunately, Brainly appears more to be a place to get quick answers so that students can finish homework faster. The answers, even if they're correct, often offer little to no elaboration or depth on the topic, and there's no guarantee that given answers will be correct.

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